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SD - Anesthesia Secrets E-Book

SD - Anesthesia Secrets E-Book

James Duke | Brian M Keech

(2010)

Additional Information

Book Details

Abstract

Anesthesia Secrets, 4th Edition by James Duke, MD has the quick answers you need for practice and review. It uses the popular question-and-answer format of the Secrets Series® to make essential guidance easy to reference and study. A list of the Top 100 Secrets in anesthesiology lets you review the most frequently encountered board review questions at a glance; and an informal tone, user-friendly format, and pocket size make the book both convenient and portable.

    • A section on the Top 100 Secrets in anesthesiology provides you with a high-yield overview of essential material for study or self assessment.
    • A question-and-answer format, Key Points boxes, bulleted lists, mnemonics, and a two-color page layout make information remarkably easy to reference and review.
    • Practical tips from the authors provide valuable insights into best practices.
    • The book's portable size lets you carry it comfortably in your lab coat pocket.
    • Thorough updates throughout equip you with the most up-to-date information on all areas of anesthesia, including the most current standards of care.

Table of Contents

Section Title Page Action Price
Front Cover\r Cover
Anesthesia Secrets\r iii
Copyright Page\r iv
Dedication v
Contents vii
Contributors xiii
Preface xvii
Top 100 Secrets 1
Section I: Basics of Patient Management\r 9
Chapter 1: Autonomic Nervous System\r 9
1. Describe the autonomic nervous system.\r 9
2. Review the anatomy of the sympathetic nervous system\r 10
3. Elaborate on the location and names of the sympathetic ganglia. Practically speaking, what is the importance of knowing the name and location of theseganglia?\r 10
4. Describe the postganglionic adrenergic receptors of the sympathetic nervous system and the effects of stimulating these receptors.\r 11
5. Review the anatomy and function of the parasympathetic nervous system.\r 11
6. What are catecholamines? Which catecholamines occur naturally? Which are synthetic?\r 11
7. Review the synthesis of dopamine, norepinephrine, and epinephrine.\r 11
8. How is norepinephrine metabolized?\r 12
9. Describe the synthesis and degradation of acetylcholine.\r 12
10. What are sympathomimetics?\r 12
11. Review the sympathomimetics commonly used in the perioperative environment.\r 12
12. Discuss the effects of phenylephrine and review common doses of this medication.\r 14
13. Discuss the effects of ephedrine and review common doses of this medication. Give some examples of medications that contraindicate the use of ephedrineand why.\r 14
14. What are the indications for using β-adrenergic antagonists?\r 14
15. Review the mechanism of action for β1-antagonists and side effects.\r 14
16. Review the effects of β2-antagonism.\r 14
17. How might complications of β-blockade be treated intraoperatively?\r 15
18. Describe the pharmacology of α-adrenergic antagonists.\r 15
19. Review α2-agonists and their role in anesthesia.\r 15
20. Discuss muscarinic antagonists and their properties.\r 15
21. What is the significance of autonomic dysfunction? How might you tell if a patient has autonomic dysfunction?\r 15
22. What is a pheochromocytoma, and what are its associated symptoms? How is pheochromocytoma diagnosed?\r 15
23. Review the preanesthetic and intraoperative management of pheochromocytoma patients.\r 16
Suggested Reading\r 16
Chapter 2: Respiratory and Pulmonary Physiology\r 17
1. What is the functional residual capacity? What factors affect it?\r 17
2. What is closing capacity? What factors affect the closing capacity? What is the relationship between closing capacity and functional residual capacity?\r 17
3. What muscles are responsible for inspiration and expiration?\r 17
4. What is the physiologic work of breathing?\r 17
5. Discuss the factors that affect the resistance to gas flow. What is laminar and turbulent gas flow?\r 18
6. Suppose a patient has an indwelling 7-mm endotracheal tube and cannot be weaned because of the increased work of breathing. What would be of greaterbenefit, cutting off 4 cm of endotracheal tube or replacing the tube with one ofgreater internal diamete\r 18
7. Why might helium be of benefit to a stridorous patient?\r 18
8. Discuss dynamic and static compliance.\r 18
9. How does surface tension affect the forces in the small airways and alveoli?\r 18
10. Review the different zones (of West) in the lung with regard to perfusion and ventilation.\r 19
11. What are the alveolar gas equation and the normal alveolar pressure at sea level on room air?\r 19
12. What is the A-a gradient and what is a normal value for this gradient?\r 19
13. What is the practical significance of estimating A-a gradient?\r 19
14. What are the causes of hypoxemia?\r 19
15. What are the A-a gradients for the different causes of hypoxemia:\r 20
16. Discuss V/Q mismatch. How can general anesthesia worsen V/Q mismatch?\r 20
17. Define anatomic, alveolar, and physiologic dead space.\r 21
18. How is Vd/Vt calculated?\r 21
19. Define absolute shunt. How is the shunt fraction calculated?\r 21
20. What is hypoxic pulmonary vasoconstriction?\r 21
21. Calculate arterial and venous oxygen content (CaO2 and CvO2).\r 21
22. How is CO2 transported in the blood?\r 21
23. How is PCO2 related to alveolar ventilation?\r 22
24. What factors alter oxygen consumption?\r 22
25. Where is the respiration center located in the brain?\r 22
26. How do carbon dioxide and oxygen act to stimulate and repress breathing?\r 22
27. What are the causes of hypercarbia?\r 22
28. What are the signs and symptoms of hypercarbia?\r 23
Suggested Readings\r 23
Chapter 3: Blood Gas and Acid-Base Analysis\r 24
1. What are the normal arterial blood gas values in a healthy patient breathing room air at sea level?\r 24
2. What information does arterial blood gas provide about the patient? 24
3. How is the regulation of acid-base balance traditionally described? 24
4. What is the physiochemical approach (Stewart model) for the analysis of acid-base balance? 25
5. What are the common acid-base disorders and their compensation? 25
6. How do you calculate the degree of compensation? 26
7. What are the common causes of respiratory acid-base disorders? 26
8. What are the major buffering systems of the body? 26
9. What organs play a major role in acid-base balance? 26
10. What is meant by pH? 27
11. Why is pH important? 27
12. List the major consequences of acidemia. 27
13. List the major consequences of alkalemia. 27
14. Is the HCO3 value on the arterial blood gas the same as the CO2 value on the chemistry panel? 28
15. What is the base deficit? How is it determined? 28
16. What is the anion gap? 28
17. List the common causes of a metabolic alkalosis. 29
18. List the common causes of elevated and nonelevated anion gap metabolic acidosis. 29
19. Describe a stepwise approach to acid-base interpretation. 29
Suggested Readings\r 30
Chapter 4: Fluids, Volume Regulation, and Volume Disturbances\r 31
1. Describe the functionally distinct compartments of body water, using a 70-kg patient for illustration.\r 31
2. Describe the dynamics of fluid distribution between the intravascular and interstitial compartments.\r 31
3. How are body water and tonicity regulated?\r 31
4. Discuss the synthesis of antidiuretic hormone.\r 32
5. List conditions that stimulate and inhibit release of antidiuretic hormone.\r 32
6. What is diabetes insipidus?\r 32
7. List causes of diabetes insipidus.\r 33
8. Discuss alternative treatments for diabetes insipidus.\r 33
9. Define the syndrome of inappropriate antidiuretic hormone release. What is the primary therapy?\r 34
10. What disorders are associated with SIADH?\r 34
11. What is aldosterone? What stimulates its release? What are its actions?\r 34
12. Discuss issues associated with estimating volume status in outpatients.\r 34
13. Discuss estimating volume status in acutely ill patients.\r 34
14. Are there distinct advantages to using colloids to resuscitate a patient?\r 34
15. Review the composition of crystalloid solutions.\r 35
16. Review the colloidal solutions that are available.\r 35
17. What is the normal range for serum osmolality?\r 36
18. What situations might be appropriate for the use of hypertonic saline?\r 36
19. How do you estimate fluid loss during a surgical procedure?\r 36
20. What is meant by third-space losses? What are the effects of such losses?\r 36
21. How much fluid is appropriate to administer during a surgical procedure?\r 37
22. Is blood pressure a good sign of hypovolemia?\r 37
23. What clinical findings support a diagnosis of hypervolemia?\r 37
Suggested Readings\r 37
Chapter 5: Electrolytes\r 38
1. What is a normal sodium concentration? What degree of hyponatremia is acceptable to continue with a planned elective procedure?\r 38
2. How is hyponatremia classified? 38
3. How should acute hyponatremia be treated? 38
4. Is there a subset of patients who may tend to have residual neurologic sequelae from a hyponatremic episode?\r 39
5. What may cause acute hyponatremia in the operating room?\r 39
6. Discuss hypernatremia and its causes. 39
7. What problems does hypernatremia pose for the anesthesiologist? 39
8. Review hypokalemia and its causes. 39
9. What are the risks of hypokalemia? 40
10. A patient takes diuretics and is found to have a potassium level of 3 mEq/L. Why not give the patient enough potassium to restore the serum level to normal?\r 40
11. If potassium is administered, how much should be administered and how fast should it be administered? 40
12. Define hyperkalemia and review its symptoms. 40
13. What are some causes of hyperkalemia? 40
14. Describe the patterns of hyperkalemia observed after the administration of succinylcholine. 41
15. A patient with chronic renal failure requires an arteriovenous fistula for hemodialysis. Potassium is measured as 7 mEq/L. What are the risks of generalanesthesia?\r 41
16. How is hyperkalemia treated? 41
17. What are the major causes and manifestations of hypocalcemia? 41
18. How is hypocalcemia treated? 42
19. Does hypomagnesemia pose a problem for the anesthesiologist? 42
20. Hyperchloremia has been increasingly recognized after administration of what standard resuscitation fluid?\r 42
Suggested Reading 42
Chapter 6: Transfusion Therapy\r 43
1. How would knowledge of oxygen delivery impact the decision to transfuse?\r 43
2. At what point is DO2crit reached? What are our surrogate measures for DO2crit?\r 43
3. What are the physiologic adaptations to acute normovolemic anemia?\r 43
4. Historically, a hemoglobin level of 10 g/dl (hematocrit of 30) was used as a transfusion trigger. Why is this is no longer an accepted Practice?\r 44
5. What are the risks of transfusion?\r 44
6. What infectious diseases can be contracted from a transfusion and how significant is that risk?\r 44
7. Review the major transfusion-related reactions.\r 44
8. What are the current standards for the length of storage of blood? What is a blood storage lesion?\r 46
9. Is there convincing evidence that the effect of a transfusion on immune function is harmful?\r 46
10. Review the features of transfusion-related acute lung injury.\r 46
11. What conditions may predispose a patient to transfusion-related acute lung injury?\r 47
12. Discuss the criteria for diagnosis of transfusion-related acute lung injury.\r 47
13. What treatments are available for transfusion-related acute lung injury?\r 47
14. Review the ABO and Rh blood genotypes and the associated antibody patterns.\r 47
15. What is the difference between a type and screen and a crossmatch?\r 48
16. What type of blood should be used in an emergency situation?\r 48
17. What are some of the complications of massive blood transfusion?\r 48
18. If suspected, how should a major transfusion reaction be managed?\r 49
19. What alternatives are there to transfusion of donor blood?\r 49
20. What are the limitations, advantages, and disadvantages of alternative hemoglobin solutions?\r 49
Suggested Readings 50
Chapter 7: Coagulation\r 51
1. How can you identify a patient at risk for bleeding?\r 51
2. What processes form the normal hemostatic mechanism?\r 51
3. Describe primary hemostasis.\r 51
4. Review secondary hemostasis.\r 51
5. What are the intrinsic and extrinsic coagulation pathways?\r 51
6. Explain fibrinolysis.\r 52
7. Why doesn't blood coagulate in normal tissues?\r 52
8. What is an acceptable preoperative platelet count?\r 53
9. List the causes of platelet abnormalities.\r 53
10. How does aspirin act as an anticoagulant?\r 53
11. Review the properties of factor VIII.\r 53
12. How does vitamin K deficiency affect coagulation?\r 54
13. How does heparin act as an anticoagulant?\r 54
14. Give a general description of the different coagulation tests.\r 54
15. What does the partial thromboplastin time measure?\r 54
16. Describe the activated partial thromboplastin time.\r 54
17. How is the activated clotting time measured?\r 55
18. What is the prothrombin time?\r 55
19. Explain the international normalized ratio.\r 55
20. What are the indications for administering fresh frozen plasma?\r 55
21. What is cryoprecipitate? When should it be administered?\r 55
22. What is disseminated intravascular coagulation?\r 55
23. What tests are used for the diagnosis of disseminated intravascular coagulation?\r 55
24. Describe the treatment of disseminated intravascular coagulation\r 56
25. What is recombinant factor VIIa (NovoSeven)?\r 56
26. Discuss the basic principles of thrombelastography.\r 56
27. Discuss the parameters measured by thromboelastography.\r 57
Suggested Readings 57
Chapter 8: Airway Management\r 58
1. List several indications for endotracheal intubation. 58
2. Review objective measures suggesting the need to perform endotracheal intubation. 58
3. What historical information might be useful in assessing a patient's airway? 58
4. Describe the physical examination of the oral cavity. 58
5. Review the Mallampati classification. 59
6. What is the next step after examination of the oral cavity? 59
7. Describe the examination of the neck. 59
8. Discuss the anatomy of the larynx. 60
9. Describe the innervation and blood supply to the larynx. 60
10. Summarize the various instruments available to facilitate oxygenation. 60
11. What are the benefits of oral and nasal airways? 61
12. How are laryngoscopes used? 61
13. What structures must be aligned to accomplish visualization of the larynx? 61
14. What is a GlideScope? 61
15. What endotracheal tubes are available? 61
16. What are laryngeal mask airways? 63
17. What other airway management devices are available? 63
18. Describe the indications for an awake intubation. 63
19. How is the patient prepared for awake intubation? 63
20. How is awake intubation performed? 63
21. What nerve blocks are useful when awake intubation is planned? 64
22. What are predictors of difficult mask ventilation? Why is this important? 64
23. The patient has been anesthetized and paralyzed, but the airway is difficult to intubate. Is there an organized approach to handling this problem?\r 65
24. Describe the technique of transtracheal ventilation and its limitations. 65
25. What are criteria for extubation? 65
26. What is rapid-sequence induction? Which patients are best managed in this fashion? 65
27. How is RSI performed? 66
28. What is the purpose of preoxygenation before the induction of anesthesia? 67
29. Anesthesiologists routinely deliver 100% oxygen for a few minutes before extubation. What is the logic behind this action and why might an FiO2 of 80%be better?\r 67
Suggested Readings 67
Chapter 9: Pulmonary Function Testing\r 68
1. What are pulmonary function tests and how are they used? 68
2. What is the benefit of obtaining pulmonary function tests? 68
3. Besides abnormal pulmonary function tests, what are recognized risk factors for postoperative pulmonary complications?\r 68
4. What factors should be taken into consideration when interpreting pulmonary function tests? 68
5. Describe standard lung volumes. 68
6. What are the lung capacities? 68
7. What techniques are used to determine functional residual capacity? 69
8. What information is obtained from spirometry? 69
9. What is the diffusing capacity for the single-breath diffusion capacity (DLCO)? 69
10. What disease states cause a decrease in DLCO? 69
11. What disease states cause an increase in DLCO? 70
12. Review obstructive airway diseases and their pulmonary function test abnormalities. 70
13. Review restrictive lung disorders and their associated pulmonary function test abnormalities. 70
14. What is a flow-volume loop and what information does it provide? 71
15. What are the characteristic patterns of the flow-volume loop in a fixed airway obstruction, variable extrathoracic obstruction, and intrathoracic obstruction?\r 71
16. What is the value of measuring flow-volume loops in a patient with an anterior mediastinal mass? 71
17. What are the effects of surgery and anesthesia on pulmonary function? 73
18. What pulmonary function test values predict increased perioperative pulmonary complications after abdominal or thoracic surgery?\r 73
19. Are there absolute values of specific pulmonary function tests below which the risk of surgery is prohibitive?\r 74
Suggested Reading 74
Section II: Pharmacology\r 75
Chapter 10: Volatile Anesthetics\r 75
1. What are the properties of an ideal anesthetic gas?\r 75
2. What are the chemical structures of the more common anesthetic gases? Why do we no longer use the older ones?\r 75
3. How are the potencies of anesthetic gases compared?\r 75
4. What factors may influence MAC?\r 76
5. Define partition coefficient. Which partition coefficients are important?\r 76
6. Review the evolution in hypothesis as to how volatile anesthetics work.\r 76
7. What factors influence speed of induction?\r 77
8. What is the second gas effect? Explain diffusion hypoxia.\r 77
9. Should nitrous oxide be administered to patients with pneumothorax? Are there other conditions in which nitrous oxide should be avoided?\r 78
10. Describe the ventilatory effects of the volatile anesthetics.\r 78
11. What effects do volatile anesthetics have on hypoxic pulmonary vasoconstriction, airway caliber, and mucociliary function?\r 78
12. What effects do volatile anesthetics have on circulation?\r 79
13. Which anesthetic agent is most associated with cardiac dysrhythmias?\r 79
14. Discuss the biotransformation of volatile anesthetics and the toxicity of metabolic products.\r 79
15. Review the effects of CO2 absorbants on volatile anesthetic by-products.\r 80
16. Which anesthetic agent has been shown to be teratogenic in animals? Is nitrous oxide toxic to humans?\r 81
Suggested Readings 81
Chapter 11: Opioids\r 82
1. What is an opiate? An opioid? A narcotic? 82
2. What are endogenous opioids? 82
3. Differentiate opioid tolerance, dependence, and abuse. 82
4. Name the opioids commonly used in the perioperative setting, their trade names, equivalent morphine doses, half-lives, and chemical classes.\r 82
5. Describe the various opioid receptors and their effects. 82
6. What is an opioid agonist-antagonist? 82
7. Explain the mechanism of action, duration, and side effects of the opioid antagonist naloxone. 82
8. Describe the various routes of administration of opioids. 83
9. What are the typical side effects of opioids? 83
10. Which opioids are associated with histamine release? 84
11. Describe the mechanism of opioid-induced nausea. 84
12. What is methylnaltrexone and what potential role does it have in opioid therapy? 84
13. Describe the cardiovascular effects of opioids. 85
14. Describe the typical respiratory pattern and ventilatory response to carbon dioxide in the presence of opioids.\r 85
15. Describe the analgesic onset, peak effect, and duration of intravenous fentanyl, morphine, and hydromorphone.\r 85
16. Explain how fentanyl can have a shorter duration of action but a longer elimination half-life than morphine.\r 85
17. Explain the concept of context-sensitive half-time and its relevance to opioids. 86
18. Explain why morphine may cause prolonged ventilatory depression in patients with renal failure. 86
19. Which opioids may be associated with seizure activity in patients with renal failure? 86
20. What is remifentanil and how does it differ from other opioids? 87
21. Describe the metabolism of codeine. 87
22. What are some particular concerns with methadone dosing? 87
23. What is tramadol? 88
24. What are some of the unique characteristics of meperidine? 88
25. Describe the site and mechanism of action of neuraxial opioids. 88
26. Discuss the effect of lipid solubility on neuraxial opioid action. 88
27. Are opioid receptors exclusively in the central nervous system? 88
28. Describe the advantages of combining local anesthetics and opioids in neuraxial analgesia. 88
29. What is DepoDur and how is it different from other neuraxial opioids? 88
Suggested Readings 89
Chapter 12: Intravenous Anesthetics And Benzodiazepines\r 90
1. What qualities would the ideal intravenous induction agent possess? 90
2. List the commonly used induction agents and their properties. Compare their cardiovascular effects. 90
3. Instead of injecting pentothal intravenously, you have inadvertently administered it into the patient's intra-arterial line. What is the impact on thepatient and how should potential problems be addressed?\r 90
4. What are contraindications to STP use? 90
5. How do induction agents affect respiratory drive? 91
6. How does ketamine differ from other induction agents? 92
7. Discuss the concerns for the use of etomidate in the critically ill patient. 92
8. Describe propofol infusion syndrome. 92
9. What are some contraindications to the use of propofol? 93
10. What would be an appropriate induction agent for a 47-year-old healthy male with a parietal lobe tumor scheduled for craniotomy and tumor excision?\r 93
11. Describe the mechanism of action of benzodiazepines. 93
12. What benzodiazepines are commonly administered intravenously? 93
13. How should oversedation induced by benzodiazepines be managed? 93
14. What do you tell the nurses who will monitor this patient about possible side effects of flumazenil? 94
Suggested Readings 94
Chapter 13: Muscle Relaxants and Monitoring of Relaxant Activity\r 95
1. Describe the anatomy of the neuromuscular junction.\r 95
2. What is the structure of the acetylcholine receptor?\r 95
3. With regard to neuromuscular transmission, list all locations for acetylcholine receptors.\r 96
4. Review the steps involved in normal neuromuscular transmission.\r 96
5. What are the benefits and risks of using muscle relaxants?\r 96
6. How are muscle relaxants classified?\r 96
7. What are the indications for using succinylcholine?\r 96
8. If succinylcholine works so rapidly and predictably, why not use it all the time?\r 97
9. How do mature and immature acetylcholine receptors differ?\r 97
10. Differentiate between qualitative and quantitative deficiencies in pseudocholinesterase.\r 97
11. Review the properties of nondepolarizing muscle relaxants.\r 98
12. Review the metabolism of nondepolarizing neuromuscular blockers.\r 98
13. Describe common side effects of nondepolarizing neuromuscular blockers.\r 99
14. Review medications that potentiate the actions of muscle relaxants.\r 99
15. What clinical conditions potentiate the actions of neuromuscular blockers?\r 99
16. Discuss important characteristics of a nerve stimulator.\r 99
17. List the different patterns of stimulation.\r 99
18. Which is the simplest mode of stimulation?\r 99
19. Which mode is most commonly used to assess degree of blockade? How is it done?\r 100
20. What is tetanic stimulation?\r 100
21. Explain posttetanic facilitation and posttetanic count.\r 100
22. What is double-burst stimulation?\r 100
23. What is acceleromyography?\r 101
24. Which nerves can be chosen for stimulation?\r 101
25. What are the characteristic responses to the various patterns of stimulation produced by nondepolarizing agents?\r 101
26. Summarize the characteristic responses to the various patterns of stimulation produced by depolarizing relaxants (succinylcholine).\r 101
27. For surgical purposes, based on nerve stimulation, what is adequate muscular relaxation?\r 101
28. How might relaxant activity be terminated?\r 102
29. Review the properties of sugammadex.\r 102
30. How might sugammadex alter anesthetic practice?\r 102
31. Discuss the appropriate time to reverse neuromuscular blockade based on nerve stimulation.\r 102
32. Review the acetylcholinesterase inhibitors commonly used to antagonize nondepolarizing blockade.\r 102
33. Review important side effects of acetylcholinesterase administration.\r 102
34. Should all patients who receive nondepolarizing relaxants be reversed?\r 103
35. Review the clinical signs associated with return of adequate strength.\r 103
36. A patient appears weak after pharmacologic reversal of neuromuscular blockade. What factors should be considered?\r 103
Suggested Readings\r 104
Chapter 14: Local Anesthetics\r 105
1. What role do local anesthetics play in the practice of anesthesiology?\r 105
2. How are local anesthetics classified?\r 105
3. How are local anesthetics metabolized?\r 105
4. How are impulses conducted in nerve cells?\r 105
5. What is the mechanism of action of local anesthetics?\r 106
6. Your patient states that he was told he is allergic to Novocain, which he received for a tooth extraction. Should you avoid using local anesthetics in this patient?\r 106
7. What determines local anesthetic potency?\r 106
8. What factors influence the duration of action of local anesthetics?\r 107
9. What determines local anesthetic onset time?\r 107
10. How does the onset of anesthesia proceed in a peripheral nerve block?\r 107
11. What are the maximum safe doses of various local anesthetics?\r 107
12. Which regional anesthetic blocks are associated with the greatest degree of systemic vascular absorption of local anesthetic?\r 108
13. Why are epinephrine and phenylephrine often added to local anesthetics? What cautions are advisable regarding the use of these drugs?\r 108
14. How does a patient become toxic from local anesthetics? What are the clinical manifestations of local anesthetic toxicity?\r 108
15. Is the risk of cardiotoxicity the same with various local anesthetics?\r 108
16. How will you prevent and treat systemic toxicity?\r 109
17. What is the risk of neurotoxicity with local anesthetics?\r 109
18. Which local anesthetic is associated with the risk of methemoglobinemia?\r 110
19. Describe the role of lipid infusion in the treatment of local anesthetic toxicity.\r 110
20. What are some of the newer local anesthetics and what are their potential applications?\r 110
Suggested Readings\r 111
Chapter 15: Inotropes and Vasodilator Drugs\r 112
1. What are the benefits of cardiovascular drugs? 112
2. Discuss the limitations of drugs that alter vascular tone. 112
3. What are the general goals of inotropic support and the characteristics of the ideal inotrope? 112
4. Discuss the hemodynamic profile of the phosphodiesterase III inhibitors amrinone and milrinone. 112
5. What untoward effects can result from use of phosphodiesterase inhibitors? How are these minimized? 112
6. What are other advantages of the phosphodiesterase inhibitors? 113
7. What intracellular intermediary is involved in the actions of phosphodiesterase III inhibitors and sympathomimetic amines? 113
8. How does increased intracellular cAMP affect the cardiac myocyte? What are the corresponding effects on myocardial function?\r 113
9. Describe the hemodynamic profiles of epinephrine, norepinephrine, and dopamine. 113
10. Describe the hemodynamic profiles of isoproterenol and dobutamine. 113
11. Which characteristics of -adrenergic agonists limit their effectiveness? 114
12. How may the side effects and limitations of -adrenergic agonists be minimized? 114
13. Is digitalis useful as an inotrope intraoperatively? 114
14. What are the mechanism and sites of action of nitrovasodilators? 114
15. Describe the antianginal effects of nitrates. 114
16. Describe the etiology of tachyphylaxis with nitrovasodilators. 115
17. Discuss the types and mechanisms of action of selective vasodilating agents available for clinical use. 115
18. Describe the mechanism of action of vasopressin. 116
19. How may vasopressin aid in the management of cardiogenic or septic shock? 116
20. How may -type natriuretic peptide aid in the management of end-stage congestive heart failure? 116
21. What is diastolic heart failure and what management options are available? 116
22. What are the clinical indications and current evidence for using dopamine? 116
23. Describe the new inotropic agent levosimendan, including mechanism of action and place in clinical therapy.\r 117
24. What mechanism of action accounts for the inotropic effect of thyroid hormone? 117
Suggested Readings\r 117
Chapter 16: Preoperative Medication\r 118
1. List the major goals of premedication. 118
2. List the most commonly used preoperative medications with the appropriate dose. 118
3. What factors should be considered in selecting premedication for a patient? 118
4. What factors limit the ability to give depressant medications preoperatively? 118
5. What is meant by psychologic premedication? 118
6. Discuss the role of benzodiazepines in premedication. 118
7. List the most common side effects when opioids are used as a premedication. 119
8. Describe the reasons to include an anticholinergic agent in premedication. 119
9. Summarize the effects of commonly used anticholinergic agents. 120
10. List the common side effects of anticholinergic medications. 120
11. A patient in the preoperative holding area is delirious after receiving only 0.4mg of scopolamine as a premedication. What is the cause of the delirium?How is it managed?\r 120
12. How does the concern for aspiration pneumonitis influence the choice of premedication? 120
13. Is it safe to allow patients to drink some water to swallow preoperative medications? 121
14. What are the differences between premedication of pediatric vs. adult patients? 121
15. How does the age of pediatric patients influence premedication? 121
16. Describe the preoperative management of a morbidly obese patient with a difficult airway. Assume that the patient is otherwise healthy.\r 122
Suggested Readings\r 122
Section III: Preparing for Anesthesia\r 123
Chapter 17: Preoperative Evaluation\r 123
1. What are the goals of the preoperative evaluation?\r 123
2. Discuss the important features of the preoperative evaluation.\r 123
3. How often does the preoperative evaluation alter care plans?\r 123
4. What are the features of informed consent?\r 123
5. What is the physical status classification of the ASA?\r 123
6. How long should a patient fast before surgery?\r 124
7. What are the appropriate preoperative laboratory tests? Which patients should have an electrocardiogram? Chest radiography?\r 124
8. What is the generally accepted minimum hematocrit for elective surgery?\r 124
9. Are there ways of predicting which patients will have pulmonary complications?\r 125
10. When are preoperative consultations with other specialists indicated?\r 125
11. What benefits and risks are associated with preoperative cigarette cessation?\r 126
12. How long before surgery must a patient quit smoking to realize any health benefits?\r 126
13. What are current guidelines for perioperative cardiac evaluation of patients scheduled for noncardiac surgery?\r 127
14. What are active cardiac conditions?\r 127
15. What are the clinical risk factors for a major perioperative cardiac event?\r 127
16. What constitutes the basic laboratory evaluation of coagulation status?\r 127
17. Are there special anesthetic considerations for surgical patients on warfarin?\r 127
18. What are considerations for patients with coronary stents?\r 128
19. A 3-year-old child presents for an elective tonsillectomy. His mother reports that for the past 3 days he has had a runny nose and postnasal drip. Shouldyou postpone surgery?\r 128
Suggested Readings\r 129
Chapter 18: The Anesthesia Machine and Vaporizers\r 130
1. What is an anesthesia machine? 130
2. Describe the plumbing of an anesthesia machine to create an overview of its essential interconnections. 130
3. What gases are ordinarily available on all anesthesia machines and what are their sources? 130
4. Since the flow rates of N2O and O2 are controlled independently, can the machine be set to deliver a hypoxic mixture to the patient?\r 130
5. What is a regulator? How does it control the flow of gas? 130
6. How does the hospital piped gas supply compare to the use of tank gas? 131
7. The hospital supply of oxygen is lost. The gauge on the O2 tank reads 1000 psi. How long will you be able to deliver oxygen before the tanks are empty?\r 131
8. A new tank of N2O is installed, and the pressure gauge reads only about 750 psig. Why is the pressure in the N2O tank different from the pressures of othergases?\r 131
9. List the uses of O2 in an anesthesia machine. 131
10. Describe the safety systems used to prevent incorrect gas connections at the wall and cylinders. 132
11. In addition to the distinctions described previously, what other ways are gases distinguished to help prevent human error?\r 132
12. There are two flowmeters for each gas on an anesthesia machine. Couldn't you safely get away with only one?\r 132
13. Why are the flowmeters for air, O2, and N2O arranged in a specific order? 132
14. What is meant by a fail-safe valve? 132
15. Would it be safer to leave the tank O2 supply on your machine turned on so, if the pipeline O2 failed, the machine would automatically switch immediately tothe backup tank supply?\r 132
16. How long can you continue to deliver O2 when the wall supply fails? 133
17. What physical principles are involved in the process of vaporization? 133
18. What does it mean when it is said that a vaporizer has variable bypass? What is the effect of having such a vaporizer turned on its side?\r 133
19. What does temperature compensation mean? 134
20. What is the pumping effect? 134
21. How does altitude affect modern vaporizers? 134
22. What happens if you put the wrong agent in a vaporizer calibrated for another agent? 134
23. What is different about the desflurane vaporizer? 134
24. What prevents turning on two vaporizers simultaneously? 135
25. At an altitude of 7000 feet, you have to set the vaporizer to deliver more desflurane than you would expect given the published minimum alveolarconcentration of that agent. Explain why this does not happen with vaporizersfor other anesthetic agents.\r 135
26. A patient with malignant hyperthermia needs to be anesthetized. Should the vaporizers be removed from the anesthesia machine?\r 135
27. What is a scavenger? 136
Suggested Readings\r 136
Chapter 19: Anesthesia Circuits and Ventilators\r 137
1. What are the different types of anesthesia breathing circuits?\r 137
2. Give an example of an open circuit.\r 137
3. Give an example of a semiopen circuit.\r 137
4. Give an example of a semiclosed circuit.\r 138
5. Give an example of a closed circuit\r 138
6. Rank the Mapleson circuits in order of efficiency for controlled and spontaneous ventilation\r 138
7. What circuit is most commonly used in anesthesia delivery systems today?\r 138
8. How is a breathing circuit disconnection detected during delivery of an anesthetic?\r 138
9. How is CO2 eliminated from a circle system?\r 139
10. How much CO2 can the absorbent neutralize? What factors affect its efficiency?\r 139
11. How do you know when the absorbent has been exhausted? What adverse reactions can occur between volatile anesthetic and CO2 absorbants?\r 139
12. How can you check the competency of a circle system?\r 139
13. How do anesthesia ventilators differ from intensive care unit ventilators?\r 139
14. What gas is used to drive the bellows in an anesthesia ventilator?\r 139
15. What is the status of the scavenger system when the bellows is below the top of its excursion?\r 140
16. What is the effect of the extra pressure required to open the exhaust valve on the patient?\r 140
17. What parameters can be adjusted on an anesthesia ventilator?\r 140
18. Why have descending bellows been abandoned in favor of ascending bellows?\r 140
19. What would be the cause when the bellows fails to rise completely between each breath?\r 140
20. How does fresh gas flow rate contribute to tidal volume?\r 141
21. How and where is tidal volume measured? Why are different measures frequently not equal?\r 141
22. When using very low flows of fresh gas, why is there sometimes a discrepancy between inspired oxygen concentration and fresh gas concentration?\r 141
Suggested Readings\r 141
Chapter 20: Patient Positioning\r 142
1. What is the goal of positioning a patient for surgery? 142
2. Review the most common positions used in the operating room. 142
3. What physiologic effects are related to change in body position? 142
4. Describe the lithotomy position and its common complications. 142
5. What nerves may be affected from lithotomy positioning? 144
6. What are the special concerns for a patient positioned in the lateral decubitus position? 144
7. What are the physiologic effects and risks associated with the Trendelenburg position? 144
8. What specific concerns are associated with the prone position? 144
9. What is the beach chair position? 145
10. When is a sitting position used? 145
11. What are the advantages of the sitting position? 145
12. List the disadvantages of the sitting position. 145
13. How does venous air embolism occur? What are the sequelae? 145
14. Review the sensitivity and limitations of monitors for detecting venous air embolism. 145
15. What are the concerns for positioning a pregnant patient? 146
16. What peripheral neuropathies are associated with cardiac surgery? 146
17. What is the most common perianesthetic neuropathy? 146
18. Review the incidence of brachial plexus injuries. 146
19. How might upper extremity neuropathies be prevented through careful positioning? 146
20. What injuries may occur to the eye? 147
21. Review the procedures that have been associated with postoperative visual loss. 147
22. What factors may predispose a patient having spine surgery to postoperative visual loss? 147
23. What patterns of blindness are noted? 148
24. How does the head position affect the position of the endotracheal tube with respect to the carina? 148
Suggested Readings\r 148
Chapter 21: Mechanical Ventilation in Critical Illness\r 149
1. Why might a patient require mechanical ventilation?\r 149
2. Which is the most common mode of ventilation, volume or pressure control?\r 149
3. What are the most commonly used modes of positive-pressure ventilation?\r 149
4. Does PC-CMV permit the patient to interact with the ventilator?\r 149
5. How does VC-A-C mode work?\r 150
6. Do VC-A-C and VC-SIMV differ?\r 150
7. When initiating mechanical ventilation, how do you decide on VC-A-C over VC-SIMV?\r 150
8. What other variables are associated with conventional modes of MV?\r 150
9. What is pressure support ventilation?\r 150
10. How does pressure control ventilation differ from pressure support ventilation?\r 150
11. What are trigger variables?\r 151
12. What are the goals of mechanical ventilation in patients with acute respiratory failure?\r 151
13. What are the initial ventilator settings in acute respiratory failure?\r 152
14. What is the role of positive end-expiratory pressure?\r 152
15. How is optimal positive end-expiratory pressure identified?\r 152
16. What is intrinsic or auto-positive end-expiratory pressure?\r 152
17. What are the side effects of PEEPe and PEEPi?\r 153
18. What is a ventilator bundle?\r 153
19. What is controlled hypoventilation with permissive hypercapnia?\r 153
20. What is compliance? How is it determined?\r 154
21. How is peak pressure measured?\r 154
22. How is static pressure measured?\r 154
23. How is compliance calculated?\r 154
24. Is ventilation in the prone position an option for patients who are difficult to oxygenate?\r 154
25. What are the indications for prone ventilation?\r 155
26. How is the patient who is fighting the ventilator approached?\r 155
27. Should neuromuscular blockade be used to facilitate mechanical ventilation?\r 155
28. Is split-lung ventilation ever useful?\r 156
Suggested Readings\r 156
Section IV: Patient Monitoring and Procedures\r 157
Chapter 22: Electrocardiography\r 157
1. Are all abnormal ECGs indicative of heart disease?\r 157
2. What is the differential diagnosis for low voltage?\r 157
3. Is electrocardiography sensitive or insensitive for detecting chamber enlargement and hypertrophy?\r 157
4. Which clues suggest that a patient may have left ventricular hypertrophy?\r 157
5. An adult has a large R wave in V1. What is the differential diagnosis?\r 157
6. What leads are most helpful when looking for a bundle-branch block?\r 158
7. What are the characteristics of a right bundle-branch block?\r 158
8. What is an intraventricular conduction delay? When is it seen?\r 158
9. What are the characteristics of a left bundle-branch block?\r 158
10. What is a hemiblock?\r 159
11. You are attempting to pass a Swan-Ganz catheter into the pulmonary artery in a patient with LBBB. When the hemodynamic tracing suggests that the cathetertip is in the right ventricle, the patient suddenly becomes bradycardic, with aheart rate of 25. What happened?\r 159
12. Does a normal ECG exclude the possibility of severe coronary artery disease?\r 159
13. How are patients with myocardial infarction subdivided on the basis of ECG changes during infarction?\r 159
14. Does ST-segment elevation always indicate a myocardial infarction?\r 161
15. For patients with ST-segment elevation myocardial infarction, how is the location identified?\r 161
16. A patient has evidence on ECG of an acute inferior myocardial infarction. What associated findings should you look for?\r 162
17. What is reciprocal change? Why is it important?\r 162
18. What ECG findings suggest hypothyroidism?\r 162
19. An elderly patient presents with fatigue, confusion, and atrial fibrillation with a slow ventricular response (heart rate = 40). The ECG demonstrates STdepression that is concave upward. The family states that the patient is on anunknown medication that is locked in his apartment. What laboratory test should you order to confirm your suspicion?\r 163
20. An ECG recorded when the operating room nurse is scrubbing the patient's chest demonstrates wide complex electrical activity. The patient isasymptomatic. What do you suspect? How can you prove that you are correctwhen you analyze the ECG tracing? 163
21. What ECG findings suggest hyperkalemia?\r 163
22. What ECG findings suggest hypokalemia?\r 163
23. What ECG findings suggest hypocalcemia?\r 165
24. What ECG changes suggest hypercalcemia?\r 165
25. What are some of the common causes of a prolonged QT interval?\r 166
26. A patient has a right bundle-branch block that is new compared to the ECG from 2 years ago. How should I proceed?\r 166
27. A patient has a left bundle-branch block that is new compared to the ECG from 2 years ago. How should I proceed?\r 167
Suggested Readings\r 167
Chapter 23: Pulse Oximetry\r 168
1. What is pulse oximetry?\r 168
2. How important is pulse oximetry?\r 168
3. What are transmission pulse oximetry and reflection pulse oximetry?\r 168
4. How does a pulse oximeter work?\r 168
5. How is oxygen saturation determined from the amount of red and infrared light received and absorbed?\r 168
6. How does the pulse oximeter determine the degree of arterial hemoglobin saturation?\r 169
7. What is the normalization procedure?\r 169
8. How does the R/IR ratio relate to the oxygen saturation?\r 169
9. What is the oxyhemoglobin dissociation curve?\r 170
10. Why might the pulse oximeter give a false reading? Part 1-not R/IR related\r 171
11. Why might the pulse oximeter give a false reading? Part 2-R/IR related.\r 172
12. The saturation plummets after injection of methylene blue. Is the patient desaturating?\r 172
13. Explain the difference between functional hemoglobin and fractional hemoglobin saturation.\r 173
14. Do pulse oximeters measure functional hemoglobin saturation or fractional hemoglobin saturation?\r 173
15. Since the patient is oxygenated before anesthetic induction, if the pulse oximeter reaches 100%, does this indicate complete denitrogenation?\r 173
16. Is the pulse oximeter a good indicator of ventilation?\r 173
17. Are there complications associated with the use of pulse oximetry probes?\r 173
Suggested Readings\r 174
Chapter 24: Capnography\r 175
1. What is the difference between capnometry and capnography? Which is better?\r 175
2. Describe the most common method of gas sampling and the associated problems.\r 175
3. What is the importance of measuring CO2?\r 175
4. Describe the capnographic waveform.\r 175
5. What may cause elevation of the baseline of the capnogram?\r 176
6. Does ETCO2 correlate with PaCO2?\r 176
7. Is it possible to see exhaled CO2 after accidental intubation of the esophagus?\r 176
8. What might result in sudden loss of capnographic waveform?\r 176
9. What process might lead to decreases in ETCO2?\r 177
10. What processes may increase ETCO2?\r 177
11. What processes can change the usual configuration of the waveform?\r 178
Suggested Readings\r 179
Chapter 25: Central Venous Catheterization And Pressure Monitoring\r 180
1. Define central venous catheterization.\r 180
2. What are the perioperative indications for placement of a central venous catheter? 180
3. What are the nonoperative indications for placement of a central venous catheter? 180
4. What is the best approach to central venous cannulation? 180
5. Describe the subclavian vein approach. 180
6. Describe the internal jugular vein approach. 181
7. Describe the external jugular vein approach. 181
8. When is the femoral vein approach used? 181
9. Review the different types of central venous catheters. 181
10. How is a catheter introduced into the central venous circulation? 181
11. In attempting a central venous puncture, dark blood returns. Does this satisfy you that you are indeed within a vein?\r 182
12. How is central venous pressure measured? 182
13. At what point on the body should central venous pressure be measured? 182
14. Where should the distal orifice of the catheter be positioned? 183
15. How can you judge the correct positioning of the distal orifice of the catheter? 183
16. Describe the normal central venous pressure waveform and relate its pattern to the cardiac cycle. 183
17. What influences central venous pressure? 184
18. Is central venous pressure an indicator of cardiac output? 184
19. How does central venous pressure relate to right ventricular preload? 184
20. Does central venous pressure relate to left ventricular preload? 185
21. Is there a single normal central venous pressure reading? 185
22. Are there noninvasive alternatives to central venous pressure that better indicate volume status? 186
23. How can an abnormal central venous pressure waveform be used to diagnose abnormal cardiac events? 186
24. Can you use the central venous catheter for blood transfusions? 186
25. Describe complications associated with placement of the central venous catheter. 186
26. Are any special precautions needed when removing a central venous catheter? 187
Suggested Readings\r 187
Chapter 26: Pulmonary Artery Catheterization\r 188
1. What pressures are measured by pulmonary artery catheters? 188
2. What are normal values for central venous, pulmonary artery, and pulmonary artery occlusion pressures? 188
3. What other hemodynamic variables can be measured or calculated from the pulmonary artery catheter? What are their normal values?\r 188
4. In what surgical procedures are pulmonary artery catheters most likely to be placed? What medical problems might influence a clinician’s likelihood toinsert a pulmonary artery catheter before surgery?\r 188
5. Do pulmonary artery catheters improve patient outcomes? 189
6. What complications are associated with pulmonary artery catheterization? 189
7. Summarize the usual presentation, major risk factors, and management of pulmonary artery rupture. 189
8. How might kinking of the pulmonary artery catheter be avoided? 189
9. What is the phlebostatic axis? 190
10. Describe the features of the central venous waveform. 190
11. Describe the features of the right ventricle waveform. 190
12. Describe the pulmonary artery waveform. 190
13. Review the pulmonary artery occlusion pressure waveform. 191
14. Contrast spontaneous breathing and positive-pressure mechanical ventilation and their effect on pulmonary artery occlusion pressure waveforms.\r 191
15. Pulmonary artery catheter pressures are surrogate measures for what important physiologic variables? What assumptions are made about the variables obtained throughpulmonary artery catheterization?\r 192
16. In the presence of a large pulmonary artery occlusion pressure v wave, how should pulmonary artery occlusion pressure be estimated?\r 193
17. How might catheter position within the lung lead to errors in interpreting left atrial pressure catheter data?\r 193
Acknowledgment\r 193
Suggested Readings\r 193
Chapter 27: Arterial Catheterization and Pressure Monitoring\r 194
1. Why is arterial blood pressure monitored? 194
2. How do noninvasive blood pressure devices work? 194
3. What are the indications for intra-arterial blood pressure monitoring? 194
4. What are the complications of invasive arterial monitoring? 195
5. How is radial artery catheterization performed? 195
6. Describe the normal blood supply to the hand. 195
7. Describe Allen's test. Explain its purpose. 195
8. Is Allen's test an adequate predictor of ischemic sequelae? 196
9. What alternative cannulation sites are available? 196
10. How does a central waveform differ from a peripheral waveform? 196
11. What information can be obtained from an arterial waveform? 197
12. How is the arterial waveform reproduced? 197
13. Define damping coefficient and natural frequency. 197
14. What are the characteristics of overdamped and underdamped monitoring systems? 198
15. How can the incidence of artifacts in arterial monitoring systems be reduced? 198
16. What is distal pulse amplification? 198
17. What are the risks and benefits of having heparin in the fluid of a transduction system? 199
18. Are any risks associated with flushing the catheter system? 199
Suggested Readings\r 199
Section V: Perioperative problems\r 201
Chapter 28: Blood Pressure Disturbances\r 201
1. What is the significance of hypertension to the general patient population?\r 201
2. What blood pressure value is considered hypertensive?\r 201
3. What causes hypertension?\r 201
4. What are some of the physiologic processes that occur as a patient becomes hypertensive?\r 201
5. Identify current drug therapies for hypertensive patients.\r 201
6. What are the consequences of sustained hypertension?\r 202
7. Why should antihypertensives be taken up until the time of surgery?\r 202
8. Which antihypertensives should be held the day of surgery?\r 203
9. Is regional anesthesia a viable option for hypertensive patients?\r 203
10. Provide a differential diagnosis for intraoperative hypertension.\r 203
11. How should intraoperative and postoperative hypertension be managed?\r 203
12. Are hypertensive patients undergoing general anesthesia at increased risk for perioperative cardiac morbidity?\r 204
13. Broadly categorize the causes of perioperative hypotension.\r 204
14. What is joint cement and how does it cause hypotension?\r 204
15. Why does administration of renin-angiotensin system antagonists result in hypotension in the peri-induction period? How might the hypotension betreated?\r 205
16. How does regional anesthesia create hypotension?\r 205
17. How is intraoperative hypotension evaluated and treated?\r 205
18. Review the standard adrenergic agonists used to manage hypotension during anesthesia.\r 205
19. How should hypotension caused by cardiac ischemia be treated?\r 205
Suggested Readings\r 206
Chapter 29: Awareness During Anesthesia\r 207
1. Review the classifications of memory and awareness.\r 207
2. What is the incidence of awareness?\r 207
3. Are certain techniques and clinical situations more likely to result in awareness?\r 207
4. Describe clinical signs and symptoms of light anesthesia.\r 207
5. What are the ramifications of awareness?\r 208
6. How should a patient who may have been aware during a recent anesthetic be approached?\r 208
7. What are methods to avoid awareness?\r 208
8. Are monitors available to assess the depth of anesthesia?\r 209
Suggested Readings\r 209
Chapter 30: Cardiac Dysrhythmias\r 210
1. Name some of the causes of sinus bradycardia. 210
2. A postoperative patient develops light-headedness with sinus bradycardia and a heart rate of 36. Systolic blood pressure is 83 mm Hg. What treatmentshould be undertaken?\r 210
3. How is first-degree atrioventricular block identified? 210
4. Describe the types of second-degree atrioventricular block. 210
5. What is third-degree atrioventricular block? 210
6. In addition to complete heart block, what are some other causes of atrioventricular dissociation? 211
7. What are some of the causes of atrioventricular block? 211
8. Your patient exhibits transient evidence of both sinoatrial node and atrioventricular node dysfunction with simultaneous slowing of the sinusrate and second-degree atrioventricular block, type I. What is going on?\r 211
9. Which antihypertensive agents are to be avoided in patients with significant bradycardia or heart block? 211
10. Name some of the arrhythmias seen with digoxin toxicity. 211
11. Is it always appropriate to treat sinus tachycardia with -blockers? 211
12. What is meant by the term paroxysmal supraventricular tachycardia? 212
13. What is multifocal atrial tachycardia? When is it seen? 212
14. What is the main contraindication to adenosine? 212
15. A patient suddenly develops an irregular rhythm with heart rate of 170. A 12-lead electrocardiogram shows no P waves. What is the likely rhythm?How should it be managed?\r 212
16. Is adenosine useful for the treatment of atrial fibrillation? 212
17. What should be done to reduce the risk of stroke in a patient with chronic or paroxysmal atrial fibrillation?\r 213
18. What is a wide-complex tachycardia? What is in the differential diagnosis? 213
19. A 60-year-old man with a history of prior anterior myocardial infarction develops a monomorphic wide complex tachycardia after noncardiac surgery.What is the most likely diagnosis, and which treatments would be appropriateor inappropriate?\r 213
20. What characteristics of a wide-complex tachycardia suggest ventricular tachycardia rather than supraventricular tachycardia with aberrancy?\r 213
21. Why is it important to distinguish between polymorphic and monomorphic ventricular tachycardia? 214
22. How is torsades de pointes treated? 214
23. How are patients with congenital long QT syndrome and syncope treated? 214
24. Are implantable cardioverter-defibrillators curative for ventricular arrhythmias? 214
25. Do all patients with an accessory pathway have a delta wave (WPW pattern) on their baseline electrocardiogram?\r 214
26. A 25-year-old patient presenting with palpitations is noted to have a wide-complex, irregular tachycardia at a rate of 260. The upstroke of the QRS isslurred. The blood pressure is normal, and the patient appears well. What is themost likely diagnosis? What treatments are indicated? What treatments are potentially harmful?\r 215
27. Why is it important to save electrocardiogram tracings that document an arrhythmia? 215
Suggested Readings\r 216
Chapter 31: Temperature Disturbances\r 217
1. Describe the processes that contribute to thermoregulation.\r 217
2. Which patients are at risk for hypothermia?\r 217
3. Does hypothermia have an impact on patient outcome?\r 217
4. Characterize the different stages of hypothermia.\r 217
5. Which perioperative events predispose a patient to hypothermia?\r 218
6. Which physical processes contribute to a patient's heat loss in the operating room?\r 219
7. As a practical matter, what is done to a patient in the operating room that increases heat loss?\r 219
8. Should all patients receive temperature monitoring within the operating room? What are acceptable sites for temperature monitoring?\r 219
9. Review shivering and nonshivering thermogenesis.\r 219
10. Describe the electrocardiographic manifestations of hypothermia.\r 219
11. How does hypothermia affect the actions and metabolism of drugs used in the operative environment?\r 220
12. Discuss methods of rewarming.\r 220
13. Define hyperthermia.\r 220
14. Describe the manifestations of hyperthermia.\r 220
15. What conditions are associated with hyperthermia?\r 221
16. What drugs increase the risk of hyperthermia?\r 221
17. What are the pharmacologic effects of hyperthermia?\r 221
18. What is the treatment for the hyperthermic patient in the operating room?\r 221
Suggested Readings\r 221
Chapter 32: Postanesthetic Care\r 222
1. Which patients should be cared for in the postanesthetic care unit? 222
2. Review important considerations as the patient is about to be moved from the operating room to the postanesthetic care unit.\r 222
3. Describe the process for postanesthetic care unit admission. 222
4. What monitors should be used routinely in the postanesthetic care unit? 222
5. What problems should be resolved during postanesthetic care? 223
6. How is ventilation adversely affected by anesthesia? 223
7. Describe the appearance of residual neuromuscular blockade. 223
8. How do opioids and residual volatile anesthetics affect breathing? 224
9. How should these causes of hypoventilation be treated? 224
10. The patient has been delivered to the postanesthetic care unit. Oxygen saturations are noted to be in the upper 80s, and chest wall movement isinadequate. How should the patient be managed?\r 225
11. The patient develops stridorous breath sounds. Describe the likely cause and the appropriate management. 225
12. How is laryngospasm treated? 225
13. The laryngospasm resolves. Chest auscultation reveals bilateral rales. What is the most likely cause? 225
14. How is negative-pressure pulmonary edema treated? 226
15. Describe an approach to the evaluation of postoperative hypertension and tachycardia. 226
16. What might cause hypotension in the postoperative phase? 226
17. How should hypotension be treated? 226
18. Under what circumstances is a patient slow to awaken? 226
19. Discuss the issues surrounding postoperative nausea and vomiting. 227
20. Should ambulatory patients be treated differently in the postanesthetic care unit? 227
21. Should patients be required to tolerate oral intake before postanesthetic care unit discharge? 227
22. A patient has undergone a general anesthetic for an outpatient procedure. Recovery has been uneventful, yet the patient has no ride home. How shouldthis be handled?\r 227
23. In designing a postanesthetic care unit for a new outpatient surgical center, the board of directors states that all patients should be kept in the postanestheticcare unit for at least 1 hour for recovery. Is this minimal postanesthetic careunit stay reasonable?\r 227
Suggested Readings\r 228
Section VI: Anesthesia And Systemic Disease\r 229
Chapter 33: Ischemic Heart Disease\r 229
1. Name the known risk factors for the development of ischemic heart disease.\r 229
2. Describe the normal coronary blood flow.\r 229
3. Describe the coronary anatomy.\r 229
4. Explain the determinants of myocardial oxygen demand and delivery.\r 229
5. What is the clinical manifestation of myocardial ischemia?\r 230
6. How is angina graded?\r 230
7. Describe the pathogenesis of a perioperative myocardial infarction.\r 230
8. What clinical factors increase the risk of a perioperative myocardial infarction following noncardiac surgery?\r 230
9. What is the definition of recent and prior myocardial infarction?\r 231
10. How does the type of surgery influence the risk stratification for perioperative ischemia?\r 231
11. How can cardiac function be assessed by history and physical examination?\r 231
12. When would you consider noninvasive stress testing before noncardiac surgery?\r 231
13. What tests performed by medical consultants can help further evaluate patients with known or suspected ischemic heart disease?\r 231
14. What are the main indications for coronary revascularization before noncardiac surgery?\r 232
15. A patient after percutaneous coronary intervention is scheduled for surgery. What is your concern?\r 232
16. Why do patients with drug-eluting stents need significantly longer time than those with bare metal stents?\r 233
17. Should all cardiac medications be continued throughout the perioperative period?\r 233
18. How would you give β-blockers to high-risk patients?\r 233
19. Would you give prophylactic intraoperative nitroglycerin infusion?\r 233
20. What electrocardiogram findings support the diagnosis of ischemic heart disease?\r 233
21. When is a resting 12-lead ECG recommended?\r 233
22. How long should a patient with a recent myocardial infarction wait before undergoing elective noncardiac surgery?\r 234
23. Outline the hemodynamic goals of induction and maintenance of general anesthesia in patients with IHD.\r 234
24. What monitors are useful for detecting ischemia intraoperatively?\r 234
25. Would you use transesophageal echocardiography routinely in patients with high cardiac risk undergoing noncardiac surgery?\r 234
26. Is a pulmonary artery catheter reasonable to use routinely for optimization of high-risk patients? What is its potential benefit?\r 234
Suggested Readings\r 235
Chapter 34: Heart Failure\r 236
1. What is heart failure? 236
2. Name the causes of heart failure. 236
3. Describe the classification of heart failure. 237
4. How is the severity of heart failure classified? 237
5. What major alterations in the heart occur in patients with heart failure? 237
6. What is the Frank-Starling law? 238
7. How is cardiac output calculated? What is a normal cardiac output and index? 238
8. What is the connection between exercise and cardiac output? 238
9. What is systolic dysfunction? 238
10. What is diastolic dysfunction? 238
11. Do the neurohumoral responses in heart failure have therapeutic significance? 239
12. What are the presenting symptoms of heart failure? 240
13. What physical signs suggest heart failure? 240
14. What laboratory studies are useful in evaluating the patient with heart failure? 240
15. What treatment strategies are used in the different stages of heart failure? 241
16. What should be considered in preparing to conduct an anesthetic on patients with heart failure? 242
17. How would you manage a patient with decompensated heart failure? 242
18. Which anesthetic agents can be used in decompensated heart failure? 242
19. Is regional anesthesia contraindicated in patients with heart failure? 242
20. How would you support the heart in decompensated heart failure during anesthesia? 242
Suggested Readings\r 243
Chapter 35: Valvular Heart Disease\r 244
1. Discuss the basic pathophysiology of valvular heart diseases. 244
2. Describe common findings of the history and physical examination in patients with valvular heart disease. 244
3. Which tests are useful in the evaluation of valvular heart disease? 244
4. How is echocardiography helpful in anesthesia management? 244
5. Which other monitors aid the anesthesiologist in the perioperative period? 245
6. What is a pressure-volume loop? 245
7. How does a normal pressure-volume loop appear? 245
8. Discuss the pathophysiology of aortic stenosis. 245
9. How can be the severity of aortic stenosis characterized by echocardiography? 246
10. What is the indication for aortic valve replacement in aortic stenosis? 246
11. How are the compensatory changes in the left ventricle represented by a pressure-volume loop? 246
12. What are the hemodynamic goals in the anesthetic management of patients with aortic stenosis? 247
13. Discuss the management of the patients with aortic stenosis after aortic valve replacement. 247
14. Discuss the pathophysiology of aortic insufficiency. 247
15. What parameters can be used in echocardiography to characterize the severity of aortic insufficiency? 248
16. What is the indication for aortic valve replacement in aortic stenosis? 248
17. What does the pressure-volume loop look like in acute and chronic aortic insufficiency? 248
18. What are the hemodynamic goals in the anesthetic management of patients with aortic insufficiency? 249
19. Discuss the hemodynamic changes in patients with aortic insufficiency after aortic valve replacement. 249
20. What is the pathophysiology of mitral stenosis? 249
21. What parameters can be used in echocardiography to characterize the severity of mitral stenosis? 249
22. What is the indication for mitral valve replacement in mitral stenosis? 249
23. How is the pressure-volume loop changed from normal in mitral stenosis? 250
24. What are the anesthetic considerations in mitral stenosis? 250
25. Discuss the postoperative management of patients with mitral stenosis after mitral valve replacement. 250
26. Describe the pathophysiology of mitral regurgitation. 250
27. What parameters can be used in echocardiography to characterize the severity of mitral regurgitation? 251
28. What is the indication for mitral valve replacement in mitral regurgitation? 251
29. How is the pressure-volume loop in mitral regurgitation changed from normal? 251
30. What are the hemodynamic goals in anesthetic management of mitral regurgitation? 252
31. Discuss the hemodynamic management after mitral valve repair or replacement in patient with mitral regurgitation.\r 253
Suggested Readings\r 253
Chapter 36: Aorto-Occlusive Disease\r 254
1. Define aortic vascular disease. 254
2. What risk factors and coexisting diseases are common in these patients? 254
3. What is the natural progression of aortic vascular disease? 254
4. Describe preoperative preparation of such patients in the presence of concurrent disease. 254
5. List the appropriate intraoperative monitors for aortic surgery. 255
6. Discuss the physiologic implications of aortic clamping and unclamping. 255
7. Review the anesthetic goals for these surgical patients. 255
8. What can be done intraoperatively to preserve renal function? 256
9. What are the potential advantages to postoperative epidural analgesia? 256
10. What specific concerns exist for endovascular repair of the aorta? 256
11. Describe the primary aspects of management when a patient presents with an acute abdominal aortic rupture.\r 257
12. Discuss the important elements of postoperative care. 257
Suggested Readings 258
Chapter 37: Intracranial and Cerebrovascular Disease\r 259
1. What is cerebrovascular insufficiency?\r 259
2. Compare global ischemia with focal ischemia.\r 259
3. How does cerebrovascular insufficiency manifest itself?\r 259
4. What is the etiology of cerebrovascular accidents and transient ischemic attacks?\r 259
5. Are other factors involved in neurologic outcome following an episode of cerebrovascular insufficiency?\r 259
6. List the risk factors for cerebral ischemic events.\r 260
7. Who is a candidate for carotid endarterectomy?\r 260
8. Define cerebral autoregulation. How is it affected in cerebrovascular disease and what are the anesthetic implications?\r 260
9. How are the cerebral responses to hypercapnia and hypocapnia altered in cerebrovascular disease? What are the anesthetic i implications?\r 260
10. What is normal cerebral blood flow? At what level is cerebral blood flow considered ischemic?\r 260
11. How do inhalational anesthetics affect cerebral perfusion and cerebral metabolic rate?\r 261
12. How should patients having carotid endarterectomy be monitored?\r 261
13. Is regional or general anesthesia preferred for the endarterectomy patient?\r 261
14. What are the advantages of regional anesthesia for carotid endarterectomy?\r 261
15. What are the advantages and disadvantages of general anesthesia for patients undergoing carotid endarterectomy?\r 261
16. What methods of monitoring cerebral perfusion during general anesthesia are available?\r 261
17. Do stump pressures provide reliable cerebral perfusion information?\r 261
18. Does intraoperative electroencephalogram provide clinically useful information during carotid endarterectomy?\r 262
19. What are the common postoperative complications of carotid endarterectomy?\r 262
20. What are the major causes and presentations of spontaneous subarachnoid hemorrhage?\r 262
21. List the Hunt-Hess classification of neurologic status following spontaneous subarachnoid hemorrhage.\r 262
22. Describe the management of intracranial aneurysms following spontaneous subarachnoid hemorrhage.\r 263
23. Why is early surgical clipping so critical in the management of spontaneous subarachnoid hemorrhage resulting from aneurysm rupture?\r 263
24. How is vasospasm diagnosed? Who is at risk?\r 263
25. Describe the treatment options if vasospasm is suspected following an spontaneous subarachnoid hemorrhage....\r 263
26. How can surgical exposure be improved and the brain be protected during aneurysm surgery?\r 264
27. What is a cerebral arteriovenous malformation?\r 265
28. How do arteriovenous malformations typically present?\r 265
29. What are the common treatment modalities for arteriovenous malformations?\r 265
30. Describe the anesthetic management for surgical excision of an arteriovenous malformation.\r 265
31. What is normal perfusion pressure breakthrough?\r 265
Suggested Readings\r 266
Chapter 38: Reactive Airway Disease\r 267
1. Define reactive airway disease, in particular, asthma.\r 267
2. What are the different types of asthma?\r 267
3. What diseases mimic asthma?\r 267
4. What are the important historical features of an asthmatic patient?\r 267
5. What physical findings are associated with asthma?\r 268
6. What preoperative tests should be ordered?\r 268
7. Describe the mainstay of therapy in asthma.\r 268
8. What other medications and routes of delivery are used in asthma?\r 268
9. What is the best approach to preoperative management of the patient with reactive airway disease?\r 270
10. Review the pros and cons of induction agents in asthmatic patients.\r 270
11. What agents may be used for maintenance anesthesia?\r 270
12. What are the complications of intubation and mechanical ventilation in asthmatic patients?\r 271
13. What are the causes of intraoperative wheezing and the correct responses to asthmatic patients with acute bronchospasm?\r 271
14. Describe the emergence techniques for asthmatic patients under general endotracheal anesthesia.\r 272
15. What new therapies are available to anesthesiologists treating asthmatic patients in bronchospasm?\r 272
Suggested Readings\r 273
Chapter 39: Aspiration\r 274
1. What is aspiration and what differentiates aspiration pneumonitis from aspiration pneumonia? 274
2. How often does aspiration occur and what is the morbidity and mortality rate? 274
3. What are risk factors for aspiration? 274
4. What precautions before anesthetic induction are required to prevent aspiration or mollify its sequelae? 274
5. How might a patient with a difficult airway and at risk for aspiration be managed? 275
6. Describe the different clinical pictures caused by the three broad types of aspirate: acidic fluid, nonacidic fluid, and particulate matter.\r 275
7. Review the clinical signs and symptoms after aspiration. 276
8. When is a patient suspected of aspiration believed to be out of danger? 276
9. Describe the treatment for aspiration. 276
Suggested Readings\r 277
Chapter 40: Chronic Obstructive Pulmonary Disease\r 278
1. Define chronic obstructive pulmonary disease. 278
2. What are the features of asthma and asthmatic bronchitis? 278
3. Describe chronic bronchitis and emphysema. 278
4. List contributory factors associated with the development of chronic obstructive pulmonary disease. 278
5. What historical information should be obtained before surgery? 279
6. What features distinguish pink puffers from blue bloaters? 279
7. List abnormal physical findings in patients with chronic obstructive pulmonary disease. 279
8. What laboratory examinations are useful? 279
9. How does a chronically elevated arterial carbon dioxide partial pressure affect the respiratory drive in a person with chronic obstructive pulmonarydisease?\r 279
10. What are the deleterious effects of oxygen administration in these patients? 280
11. How do general anesthesia and surgery affect pulmonary mechanics? 280
12. What factors are associated with an increased perioperative morbidity or mortality? 280
13. List the common pharmacologic agents used to treat COPD and their mechanisms of action. 281
14. What therapies are available to reduce perioperative pulmonary risk? 281
15. Do advantages exist with regional anesthesia techniques in patients with chronic obstructive pulmonary disease?\r 282
16. What agents can be used for induction and maintenance of general anesthesia? 282
17. Discuss the particular concerns regarding muscle relaxation (and reversal) in patients with chronic obstructive pulmonary disease.\r 282
18. Discuss the choice of opioids in these patients. 282
19. Define auto-PEEP. 283
20. Form a differential diagnosis for intraoperative wheezing. 283
21. How would you treat intraoperative bronchospasm? 283
22. What factors may determine the need for postoperative mechanical ventilation? 284
23. Should H2-receptor antagonists be avoided in patients with chronic obstructive pulmonary disease? 284
24. At the conclusion of surgery, should a patient with chronic obstructive pulmonary disease be extubated deep or awake?\r 284
Suggested Readings\r 284
Chapter 41: Acute Respiratory Distress Syndrome (ARDS)\r 285
1. What is the difference between acute lung injury and acute respiratory distress syndrome?\r 285
2. How would you define acute respiratory distress syndrome?\r 285
3. What are the risk factors for acute respiratory distress syndrome?\r 286
4. What is the most common cause and mortality rate for acute respiratory distress syndrome?\r 287
5. Describe the pathogenesis of acute respiratory distress syndrome.\r 287
6. Describe the stages of acute respiratory distress syndrome.\r 288
7. How do patients who develop acute respiratory distress syndrome typically present?\r 288
8. Do any pulmonary diseases mimic acute respiratory distress syndrome?\r 289
9. Are any drug therapies available to treat acute respiratory distress syndrome?\r 289
10. Does that mean that none of these agents has a role in patients with refractory acute respiratory distress syndrome?\r 289
11. Is there an optimal fluid strategy in acute respiratory distress syndrome?\r 289
12. Can mechanical ventilation exacerbate or delay healing from acute respiratory distress syndrome?\r 290
13. How should patients with acute respiratory distress syndrome be ventilated?\r 290
14. Define lung recruitment maneuver and the different techniques for performing it.\r 290
15. How does prone ventilation improve oxygenation?\r 290
16. Does prone ventilation offer a survival benefit in acute respiratory distress syndrome patients?\r 291
Suggested Readings\r 292
Chapter 42: Pulmonary Hypertension\r 293
1. Define pulmonary hypertension.\r 293
2. List conditions that produce pulmonary hypertension.\r 293
3. Discuss the pathophysiology and natural history of pulmonary hypertension.\r 293
4. What is the blood supply to the right ventricle?\r 294
5. How is pulmonary vascular resistance calculated and what are normal values?\r 294
6. What are some electrocardiographic and radiologic features of the disease?\r 294
7. What signs and symptoms suggest pulmonary hypertension?\r 294
8. Discuss the observed abnormalities on pulmonary function testing.\r 294
9. What additional diagnostic tests are available for evaluating pulmonary hypertension? What results may be expected?\r 295
10. Discuss standard therapies for patients suffering from pulmonary hypertension.\r 295
11. What medications are available to treat increased pulmonary artery pressures?\r 295
12. A patient with a history of pulmonary hypertension presents for a surgical procedure. How should this patient be monitored intraoperatively?\r 296
13. What intraoperative measures may decrease PH?\r 296
14. Discuss the effect of volatile anesthetics and nitrous (not nitric) oxide on the pulmonary circulation.\r 296
15. What are the effects of intravenous anesthetics on pulmonary artery pressure and hypoxic pulmonary vasoconstriction?\r 297
16. Are regional anesthetics an option?\r 297
17. Discuss the advantages and disadvantages of the intravenous nitrovasodilators.\r 297
18. Discuss the properties of nitric oxide (NO).\r 297
19. Discuss the therapeutic usefulness and limitations of nitric oxide in pulmonary hypertension.\r 298
20. What are prostanoids and their therapeutic counterparts?\r 298
21. What is the value of adenosine?\r 299
22. What are phosphodiesterase-5 inhibitors?\r 299
Suggested Readings\r 299
Chapter 43: Perioperative Hepatic Dysfunction\r 300
1. What is the normal physiologic function of the liver? 300
2. What is the most common cause of acute parenchymal liver disease? 300
3. What is cirrhosis? 300
4. Describe the neurologic derangements in patients with cirrhosis. 300
5. What pulmonary changes occur in a patient with cirrhosis? 301
6. Describe the changes in the cardiovascular system in patients with cirrhosis. 301
7. What is hepatorenal syndrome? How does it differ from acute renal failure in patients with end-stage liver disease?\r 301
8. Describe volume assessment and fluid management in patients with hepatorenal syndrome. 301
9. What are the gastrointestinal and hematologic derangements that occur with cirrhosis? 301
10. Which liver function tests are used to detect hepatic cell damage? 302
11. Describe the laboratory tests used to assess hepatic synthetic function and their limitations. 302
12. What laboratory tests are used to diagnosis cholestatic liver disease? 302
13. How can laboratory results be used to stratify perioperative risk in patients with cirrhosis? 302
14. What risk factors for liver disease can be identified by history and physical examination? 303
15. What is jaundice? 303
16. Distinguish between unconjugated and conjugated hyperbilirubinemia. 303
17. List the common causes of unconjugated and conjugated hyperbilirubinemia. 304
18. What are the main causes of hepatocyte injury? 304
19. How do inhalational anesthetic gases produce hepatic dysfunction? 304
20. How do inhalational agents alter hepatic blood flow? 305
21. What are the preoperative management goals in a patient with liver disease? 306
22. What are the intraoperative management goals in a patient with liver disease? 306
23. What adjustment in anesthetic medications should be made in a patient with liver disease? 306
Suggested Readings\r 307
Chapter 44: Renal Function and Anesthesia\r 308
1. Describe the anatomy of the kidney. 308
2. List the major functions of the kidney. 309
3. Discuss glomerular and tubular function. 309
4. Review the site of action and significant effects of commonly used diuretics. 309
5. Describe the unique aspects of renal blood flow and control. 309
6. Describe the sequence of events associated with decreased renal blood flow. 310
7. What preoperative risk factors are associated with postoperative renal failure? 311
8. Discuss the major causes of perioperative acute renal failure. 311
9. What laboratory abnormalities are observed in renal failure? 311
10. Comment on various laboratory tests and their use in detecting acute renal dysfunction. 311
11. What are measures of tubular function? 313
12. At what point is renal reserve lost and do patients develop laboratory evidence of renal insufficiency? 314
13. Discuss the usefulness of urine output in assessing renal function. 314
14. What is the best way to protect the kidneys during surgery? 314
15. Does dopamine have a role in renal preservation? 314
16. Describe the effects of volatile anesthetics on renal function. 314
17. What is the best relaxant for patients with renal insufficiency? 315
18. How are patients with renal insufficiency managed perioperatively? 315
19. What is accomplished during hemodialysis? 316
Suggested Readings\r 316
Chapter 45: Increased Intracranial Pressure and Traumatic Brain Injury\r 317
1. Define elevated intracranial pressure.\r 317
2. What are the determinants of intracranial pressure?\r 317
3. How is intracranial pressure measured?\r 317
4. Summarize the conditions that commonly cause elevated intracranial pressure.\r 317
5. Describe the symptoms of increased intracranial pressure.\r 317
5. Describe the symptoms of increased intracranial pressure.\r 318
7. What are the determinants of cerebral perfusion pressure?\r 318
8. What is intracranial elastance? Why is it clinically significant?\r 318
9. How is cerebral blood flow regulated?\r 318
10. What is the goal of anesthetic care for patients with elevated intracranial pressure?\r 319
11. Can this goal be aided by preoperative interventions?\r 319
12. How is the goal of reduced intracranial volume achieved at induction of anesthesia?\r 320
13. How is intracranial pressure moderated during maintenance of anesthesia?\r 320
14. Is hyperventilation a reasonable strategy for long-term intracranial pressure management?\r 320
15. Which intravenous fluids are used during surgery to minimize intracranial pressure?\r 320
16. What are the effects of volatile anesthetics on cerebral blood flow?\r 321
17. How do neuromuscular blocking agents affect intracranial pressure?\r 321
18. Discuss strategies for controlling intracranial pressure at emergence from anesthesia.\r 321
19. If the previously mentioned measures fail to control intracranial pressure, what other measures are available?\r 322
20. What are the mechanisms behind traumatic brain injury?\r 322
21. What are the anesthetic goals in a patient with traumatic brain injury?\r 322
22. In a patient with traumatic head injury, how should fluid resuscitation be prioritized and what fluids are beneficial?\r 322
Suggested Readings\r 323
Chapter 46: Malignant Hyperthermia and Other Motor Diseases\r 324
1. What is malignant hyperthermia and its underlying defect? 324
2. What are the inheritance pattern and triggering agents for malignant hyperthermia? 324
3. Describe the cellular events, presentation, and metabolic abnormalities associated with malignant hyperthermia.\r 324
4. How is malignant hyperthermia treated? 324
5. How does dantrolene work? How is dantrolene prepared? 325
6. How is malignant hyperthermia susceptibility assessed in an individual with a positive family history or prior suggestive event?\r 325
7. What are the indications for muscle biopsy and halothane-caffeine contracture testing? 325
8. What is masseter muscle rigidity and what is its relation to malignant hypothermia? 325
9. Describe the preparation of an anesthetic machine and anesthetic for a patient with known malignant hypothermia susceptibility.\r 326
10. Should malignant hypothermia-susceptible patients be pretreated with dantrolene? 326
11. What patients are at risk for redeveloping symptoms of malignant hypothermia after treatment with dantrolene?\r 326
12. What drugs commonly administered intraoperatively are safe to use in malignant hyperthermia-susceptible patients.\r 326
13. Compare neuroleptic malignant syndrome with malignant hypothermia. 326
14. What are the muscular dystrophies and their underlying defect? 327
15. What are the most common muscular dystrophies and their clinical history? 327
16. Briefly review of forms of muscular dystrophy. 327
17. How do patients with muscular dystrophy respond to muscle relaxants and volatile anesthetics? 327
18. Are patients with muscular dystrophy at risk for malignant hyperthermia? 327
19. What is myotonic dystrophy? 328
20. How does myotonic dystrophy affect the cardiopulmonary system? 328
21. What are the important muscle relaxant considerations in patients with myotonic dystrophy? 328
22. What is myasthenia gravis? 328
23. Describe the clinical presentation of myasthenia gravis. 328
24. How is myasthenia gravis treated? What can lead to an exacerbation of symptoms? 328
25. What are some of the principal anesthetic concerns in the management of a myasthenic patient for any operative procedure? 328
26. Describe the altered responsiveness of myasthenic patients to muscle relaxants. 328
27. What is Lambert-Eaton myasthenic syndrome? Describe its symptoms, associations, and treatment. 329
28. Review the anesthetic concerns for a patient with Lambert-Eaton syndrome. 329
Suggested Readings\r 330
Chapter 47: Degenerative Neurologic Diseases and Neuropathies\r 331
1. What is amyotrophic lateral sclerosis and its anesthetic considerations?\r 331
2. Review the clinical manifestations of Guillain-Barré syndrome.\r 331
3. How is the autonomic nervous system affected in Guillain-Barré syndrome?\r 331
4. What are the major anesthetic considerations for patients with Guillain-Barré syndrome?\r 331
5. Review the pathophysiologic features of Parkinson's disease.\r 332
6. Describe the clinical manifestations of Parkinson's disease.\r 332
7. What are the effects of levodopa therapy, particularly on intravascular volume status?\r 332
8. Review the anesthetic considerations for a patient with Parkinson's disease.\r 332
9. What are the clinical signs and symptoms of Alzheimer's disease?\r 332
10. What is the most significant anesthetic problem associated with Alzheimer's disease?\r 332
11. What are the hallmark features of multiple sclerosis?\r 333
12. Do steroids have a role in the treatment of multiple sclerosis?\r 333
13. What factors have been associated with an exacerbation of multiple sclerosis?\r 333
14. Review some perioperative concerns for patients with multiple sclerosis. Are medications used for most general anesthetic safe?\r 333
15. Are local anesthetics especially toxic for patients with multiple sclerosis?\r 333
16. Are epidural and spinal anesthesias safe for patients with multiple sclerosis?\r 333
17. Are muscle relaxants safe in patients with multiple sclerosis?\r 334
18. Describe postpoliomyelitis syndrome.\r 334
19. What are the anesthetic considerations for patients with postpolio syndrome?\r 334
20. Review critical illness polyneuropathy and the patient subsets prone to developing it.\r 334
21. Describe the clinical features of critical illness polyneuropathy.\r 334
22. Review the anesthetic concerns in patients with critical illness polyneuropathy.\r 334
Suggested Readings\r 335
Chapter 48: Alcohol and Substance Abuse\r 336
1. How is alcohol absorbed and metabolized? 336
2. What are the acute and chronic effects of alcohol on the nervous system? 336
3. What are the effects of alcohol on the cardiovascular system? 336
4. How does alcohol affect the respiratory system? 336
5. How does alcohol affect the gastrointestinal and hepatobiliary systems? 337
6. Which nutritional deficiencies are seen in chronic alcohol users? 337
7. What are the effects of alcohol on inhalational anesthetics? 337
8. How does alcohol affect muscle relaxants? 337
9. Describe special considerations in the perioperative assessment of alcohol-abusing patients. 337
10. How should sober chronic alcohol abusers be anesthetized? 337
11. What are the signs and symptoms of alcohol withdrawal? 338
12. Review the differences between addiction, dependence, pseudoaddiction, and tolerance. 338
13. List complications of chronic opioid abuse. 338
14. Discuss perioperative problems associated with the chronic opioid abuser. 339
15. Describe the time frame and stages of opioid withdrawal. 339
16. What medications are used to stabilize and detoxify the withdrawing opioid patient? 339
17. To what arrhythmias are methadone-treated patients prone? 339
18. What are the various forms of cocaine and routes of administration? 339
19. How is cocaine metabolized and excreted? 339
20. What are the mechanism of action and physiologic effects of cocaine? 339
21. List the common signs and symptoms of acute cocaine intoxication. 340
22. What is the most life-threatening toxic side effect and its treatment? 340
23. List the signs and symptoms of cocaine withdrawal. 340
24. What are the anesthetic concerns in the acutely intoxicated cocaine user? 340
25. Can the nonacutely intoxicated patient who has used cocaine be safely anesthetized? 340
26. What is crystal methamphetamine and what are its properties? 341
27. What are the signs of symptoms of methamphetamine intoxication and withdrawal? 341
28. What is ecstasy and what are its mechanism of action and route of administration? 341
29. What are the cognitive, physical, and psychologic effects of ecstasy? 341
30. What is phencyclidine and what is its mechanism of action? 341
31. Discuss the physical and psychologic effects of phencyclidine. 341
32. How do you increase clearance of phencyclidine? 342
Suggested Readings\r 342
Chapter 49: Diabetes Mellitus\r 343
1. Describe the principal types of diabetes mellitus.\r 343
2. What is considered ideal (target) glucose control?\r 343
3. What comorbidities are frequently observed in patients with diabetes mellitus and to what significance?\r 343
4. What oral medications are currently used in type 2 diabetes?\r 343
5. What insulins are in current use?\r 344
6. Is there an advantage to the use of insulins that are in solution as opposed to insulin that is in a suspension?\r 345
7. Describe the role of insulin on glucose metabolism and the impact of stress.\r 345
8. Is there evidence that tight glucose control is beneficial in critically ill patients?\r 345
9. What are the complications of hyperglycemia in the perioperative setting?\r 345
10. What considerations are important during the preoperative evaluation?\r 345
11. What is the significance of autonomic neuropathy? How can it be assessed?\r 345
12. What preoperative laboratory tests are appropriate for the patient with diabetes?\r 346
13. Are there any signs that oral intubation may be difficult?\r 346
14. How should the patient with diabetes be prepared before surgery? Should all patients with diabetes receive insulin intraoperatively?\r 346
15. How do you make an insulin and glucose infusion?\r 347
16. How fast can the blood glucose be lowered in a markedly hyperglycemic patient?\r 347
17. Describe the postoperative management of the patient with diabetes.\r 347
18. How do you manage patients using subcutaneous insulin pumps?\r 347
19. What insulins are preferred for pump use?\r 348
20. Describe the management of patients with diabetes requiring urgent surgery.\r 348
21. Are regional anesthetics helpful in patients with insulin-dependent diabetes? Can epinephrine be added to local anesthetic solutions?\r 348
22. Is it possible to achieve continuous monitoring of glucose levels in the operating room and in the perioperative period?\r 349
Suggested Readings\r 349
Chapter 50: Nondiabetic Endocrine Disease\r 351
1. Describe four steps involved in thyroid hormone synthesis.\r 351
2. How much tri-iodothyronine and thyroxine are produced? What regulates their production?\r 351
3. List the common thyroid function tests and their use in assessment of thyroid disorders.\r 351
4. List common signs, symptoms, and causes of hypothyroidism.\r 352
5. Of the numerous manifestations of hypothyroidism, which are most important in relation to anesthesia?\r 352
6. How does hypothyroidism affect minimum alveolar concentration of anesthetic agents?\r 352
7. How is hypothyroidism treated?\r 352
8. Under what circumstances should elective surgery be delayed for a hypothyroid patient?\r 353
9. List common signs, symptoms, and causes of hyperthyroidism.\r 353
10. How is hyperthyroidism treated?\r 353
11. Which effects of hyperthyroidism are the most important with regard to anesthesia?\r 353
12. How is minimum alveolar concentration affected by hyperthyroidism?\r 353
13. Define thyrotoxicosis.\r 354
14. How is thyrotoxicosis treated?\r 354
15. What complications may occur after a surgical procedure involving the thyroid gland?\r 354
16. Describe the functions and regulation of the adrenal gland.\r 354
17. What is a pheochromocytoma?\r 354
18. How much cortisol is produced by the adrenal cortex?\r 355
19. What is the most common cause of hypothalamic-pituitary-adrenal axis disruption?\r 355
20. What is an addisonian crisis?\r 355
21. How is an addisonian crisis treated?\r 355
22. How do exogenous steroids compare to cortisol?\r 355
23. Is perioperative stress steroid supplementation for patients on steroid therapy necessary?\r 356
24. If supplemental corticosteroids are to be administered perioperatively, how much should be given?\r 356
25. Review calcium homeostasis.\r 357
Suggested Readings 357
Chapter 51: Obesity and Sleep Apnea\r 358
1. Define obesity. 358
2. Discuss the cardiovascular considerations in the obese patient. 358
3. Review some pulmonary and respiratory considerations in the obese patient. 358
4. What are the gastrointestinal and hepatic changes seen in obese patients? 358
5. Discuss the pharmacokinetic changes found in the obese patient. 359
6. Discuss the appropriate preoperative assessment of this population. 359
7. What are the advantages or disadvantages of offering regional anesthesia to the obese patient? 360
8. Review the challenges in monitoring these patients. 360
9. Discuss positioning the obese patient. 360
10. What extubation criteria would you use for the obese patient? 361
11. Review special concerns for pregnant women and children with obesity. 361
12. What is obstructive sleep apnea? 361
13. Is obstructive sleep apnea common? 361
14. Which techniques can be used to identify patients with obstructive sleep apnea? 361
15. What procedures are performed to aid in weight loss? 362
16. Is bariatric surgery used in the pediatric population? 362
Suggested Readings\r 363
Chapter 52: Allergic Reactions\r 364
1. Review the four types of immune-mediated allergic reactions and their mechanisms. 364
2. What is meant by anaphylaxis? 364
3. What is an anaphylactoid reaction? 364
4. What are the common causes of anaphylaxis in the operating room? 364
5. Review the issues concerning allergic reactions to muscle relaxants. 365
6. Should a penicillin-allergic patient receive cephalosporins? 365
7. What is latex? 365
8. What demographic groups are at risk for latex allergy? 366
9. Has the incidence of latex allergy increased? 366
10. How is a latex allergy developed? 366
11. How should an operating room be prepared for a latex-allergic patient? 366
12. How should any allergic reaction be treated? 366
13. Should patients with a prior history of allergic reaction be pretreated with histamine blockers or corticosteroids?\r 367
14. What tests are available to diagnose and characterize a prior allergic reaction? Should patients having a prior anaphylactic reaction be tested?\r 367
15. What are the implications of occupational latex exposure? 367
Suggested Readings\r 368
Chapter 53: Herbal supplements\r 369
1. How does the Federal Food and Drug Administration regulate herbal medications?\r 369
2. What is the incidence of herbal medicine use in the surgical patient population? What are commonly used herbal medicines?\r 369
3. How can commonly used herbal medicines adversely affect the surgical patient?\r 369
4. What are the risks involved in consuming ephedra?\r 369
5. Review the effects of vitamin E.\r 370
6. What are the reported benefits and adverse effects of fish oil?\r 370
7. What are the beneficial properties and side effects of kava and valerian?\r 370
8. Review the alleged benefits and risks of ginkgo.\r 370
9. What are the alleged benefits and risks of ginseng?\r 370
10. Review the alleged benefits and risks of garlic.\r 371
11. What about ginger?\r 371
12. Review the properties and effects of feverfew.\r 371
13. Review the effects of St. John's wort.\r 371
14. Since these medications appear to impair coagulation, how can their effect be evaluated clinically?\r 371
15. What are current recommendations regarding discontinuing use of herbal medications before surgery?\r 372
Suggested Readings\r 372
Section VII: Special Anesthetic Considerations\r 373
Chapter 54: Trauma\r 373
1. Review conditions that predispose trauma patients to increased anesthetic risk.\r 373
2. Outline the initial management of an unconscious, hypotensive patient.\r 373
3. What is the significance of Glasgow Coma Scale (GCS) score of 8?\r 373
4. Describe the changes in vital signs associated with progressive blood loss.\r 374
5. What is the initial therapy for hypovolemic shock?\r 374
6. Why is rapid-sequence induction preferred for airway management in trauma patients?\r 374
7. How does an uncleared cervical spine modify the approach to the airway?\r 374
8. Which induction agents are best for trauma patients?\r 375
9. Why are trauma patients hypothermic?\r 375
10. What is meant by damage control surgery?\r 375
11. How have damage control concepts been applied in orthopedic injuries?\r 375
12. What is the universal theory of the compartment syndrome?\r 376
13. How does cardiac tamponade present? What is Beck's triad? How should anesthesia be managed in a patient with tamponade?\r 376
14. What is the significance, clinical presentation, and treatment of a tension pneumothorax?\r 376
15. What is the abdominal compartment syndrome?\r 376
16. What challenges do spinal cord-injured patients pose?\r 377
17. Should succinylcholine be used in patients with spinal cord injury?\r 377
18. Describe the presentation of a myocardial contusion.\r 377
19. Describe the management of a pregnant trauma patient.\r 378
20. Review concerns for the elderly trauma patient.\r 378
21. How might a bronchial or tracheal tear present? What are alternatives for managing ventilation during operative repair?\r 378
22. How is air embolism diagnosed and managed?\r 379
Suggested Readings\r 379
Chapter 55: The Burned Patient\r 380
1. Who gets burned? 380
2. What are the three main factors that correlate with increased mortality with burn injury? 380
3. What are the consequences of skin damage? 380
4. How are burns classified? 380
5. What systems are affected by burns? 380
6. How is the cardiovascular system affected? 381
7. How is the respiratory system affected? 381
8. What is inhalation injury? 381
9. What is the best way to treat inhalation injury? 381
10. What are the features of carbon monoxide poisoning? 381
11. How do burns affect the gastrointestinal tract? 382
12. How is renal function affected? 382
13. How is myoglobinuria treated? 382
14. How is hepatic function affected? 382
15. Are drug responses altered? 382
16. What is the endocrine response to a burn? 382
17. What are the hematologic complications that occur with burns? 383
18. What are the immunologic complications that occur with burns? 383
19. How are patients with burns resuscitated? 383
20. How do you calculate the percent of total body surface burned? 384
21. Early surgical burn wound intervention has recently been shown to be one of the major reasons for the improved outcome in burn patients. What are the fourcategories of operations that are common for the burn-injured patient?\r 384
22. What is important in the preoperative history? 384
23. What should the anesthesiologist look for on the preoperative physical examination? 384
24. What preoperative tests are required before induction? 385
25. What monitors are needed to give a safe anesthetic? 385
26. How must the use of muscle relaxants be modified for a burned patient? 385
27. What techniques have been used to markedly reduce blood loss in excisional burn surgery? 385
28. What induction drugs are good for burn patients? 385
29. Describe specific features of electrical burns. 386
Suggested Readings\r 386
Chapter 56: Neonatal Anesthesia\r 387
1. Why are neonates and preterm infants at increased anesthetic risk?\r 387
2. Do neonates have normal renal function?\r 387
3. Why is it important to provide infants with exogenous glucose?\r 387
4. What are the differences in the gastrointestinal or hepatic function of neonates?\r 387
5. What is retinopathy of prematurity?\r 388
6. How is volume status assessed in neonates?\r 388
7. What problems are common in premature infants?\r 388
8. What special preparations are needed before anesthetizing a neonate?\r 389
9. What intraoperative problems are common in small infants?\r 389
10. What are the most common neonatal emergencies?\r 390
11. Discuss the incidence and anesthetic implications of congenital diaphragmatic hernia.\r 390
12. Which congenital anomalies are associated with tracheoesophageal fistula?\r 390
13. How should patients with tracheoesophageal fistula be managed?\r 391
14. What are the differences between omphalocele and gastroschisis?\r 391
15. How are patients with omphalocele or gastroschisis managed in the perioperative period?\r 391
16. How does pyloric stenosis present?\r 392
17. Discuss the perioperative management of patients with pyloric stenosis.\r 392
18. Are there any benefits to specific ventilator strategies in neonates?\r 392
19. At what age should the former premature infant be allowed to go home after surgery?\r 392
20. Does regional anesthesia protect the patient from developing postoperative anesthesia?\r 393
Suggested Readings\r 393
Chapter 57: Pediatric Anesthesia\r 394
1. What are the differences between the adult and pediatric airways? 394
2. Are there any differences in the adult and pediatric pulmonary systems? 394
3. How does the cardiovascular system differ in a child? 394
4. What are normal vital signs in children? 395
5. When should a child be premedicated? Which drugs are commonly used? 395
6. Should parents be allowed to accompany their children to the operating room? 395
7. What medications are available for premedication? 396
8. Describe the commonly used induction techniques in children. 396
9. How does the presence of a left-to-right shunt affect inhalational induction and intravenous induction? 397
10. How about a right-to-left shunt? 397
11. What other special precautions need to be taken in a child with heart disease? 397
12. How is an endotracheal tube of appropriate size chosen? 398
13. Can cuffed endotracheal tubes be used in children and laryngeal mask airways? 398
14. How is an appropriate-size laryngeal mask airway chosen? 399
15. How does the pharmacology of commonly used anesthetic drugs differ in children? 399
16. How is perioperative fluid managed in children? 399
17. What is the most common replacement fluid used in children? Why? 399
18. What is the estimated blood volume in children? 400
19. How is acceptable blood loss calculated? 400
20. How do the manifestations of hypovolemia differ in children? 400
21. What are the systemic responses to blood loss? 400
22. What is the most common type of regional anesthesia performed in children? Which local anesthetic is used and what dose is appropriate?\r 400
23. Describe the common postoperative complications. 401
24. What is the significance of masseter muscle rigidity? 402
25. Should children with upper respiratory infection receive general anesthesia? 402
26. What are the implications of sleep-disordered breathing in children? 403
Suggested Readings\r 403
Chapter 58: Congenital Heart Disease\r 404
1. What is the incidence of congenital heart disease? 404
2. What causes pulmonary hypertension in association with congenital heart disease? 404
3. Describe the pulmonary vascular effects of left-to-right shunts. 404
4. How do left-to-right shunts affect the heart? 404
5. What is a pulmonary hypertensive crisis? How is it treated? 405
6. How does PAH affect perioperative risk? 405
7. How are shunts calculated? 405
8. How are pulmonary vascular resistance and systemic vascular resistance calculated? 405
9. Do anesthetic drugs affect pulmonary vascular resistance? 406
10. What causes cyanosis in congenital heart disease? 406
11. Describe the clinical problems associated with cyanotic congenital heart disease. 406
12. What is tetralogy of Fallot? What are tet spells? 406
13. How are tet spells treated? 407
14. What effects do anesthetic agents have on shunting in patients with cyanotic congenital heart disease? 407
15. What is the main problem associated with ventricular obstructive lesions? 408
16. What is a ductal-dependent lesion? 408
17. Why can oxygen be dangerous in patients with single ventricle physiology? 408
18. What is the best anesthetic technique for patients with congenital heart disease? 409
19. How soon does cardiac function return to normal after surgical repair? 409
20. What is subacute bacterial endocarditis and how can it be prevented? 409
Suggested Readings\r 410
Chapter 59: Fundamentals of Obstetric Anesthesia\r 411
1. What are the cardiovascular adaptations to pregnancy?\r 411
2. What hematologic changes accompany pregnancy?\r 411
3. What pulmonary and respiratory changes occur with pregnancy?\r 412
4. What is a normal arterial blood gas in a pregnant patient?\r 413
5. What gastrointestinal changes occur during pregnancy?\r 413
6. What renal changes are associated with pregnancy?\r 413
7. What changes occur in the central nervous system of pregnant patients?\r 413
8. What hepatic alterations occur with pregnancy?\r 413
9. What pregnancy-related changes occur to plasma proteins?\r 413
10. What is the uterine blood flow at term?\r 414
11. What is aortocaval compression syndrome? How is it treated?\r 414
12. What are the most important physiologic changes during labor?\r 414
13. How quickly do the physiologic alterations of pregnancy return to normal after delivery?\r 414
14. Discuss the pathways involved in labor pain.\r 414
15. What are the three stages of labor?\r 414
16. Describe the anatomy of the placenta and umbilical cord.\r 415
17. What factors influence uteroplacental perfusion?\r 415
18. How should hypotension associated with spinal anesthesia be treated in a cesarean section or laboring patient?\r 415
19. What is the role of intravenous fluid preloading before regional anesthesia for cesarean delivery?\r 415
20. How are drugs and other substances transported across the placenta?\r 415
21. What methods are used to evaluate fetal well-being during labor?\r 416
22. What is the significance of fetal heart rate decelerations?\r 416
23. What is the Apgar score?\r 417
24. Describe the management of the pregnant patient undergoing nonobstetric surgery.\r 417
Suggested Readings\r 418
Chapter 60: Obstetric Analgesia and Anesthesia\r 419
1. What are the most commonly used parenteral opioids for labor analgesia? Which side effects are of special concern to the parturient?\r 419
2. What advantages does PCA offer over conventional intermittent bolus dosing?\r 419
3. Discuss the benefits of epidural analgesia for labor and delivery.\r 420
4. What are the indications and contraindications for epidural analgesia during labor and delivery?\r 420
5. Discuss the importance of a test dose and suggest an epidural test dose regimen. When and why is this regimen used?\r 420
6. What are the characteristics of the ideal local anesthetic for use in labor? Discuss the three most common local anesthetics used in obstetric anesthesia.How does epinephrine affect the action of local anesthetics?\r 420
7. Describe the properties and benefits of ropivacaine in obstetric anesthesia.\r 421
8. Name three methods for administering epidural analgesia. State the concerns associated with each.\r 421
9. Discuss the complications of epidural anesthesia and their treatments.\r 421
10. Explain the mechanism of action of intrathecal and epidural opioids. What effect do they have on pain perception, sympathetic tone, sensation, andmovement?\r 422
11. What opioids are used to provide spinal and epidural analgesia during labor? Name their most common side effects. Do they provide adequate analgesia forlabor and delivery when used alone?\r 422
12. Is there a cause-and-effect relationship between epidural anesthesia and prolonged labor or operative delivery?\r 423
13. Relate the advantages and disadvantages of spinal anesthesia for cesarean section. Which drugs are frequently used in the technique?\r 423
14. What are the advantages and disadvantages of cesarean section with epidural anesthesia vs. spinal anesthesia? What are the most commonly used localanesthetics?\r 423
15. How is combined spinal/epidural anesthesia performed? What are its advantages?\r 424
16. List the indications for general anesthesia for cesarean section.\r 424
17. What concerns the practitioner when administering general anesthesia for cesarean section? How is it performed?\r 425
Suggested Readings\r 425
Chapter 61: High-Risk Obstetrics\r 426
1. What is a high-risk pregnancy? 426
2. Describe the hypertensive disorders of pregnancy. 426
3. What causes preeclampsia? 426
4. What clinical findings are present in preeclampsia? 426
5. What conditions contribute to maternal and perinatal mortality in preeclampsia? 427
6. What is HELLP syndrome? 427
7. How is preeclampsia managed? 427
8. What are the indications for invasive monitoring? 428
9. What potential problems may occur in patients receiving magnesium sulfate? 428
10. What are the anesthetic considerations in patients with preeclampsia? 428
11. What is eclampsia? 428
12. How are eclamptic seizures treated? 428
13. Discuss preterm labor. 429
14. What is the treatment of preterm labor? 429
15. Discuss antepartum hemorrhage. 429
16. What is placenta previa? 429
17. What is postpartum uterine atony? How is it managed? 429
18. Discuss diabetes and its anesthetic considerations. 430
19. What causes disseminated intravascular coagulation in obstetric patients? 430
20. What types of renal diseases are most frequently seen in obstetric patients? 430
21. How is anesthetic management affected in patients with renal disease? 430
22. Which cardiac disease most commonly complicates pregnancy? 430
23. How is congenital heart disease managed during pregnancy? 430
Suggested Readings\r 431
Chapter 62: Geriatric Anesthesia\r 432
1. What is geriatric anesthesia and why is it important? 432
2. What are the overriding characteristics and principles governing age-related physiologic changes as they relate to anesthesia in geriatrics?\r 432
3. Review age-related changes to the cardiovascular system. 432
4. Describe age-related changes to the pulmonary system. 432
5. Discuss age-related changes to the nervous system. 433
6. How is baseline renal function impaired in the elderly? 433
7. How does serum creatinine change with aging? 433
8. How do changes in renal function affect anesthetic management? 433
9. How is liver function affected by aging? What are some anesthetic implications? 433
10. In what ways does body composition change with aging? 433
11. How do these changes in body composition affect anesthetic management? 433
12. Why are these patients prone to hypothermia? 434
13. What is the affect of aging on anesthetic requirements? 434
14. How are the pharmacokinetics and quality of spinal anesthesia affected by age? 434
15. Review the dynamics of epidural anesthesia change with age. 434
16. Do all elderly patients need extensive preoperative testing? 434
17. Is there a difference in outcome when performing regional vs. general anesthesia in the elderly? 434
18. What are the most common postoperative complications in elderly patients? 434
19. What is postoperative cognitive dysfunction and what are its risk factors? 435
20. What are the implications of postoperative cognitive dysfunction on patient mortality? 435
21. What can anesthesiologists do to limit postoperative cognitive dysfunction in at-risk patients? 435
22. Is age itself a predictor of perioperative mortality in the elderly? 435
Suggested Readings\r 436
Chapter 63: Sedation and Anesthesia Outside the Operating Room\r 437
1. What procedures outside the operating room require sedation or general anesthesia?\r 437
2. What equipment and standards are necessary for safely conducting an anesthetic outside the operating room?\r 437
3. What monitoring is necessary for administration of any anesthetic, regardless of whether it is in the operating room or elsewhere?\r 438
4. How might anesthesiologists be involved in establishing standards for sedation and analgesia conducted by nonanesthesiologists?\r 438
5. Explain conscious sedation and the continuum of depth of anesthesia.\r 438
6. What are some of the requirements for the administration of moderate sedation by nonanesthesiologists?\r 439
7. Is it advisable to have nonanesthesiogists administer deep sedation?\r 440
8. What is dexmedetomidine and what role does it serve in moderate sedation?\r 440
9. Why is soluble contrast media important to anesthesiologists?\r 440
10. Besides anaphylaxis, what is a major risk with regard to contrast media?\r 440
11. Are there specific steps that can be taken to avoid and treat contrast media reactions?\r 440
12. What are some of the more common manifestations of the reactions to soluble contrast media?\r 441
13. How is radiation exposure measured?\r 441
14. How can anesthesiologists protect themselves from radiation exposure?\r 442
15. Define the unique problems associated with providing an anesthetic in the magnetic resonance imaging suite.\r 442
16. What modifications in the anesthesia machine, ventilator, and monitoring equipment must be made to provide an anesthetic in the magnetic resonanceimaging suite?\r 443
Suggested Readings\r 444
Chapter 64: Pacemakers and Internal Cardioverter Defibrillators\r 445
1. Explain the letters in the NBG coding system for pacemakers.\r 445
2. What does AOO, VOO, or DOO mode mean?\r 445
3. What is the result of VVI pacing?\r 445
4. What is the result of DDI pacing?\r 445
5. What does DDD pacing mean?\r 446
6. Describe the difference between a unipolar and bipolar pacemaker.\r 446
7. What is an implantable cardioverter defibrillator?\r 446
8. What are common indications for permanent pacing?\r 446
9. What are some common indications for implantable cardioverter defibrillator implantation?\r 446
10. What is the effect of placing a magnet over a device?\r 446
11. Do patients with devices need to avoid microwave ovens or other hospital electronics?\r 447
12. Are there other responses to electromagnetic interference by devices?\r 447
13. Can device leads be dislodged?\r 447
14. Can device leads be damaged with intravascular access?\r 447
15. Do typical anesthetics and intraoperative medications affect the ability of implantable cardioverter defibrillators to defibrillate patients?\r 447
16. Can changes in the patient's clinical status affect pacemaker function?\r 447
17. Can programming patients to a different mode lead to hemodynamic compromise?\r 448
18. Should patients with pacemakers or defibrillators be evaluated before and after surgery?\r 448
19. Are there any precautions that can decrease the effect of electrocautery on devices?\r 448
20. If no underlying rhythm is seen when a pacemaker rate is rapidly decreased, does that mean that the patient is pacemaker dependent?\r 448
21. No pacer spikes are seen on the monitoring system with your patient with a pacemaker. Does this mean that the pacemaker is not functioningproperly?\r 448
22. Does failure of a pacemaker stimulus to capture the heart necessarily imply pacemaker malfunction?\r 448
23. If a pacemaker stimulus is superimposed on a native complex, is the pacemaker necessarily malfunctioning?\r 449
Suggested Readings\r 450
Section VIII: Regional Anesthesia\r 451
Chapter 65: Spinal Anesthesia\r 451
1. What are the advantages of spinal anesthesia over general anesthesia?\r 451
2. What are the usual doses of common local anesthetics used in spinal anesthesia and the duration of effect?\r 451
3. Where are the principal sites of effect of spinal local anesthetics?\r 451
4. What factors determine the termination of effect?\r 451
5. Describe the factors involved in distribution (and extent) of conduction blockade.\r 452
6. At what lumbar levels should a spinal anesthetic be administered? What structures are crossed when performing a spinal block?\r 452
7. What are the most common complications of spinal anesthesia?\r 452
8. What are the physiologic changes and risk factors found with subarachnoid block-associated hypotension?\r 452
9. What are the etiology and risk factors for subarachnoid block-associated bradycardia?\r 453
10. Why are patients who have received spinal anesthetics especially sensitive to sedative medications? What is deafferentation?\r 453
11. Review the clinical features of total spinal anesthesia.\r 453
12. If a patient has a cardiac arrest while having a subarachnoid block, how should resuscitative measures differ from standard advanced cardiac life supportprotocols?\r 453
13. What are the clinical features of a postdural puncture headache and the treatment?\r 453
14. What is the risk of neurologic injury after spinal anesthesia?\r 454
15. What is the effect of spinal anesthesia on temperature regulation?\r 454
16. What are contraindications to spinal anesthesia?\r 454
17. Review the current recommendations for administering regional anesthesia to patients with altered coagulation caused by medications.\r 454
18. Should spinal (or epidural) anesthesia be performed when unfractionated heparin is administered?\r 454
19. Should spinal (or epidural) anesthesia be performed when low-molecular-weight heparin is administered?\r 455
20. What are the sites of action, benefits, and side effects of intrathecal opioids?\r 455
21. What is transient neurologic syndrome and its cause?\r 455
22. Since lidocaine is associated with TNS, what would be an appropriate local anesthetic selection for an ambulatory procedure?\r 456
23. Can continuous spinal anesthesia be performed?\r 456
Suggested Readings\r 457
Chapter 66: Epidural Analgesia and Anesthesia\r 458
1. Where is the epidural space? Describe the relevant anatomy. 458
2. Differentiate between a spinal and an epidural anesthetic. 458
3. How is caudal anesthesia related to epidural anesthesia? When is it used? 458
4. What are the advantages of using epidural anesthesia vs. general anesthesia? 459
5. What are the disadvantages of epidural compared with general anesthesia? 459
6. What are the advantages of epidural anesthesia over spinal anesthesia? 459
7. What are the disadvantages of epidural compared with spinal anesthesia? 459
8. What factors should the anesthesiologist address in the preoperative assessment before performing an epidural anesthetic? 459
9. Describe the technique for performing a lumbar epidural anesthetic. 460
10. Are there any contraindications to epidural anesthesia? 460
11. What are the potential complications of epidural anesthesia? Can they be anticipated or prevented? 461
12. What physiologic changes should be expected after successful initiation of an epidural anesthetic? 462
13. How does one choose which local anesthetic to use? 462
14. Why is epinephrine sometimes combined with the local anesthetic? Should it be included in all cases? 463
15. When should opioids be included in the epidural anesthetic? 463
16. Why can some patients with epidural blocks move around and even walk, whereas others have a dense motor block?\r 463
17. When is analgesia preferable to anesthesia? 464
18. How do you determine the level of anesthesia needed for different types of surgeries? What is a segmental block? When is it used?\r 464
19. How do you determine the amount of local anesthetic solution used for different procedures? What factors affect spread in the epidural space?\r 464
20. What is a combined spinal-epidural anesthetic? Why use both? 464
21. What is a combined epidural-general anesthetic? Why give the patient two anesthetics? 464
22. What should the anesthesiologist ask the patient postoperatively after an epidural anesthetic? 465
Suggested Readings\r 465
Chapter 67: Peripheral Nerve Blocks\r 466
1. What are the advantages of peripheral nerve blocks? 466
2. What basic principles should be followed to ensure a safe and successful peripheral nerve block? 466
3. What are the risks of performing a peripheral nerve block? 466
4. How can the risks from a peripheral nerve block be minimized? 466
5. Describe a good technique for advancing the needle and injecting the local anesthetic solution. 467
6. How are peripheral nerves localized? 467
7. Is one technique to localize nerves better or safer than any other? 467
8. When using ultrasound guidance, what is the difference between an in-plane and an out of-plane approach? 467
9. Review upper-extremity nerve blocks, including their indications, limitations, and complications. 467
10. What is the Bier block and how is it performed? 467
11. How is local anesthetic toxicity avoided when performing a Bier block? 468
12. What peripheral nerve block can be performed for surgery of the lower extremity? 469
13. What peripheral nerve block can be used to provide anesthesia or analgesia to the chest wall? 471
14. What peripheral nerve block can be used to provide anesthesia or analgesia to the anterior abdominal wall?\r 471
Suggested Readings\r 471
Section IX: Anesthetic Considerations in Selected Surgical Procedures\r 473
Chapter 68: Heart Transplantation\r 473
1. What are the common diagnoses indicating heart transplantation in adults?\r 473
2. What is the bridge-to-transplant management of patients with heart failure?\r 473
3. What are the criteria for the selection of transplant recipients?\r 473
4. What are the priority criteria for the selection of the recipients?\r 473
5. What is the significance of peak VO2 measurement?\r 474
6. What is the role of peak VO2 in the decision-making process of heart transplantation?\r 474
7. What are the absolute contraindications for the selection of the recipients?\r 474
8. What are the criteria for donor selection?\r 474
9. How is anesthesia managed for organ harvesting?\r 474
10. How is the heart harvested and preserved for transplantation?\r 475
11. In order of increasing acuity, review the physical status of patients awaiting heart transplantation.\r 475
12. What are the hemodynamic characteristics of the heart of the recipients?\r 475
13. Describe an appropriate anesthetic induction for patients with heart failure.\r 475
14. How is anesthesia maintained for heart transplantation?\r 475
15. What monitors should be used for heart transplantation?\r 476
16. Are there specific preparations for cardiopulmonary bypass?\r 476
17. Describe the etiology of coagulation disorders in these patients.\r 476
18. What antifibrinolytic agents can be used to decrease bleeding?\r 476
19. What preparation should be made before termination of cardiopulmonary bypass?\r 477
20. What is the implication of autonomic denervation of the transplanted heart?\r 477
21. What is the cause of the immediate left ventricular dysfunction after cardiopulmonary bypass?\r 477
22. What is the cause of right ventricular failure after cardiopulmonary bypass?\r 477
23. How can right ventricular function be evaluated during the surgery?\r 478
24. What are the treatment options for right ventricular failure?\r 478
25. What is the advantage of nitric oxide in the management of heart transplantation?\r 478
26. What are the side effects of administration of nitric oxide?\r 478
27. What are the concerns in anesthetic management of post-heart transplant patients for noncardiac surgery?\r 478
Suggested Readings\r 479
Chapter 69: Liver Transplantation\r 480
1. What is the Model for End-stage Liver Disease MELD? 480
2. Describe some indications and contraindications for liver transplantation. 480
3. How does the cardiovascular physiology of a patient with end-stage liver disease differ from that of a normal patient?\r 480
4. What are some preanesthetic considerations in a liver transplant patient? 480
5. What is the significance of portal pulmonary hypertension? How are these patients managed in the pretransplant period?\r 482
6. What are the concerns before anesthetic induction in the patient with end-stage liver disease? 482
7. Describe the three stages of liver transplantation. 483
8. What is the role of venovenous bypass? Are there any alternatives? 483
9. List some of the anesthetic concerns during the preanhepatic (dissection) phase. 483
10. What are some anesthetic concerns that arise during stage 2, the anhepatic phase? 484
11. Define reperfusion syndrome. What are its clinical implications? 484
12. Describe some of the major anesthetic management issues during the reperfusion stage (stage 3). 485
13. What are indicators of graft function during stage 3? 486
Suggested Readings\r 486
Chapter 70: Cardiopulmonary Bypass\r 487
1. What are the main functions of a cardiopulmonary bypass circuit?\r 487
2. What are the basic components of the cardiopulmonary bypass circuit?\r 487
3. Define the levels of hypothermia. What are adverse effects of hypothermia?\r 487
4. Why is hypothermia used on cardiopulmonary bypass?\r 487
5. Discuss the common cannulation sites for bypass.\r 487
6. What are the basic anesthetic techniques used in cardiopulmonary bypass cases?\r 488
7. List the two basic types of oxygenators.\r 488
8. What is meant by pump prime? What is the usual hemodynamic response to initiating bypass?\r 488
9. Why is systemic anticoagulation necessary?\r 488
10. How is the adequacy of anticoagulation measured before and during bypass?\r 488
11. What must be ascertained before placing the patient on cardiopulmonary bypass?\r 489
12. Why is a left ventricular vent used?\r 489
13. What are the characteristics of cardioplegia?\r 489
14. Discuss myocardial protection during cardiopulmonary bypass. What elements should be in place to optimize myocardial protection?\r 489
15. What is the function of an aortic cross-clamp?\r 489
16. Review the physiologic responses to cardiopulmonary bypass.\r 490
17. What are the pH-stat and -stat methods of blood gas measurement?\r 490
18. Develop an appropriate checklist for discontinuing bypass.\r 490
19. How is the heparin effect reversed? What are potential complications?\r 490
20. Why is cardiac pacing frequently useful after bypass?\r 490
21. What are some therapies for the patient with impaired cardiac performance or difficulty weaning from cardiopulmonary bypass?\r 491
22. Review the central nervous system complications of cardiopulmonary bypass.\r 491
23. What might be done to decrease the incidence of such complications?\r 491
Suggested Readings\r 492
Chapter 71: Lung Isolation Techniques\r 493
1. What are the indications for lung isolation?\r 493
2. How can lung isolation be achieved while maintaining one-lung ventilation?\r 493
3. How do you choose the appropriate size double-lumen endotracheal tube?\r 493
4. How is the right main stem bronchus different from the left and how does this affect right-sided double-lumen endotracheal tube design?\r 494
5. Describe the placement and positioning of double-lumen endotracheal tubes.\r 495
6. What complications may be caused by double-lumen endotracheal tubes?\r 495
7. Name three methods of bronchial blockade.\r 495
8. Describe the Univent tube.\r 495
9. What are the advantages of using a Univent tube?\r 495
10. What are the advantages of a double-lumen endotracheal tube?\r 496
11. Describe the placement and positioning of a Univent tube.\r 496
12. What complications can occur with the Univent tube?\r 496
13. Describe the wire-guided endobronchial blocker.\r 496
14. What are the advantages of the wire-guided endobronchial blocker?\r 496
15. How can the Fogarty embolectomy catheter be used as a bronchial blocker?\r 496
16. What tubes or bronchial blockers would you select for single-lung ventilation in children and adults?\r 497
17. What are the standard ventilator settings for one-lung ventilation?\r 497
18. Which volatile anesthetic agent would you use for single-lung ventilation?\r 498
19. What pulmonary changes occur with one-lung ventilation?\r 498
20. How should you manage hypoxia during one-lung ventilation?\r 498
Suggested Readings\r 499
Chapter 72: Somatosensory-Evoked Potentials and Spinal Surgery\r 500
1. What are somatosensory-evoked potentials? 500
2. How are somatosensory-evoked potentials generated? 500
3. What major peripheral nerves are most commonly stimulated? 500
4. Trace the neurosensory pathway from the peripheral nerves to the cerebral cortex. 500
5. At what points along the neurosensory pathway are somatosensory-evoked potentials most commonly recorded? 500
6. Describe the characteristics of the somatosensory-evoked potential waveform. 500
7. Name several characteristic peaks important for the evaluation of somatosensory-evoked potentials. 501
8. What is the central somatosensory conduction time? 501
9. What are the indications for intraoperative use of somatosensory-evoked potential monitoring? 502
10. What constitutes a significant change in the somatosensory-evoked potential? 502
11. Summarize the effects of anesthetic agents on the amplitude and latency of somatosensory-evoked potentials.\r 502
12. What is the take-home message of the effects of anesthetic agents on somatosensory-evoked potentials? 503
13. What other physiologic variables can alter somatosensory-evoked potentials? 503
14. If somatosensory-evoked potentials change significantly, what can the anesthesiologist and surgeon do to decrease the insult to the monitorednerves?\r 504
15. Despite normal somatosensory-evoked potentials, can patients awaken with neurologic deficits? 504
Suggested Readings\r 504
Chapter 73: Anesthesia for Craniotomy\r 505
1. Are there particular anesthetic problems associated with intracranial surgery?\r 505
2. How is the anesthetic requirement different in the brain and related structures?\r 505
3. Should monitoring be different during a craniotomy?\r 505
4. Discuss the considerations for fluid administration during craniotomy.\r 506
5. When are measures for brain protection required?\r 506
6. How can the brain be protected?\r 506
7. How is the choice of anesthetic agent made?\r 507
8. What are the concerns for patient positioning during a craniotomy?\r 507
9. Why do some patients awaken slowly after a craniotomy?\r 508
10. What anesthesia problems are unique to surgery on the intracranial blood vessels?\r 508
11. Are there special anesthetic problems associated with brain tumors?\r 509
12. Are there other anesthetic concerns during craniotomies?\r 509
Suggested Readings\r 510
Chapter 74: Minimally Invasive Surgery\r 511
1. What are the origins of modern laparoscopic surgery?\r 511
2. What are some currently practiced laparoscopic, thoracoscopic, or endoscopic procedures?\r 511
3. Are there any contraindications for laparoscopic procedures?\r 511
4. What are the benefits of laparoscopy when compared with open procedures?\r 512
5. Why has carbon dioxide become the insufflation gas of choice during laparoscopy?\r 512
6. How does carbon dioxide insufflation affect PaCO2?\r 513
7. How does patient positioning affect hemodynamics and pulmonary function during laparoscopy?\r 513
8. What is considered a safe increase in intra-abdominal pressure?\r 513
9. Describe pulmonary changes associated with pneumoperitoneum.\r 514
10. What effect does the intra-abdominal pressure increase have on perfusion of intra-abdominal organs?\r 514
11. What are the neurohumoral responses associated with laparoscopy?\r 515
12. Should nitrous oxide be used as an anesthetic adjuvant during laparoscopy?\r 515
13. What anesthetic techniques can be used for minimally invasive surgery?\r 515
14. Can laparoscopy be performed on children or pregnant women?\r 516
15. What complications are associated with laparoscopic surgery and carbon dioxide pneumoperitoneum?\r 516
Suggested Readings\r 517
Chapter 75: Laser Surgery and Operating Room Fires\r 518
1. What is a laser? 518
2. What makes lasers behave differently from each other? 518
3. What are the hazards of lasers? 519
4. What are some unique airway considerations for the patient having laser surgery of the airway? 519
5. Describe ventilation techniques commonly encountered during airway laser surgery 519
6. What are the three essential components necessary to create an operating room fire? 520
7. What are high-risk procedures for operating room fires? 520
8. What strategies can reduce the incidence of airway fires? 520
9. What are signs that a fire has occurred? 520
10. Should an airway fire occur, what are the recommended practices for its management? 520
11. Are there additional recommendations for a fire not involving the airway? 521
Suggested Readings\r 521
Chapter 76: Electroconvulsive Therapy\r 522
1. What are the major indications for electroconvulsive therapy treatment? 522
2. What are the downsides of antidepressant medication? 522
3. What are the proposed mechanisms by which electroconvulsive therapy is effective? 522
4. Has electroconvulsive therapy always been considered a good treatment for depression? 522
5. How safe is electroconvulsive therapy? 522
6. What is the physiologic response to electroconvulsive therapy? 522
7. What patients are at increased risk for complications after electroconvulsive therapy? 523
8. What type of preoperative evaluation is necessary before electroconvulsive therapy treatment? 523
9. Describe the technique of electroconvulsive therapy, including appropriate monitors and medications. 523
10. What additional medications are used to address hypertension and tachycardia? 524
11. What is an optimal seizure duration? 524
12. What can be done to prolong a seizure of inadequate duration or terminate a prolonged seizure? 525
13. How many electroconvulsive therapy treatments are usually necessary? 525
14. What are some of the adverse effects of electroconvulsive therapy? 525
15. Is electroconvulsive therapy curative? 525
Suggested Readings\r 526
Section X: Pain Management\r 527
Chapter 77: Acute Pain Management\r 527
1. Define acute pain.\r 527
2. Why has acute pain been undertreated?\r 527
3. How is pain assessed?\r 527
4. What medications are useful in treating acute pain?\r 528
5. Do all types of pain respond equally to medication containing opioids?\r 529
6. What is the risk of addiction with opioids?\r 529
7. How should opioids be given? Are some opioids better than others?\r 529
8. When treating acute pain in a chronic pain patient, how should the approach differ?\r 530
9. How should a patient-controlled analgesia pump be set?\r 530
10. What are common side effects of opioids? How are they treated?\r 531
11. How do neuraxial opioids work?\r 531
12. How do agonist-antagonists differ from opioids such as morphine?\r 531
13. How should patients with continuous infusions for analgesia or patient-controlled analgesia pumps be monitored?\r 532
14. How is an oral agent chosen for a patient who previously received intravenous opioids?\r 532
15. Which nonsteroidal antiinflammatory drug should be used?\r 533
16. Are cyclooxygenase-2 agents any better for pain than cyclooxygenase-1 agents?\r 533
17. What other techniques can be used for acute pain management?\r 533
18. How does good acute pain management make a difference?\r 533
Suggested Readings\r 534
Chapter 78: Chronic Pain Management\r 535
1. What is the definition of pain?\r 535
2. How does normal pain perception occur?\r 535
3. What is the classification of pain based on neurophysiologic mechanisms?\r 535
4. Name the most commonly used groups of medications for the treatment of chronic pain.\r 535
5. How are nerve blocks helpful in the treatment of chronic pain?\r 537
6. Are psychosocial factors important in the diagnosis and treatment of pain?\r 537
7. How is pain of malignant origin treated?\r 537
8. Define CRPS I and II. What nerve blocks are commonly used to treat these conditions?\r 537
9. How is neuropathic pain treated?\r 537
10. Define myofascial pain syndrome.\r 538
11. Define fibromyalgia.\r 538
12. How is fibromyalgia managed?\r 538
13. List possible etiologies of low back pain.\r 538
14. What is the rationale behind the use of epidural steroids in the treatment of radicular symptoms associated with a herniated disk?\r 538
15. Explain the gate theory of pain.\r 539
16. Name some indications for the use of spinal cord stimulators.\r 539
17. What are the most common medications used for intrathecal delivery via implantable delivery systems?\r 539
Suggested Readings\r 540
Index\r 541