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Smith's Anesthesia for Infants and Children E-Book

Smith's Anesthesia for Infants and Children E-Book

Peter J. Davis | Franklyn P. Cladis

(2016)

Additional Information

Book Details

Abstract

Now thoroughly up to date with new chapters, Smith’s Anesthesia for Infants and Children, 9th Edition, by Drs. Peter Davis and Franklyn Cladis, covers the information you need to provide effective perioperative care for any type of pediatric surgery. Leading experts in pediatric anesthesia bring you up to date with every aspect of both basic science and clinical practice, helping you incorporate the latest clinical guidelines and innovations in your practice.

  • Quick-reference appendices: drug dosages, growth curves, normal values for pulmonary function tests, and a listing of common and uncommon syndromes.
  • Outstanding visual guidance in full color throughout the book.
  • Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability.
  • More than 100 video demonstrations, including new regional anesthesia videos, echocardiograms of congenital heart lesions, anatomic dissections of various congenital heart specimens with audio explanations, various pediatric surgical operative procedures, airway management, and much more.

  • Table of Contents has been reorganized and new chapters added on statistics, sedation, pediatric obesity, and cardiac critical care pediatrics.
  • A new chapter on regional anesthesia for pediatrics, including video and ultrasound demonstrations online.
  • A new chapter on dermatology, specifically for the anesthesiologist, with more than 100 photos.
  • A new chapter on medical missions to third-world countries, including what you should know before you go.
  • A new Questions chapter provides opportunities for self-assessment.
  • New coverage includes cardiac anesthesia for congenital heart disease, anesthesia outside the operating room, and a new neonatology primer for the pediatric anesthesiologist.

Table of Contents

Section Title Page Action Price
Front Cover cover
Endsheet 2 IFC2
Smith's Anesthesia for Infants and Children i
Copyright Page iv
Dedication v
Contributors vi
Preface xii
Acknowledgments xiv
Table Of Contents xv
Video Contents xvii
I Basic Principles and Physiology 1
1 Special Characteristics of Pediatric Anesthesia 2
Outline 2
Introduction 2
Perioperative Monitoring 2
Anesthetic Agents 3
Airway Devices and Adjuncts 4
Intraoperative and Postoperative Analgesia in Neonates 4
Regional Analgesia in Infants and Children 5
Fundamental Differences in Infants and Children 6
Psychological Differences 6
Differences in Response to Pharmacologic Agents 6
Anatomic and Physiologic Differences 6
Body Size 6
Relative Size or Proportion 8
Central and Autonomic Nervous Systems 8
Respiratory System 9
Cardiovascular System 9
Fluid and Electrolyte Metabolism 9
Temperature Regulation 9
Summary 9
References 9
References 9.e1
2 Behavioral Development 10
Outline 10
Introduction 10
Prenatal Growth 11
Postnatal Growth 11
Developmental Assessment 11
Motor Development 12
Primitive Reflexes 12
Gross Motor Skills 13
Fine Motor Development 13
Language Development 13
Cognitive Development 13
Clinical Relevance of Growth and Development in Pediatric Anesthesia 18
Neurodevelopmental Assessment After Anesthesia in Early Childhood 18
Investigations of Neurodevelopment After Early Anesthesia 19
Neuropsychological Testing as a Tool for Assessing the Neurodevelopmental Effects of Anesthesia 19
Developmental Considerations 19
Cognitive Domains and Associated Neuropsychological Instruments 19
Intelligence 22
Language 22
Learning and Memory 22
Visual-Spatial Skills 22
Attention and Executive Function 22
Motor and Psychomotor Abilities 22
Summary 22
References 22
References 22.e1
3 Respiratory Physiology 23
Outline 23
Introduction 23
Development of the Respiratory System 24
Prenatal Development of the Lungs 24
Prenatal Development of Breathing 26
Neonatal Respiratory Adaptation 26
Postnatal Development of the Lungs and Thorax 27
Control of Breathing 28
Neural Control of Breathing 28
Dorsal Respiratory Group of Neurons 29
Ventral Respiratory Group of Neurons 30
Pontine Respiratory Group of Neurons 30
Respiratory Rhythm Generation 30
Airway and Pulmonary Receptors 30
Upper Airway Receptors 30
Tracheobronchial and Pulmonary Receptors 31
Slowly Adapting (Pulmonary Stretch) Receptors 31
Rapidly Adapting (Irritant) Receptors 31
C-Fiber Endings 32
Chest Wall Receptors 32
Chemical Control of Breathing 32
Central Chemoreceptors 32
Peripheral Chemoreceptors 32
Response to Carbon Dioxide 33
Control of Breathing in Neonates and Infants 35
Response to Hypoxemia in Infants 35
Response to Carbon Dioxide in Infants 35
Upper Airway Receptor Responses in the Neonatal Period 36
Active (REM) Versus Quiet (Non-REM) Sleep 36
Periodic Breathing 36
Apnea of Prematurity and Hypoxia 36
Postoperative Apnea 37
Maintenance of the Upper Airway and Airway Protective Reflexes 37
Pharyngeal Airway 37
Laryngeal Airway 39
Upper Airway Protective Reflexes 39
Anesthetic Effects on the Control of Breathing 40
Anesthetic Effects on Upper Airway Receptors 40
Anesthetic Effects on Upper Airway Muscles: Differential Sensitivity 40
Anesthetic Effects on Neural Control of Breathing 41
Anesthetic Effects on Chemical Control of Breathing 41
Summary 42
Lung Volumes 42
Postnatal Development of the Lungs 42
Pulmonary Hypoplasia 42
Functional Residual Capacity and Its Determinants 43
Mechanics of Breathing 44
Elastic Properties and Compliance 44
Compliance of the Lungs and Thorax 44
Developmental Changes in the Compliance of the Lungs and Thorax 45
Maintenance of Functional Residual Capacity in Infants 45
Effects of General Anesthesia on Functional Residual Capacity 46
Effect of Positive End-Expiratory Pressure in Anesthetized Children 46
Closing Volume and Closing Capacity 48
Dynamic Properties and Airway Resistance 48
Airway Resistance 48
Distribution of Airway Resistance 49
Upper Airway Resistance 49
Lower Airway Resistance 50
Tissue Viscoelastic Resistance 50
Time Constant of the Respiratory System 50
Flow Limitation and Maximum Expiratory Flow-Volume (MEFV) Curves 50
Distribution of Flow Resistance 51
Summary 51
ventilation 52
Dead Space and Alveolar Ventilation 54
Distribution of Ventilation 54
Clinical Implications 54
Summary 55
Gas Diffusion 56
Pulmonary Circulation 56
Perinatal Adaptation 56
Nitric Oxide and Postnatal Adaptation 56
Distribution of Pulmonary Perfusion 57
Ventilation/Perfusion Relationships 57
Low Ventilation/Perfusion Ratio and Lung Collapse While Breathing Oxygen 59
Oxygen Transport 59
Oxygen Affinity of Hemoglobin and P50 60
Acceptable Hemoglobin Levels 61
Oxygen Saturation in Neonates and Infants 62
Surface Activity and Pulmonary Surfactant 63
Ciliary Activity 64
Measurement of Pulmonary Function in Infants and Children 65
Standard Tests of Pulmonary Function 66
Measurement of Lung Volumes 67
Flow Function with Spirometry 67
Measurement of Airway Resistance 67
Maximum Expiratory Flow-Volume Curves 67
Evaluation of Upper Airway Function 68
Airway Reactivity 69
Pulmonary Function Tests in Infants 70
Measurement of Dynamic Respiratory Mechanics 70
Maximum or partial expiratory flow-volume curves. 70
Measurement of Passive Respiratory Mechanics 70
Indications for and Interpretation of Pulmonary Function Tests 71
Special Considerations for Pediatric Pulmonary Disease 72
Special Considerations for Pediatric Lung Disease 72
Asthma 72.e1
Bronchopulmonary Dysplasia 72.e3
Chronic Aspiration 72.e4
Tracheomalacia and Bronchomalacia 72.e4
Cystic Fibrosis 72.e4
Duchenne’s Muscular Dystrophy and Other Congenital Disorders of Neuromuscular Weakness 72.e5
Summary 72
References 72
References 72.e7
4 Cardiovascular Physiology* 73
Outline 73
Introduction 73
Fetal Circulation 73
Anatomy 74
Fetal Cardiac Output 75
Oxygen Delivery 76
Transitional Circulation 77
Pulmonary Blood Flow and Pulmonary Vascular Resistance 78
Myocardial Performance 80
Preload 80
Afterload 83
Contractility 84
Calcium and Diastolic Function 85
Heart Rate 85
Integrating Preload, Afterload, and Contractility 86
Developmental Aspects of Cardiomyocyte Structure and Function 87
Subcellular Structures 87
Sarcolemmal Ion Channels 87
Transverse Tubules 88
Mitochondria 88
Cytoskeleton 88
Sarcoplasmic Reticulum 88
Contractile Proteins 88
Myosin. 88
Actin. 88
Tropomyosin. 88
Troponins 88
Myocardial Energy 89
Electrophysiology 89
Central Nervous System Regulation of Cardiovascular Function 89
Pulmonary Vascular Development 90
Assessment of the Cardiovascular System 92
History 92
Physical Examination 92
Inspection 92
Palpation 92
Auscultation 93
Chest Radiograph 93
Electrocardiogram 94
Cardiac Catheterization 94
Hemodynamic Assessment 95
Pressure 96
Oxygen Content and Saturation 96
Oxygen Consumption 96
Cardiac Output 96
Shunts 97
Vascular Resistance 98
Echocardiography 98
Evaluation of Cardiac Function by Echocardiography 99
Preload. 99
Afterload. 99
Contractility. 99
Doppler Echocardiography Basics 99
Cardiac Magnetic Resonance Imaging 100
Effects of Anesthesia on the Cardiovascular System 103
Anesthetic Effects on Ion Currents 103
Anesthetic Effects on the Conduction System 103
Anesthetic Effects on Myocardial Metabolism 104
Anesthetic Effects on Systolic Function 104
Anesthetic Effects on Diastolic Function 104
Anesthetic Effects on Autonomic Control 104
Hemodynamic Effects of Specific Agents 105
Preanesthetic Medications 105
Inhalational Anesthetics 105
Opioids 105
Propofol 105
Ketamine 106
Etomidate 106
Dexmedetomidine 106
Regional Anesthetics 106
Summary (Box 4-1) 106
References 107
References 107.e1
5 Regulation of Fluids and Electrolytes 108
Outline 108
Introduction 108
Overview of Anatomy and Physiology 108
Anatomy 108
Renal Blood Flow 108
Renal Physiology 109
Glomerular Filtration 109
Overview of Tubular Function 111
The Kidneys and Antidiuretic Hormone 112
Renin-Angiotensin-Aldosterone System 113
The Kidneys and Atrial Natriuretic Peptide 113
Body Fluid Compartments 114
Intracellular Fluid 114
Extracellular Fluid 115
Interstitial Fluid 115
Transcellular Fluid 115
Maturation of Renal Function 115
Fluid and Electrolyte Needs in Healthy Infants and Children 116
Parenteral and Oral Fluids and Electrolytes 116
Dehydration in Infants and Children 117
Evaluation and Management of Dehydration 117
Perioperative Parenteral Guidelines of Fluids and Electrolytes 119
Perioperative Fluid Management of Premature and Full-Term Neonates 120
Fluid Management of Children Undergoing Renal Transplantation 120
Disorders of Sodium Metabolism 121
Hyponatremia 121
Diagnostic Approach 121
Hospital-Acquired Hyponatremia and Its Prevention 121
Hyponatremic Encephalopathy 121
Clinical symptoms. 121
Neurogenic pulmonary edema. 123
Brains cell volume regulation. 123
Risk Factors for Developing Hyponatremic Encephalopathy 123
Age. 123
Hypoxia. 123
Syndrome of inappropriate vasopressin production. 123
Cerebral salt wasting (CSW). 124
Treatment of Hyponatremic Encephalopathy 124
Risk Factors for Developing Cerebral Demyelination 124
Hypernatremia 125
Pathogenesis 125
Diagnosis 125
Clinical Manifestations of Hypernatremia 125
Treatment 126
Central Diabetes Insipidus 126
Hypernatremia in the Edematous Patient 126
Disorders of Potassium Metabolism 126
Potassium Homeostasis 127
Hypokalemia 127
Hypokalemia Without Potassium Depletion 127
Potassium Depletion 129
Nutritional Causes 129
Extrarenal Causes 129
Renal Causes 129
Manifestations of Potassium Depletion 129
Diagnosis of Hypokalemia 130
Treatment of Hypokalemia 130
Hyperkalemia 131
Transcellular Shift 131
Pseudohyperkalemia 131
High Potassium Intake 131
Decreased Potassium Excretory Capacity 132
Manifestations of Hyperkalemia 132
Clinical Evaluation of Hyperkalemia 133
Treatment of Hyperkalemia 133
Diuretic Therapy 134
Classification of Diuretics and Site of Action 134
Proximal Tubule Diuretics 134
Mannitol. 134
Acetazolamide. 135
Loop diuretics. 135
Distal Convoluted Tubule Diuretics 135
Late Distal Tubule Diuretics 136
Anesthetic Agents and the Kidneys 136
Disorders of Divalent Ion Metabolism 136
Calcium 136
Calcium Homeostasis 136
Hypocalcemia 137
Manifestations of hypocalcemia. 138
Treatment of hypocalcemia. 138
Hypercalcemia 139
Manifestations of hypercalcemia. 139
Management of hypercalcemia. 139
Magnesium 139
Magnesium Homeostasis 140
Etiology and Manifestations of Dysmagnesemia 140
Hypomagnesemia. 140
Hypermagnesemia. 141
Phosphorus 141
Phosphorus Homeostasis 142
Hypophosphatemia 142
Hyperphosphatemia 143
Summary 144
References 144
References 144.e1
6 Thermoregulation 145
Outline 145
Introduction 145
Temperature Monitoring 146
Physiology of Thermal Regulation 147
Afferent Thermal Sensing 147
Central Regulation 148
Efferent Response 149
The New Model of Thermoregulation 149
Heat-Loss Mechanisms 150
Conduction 150
Radiation 151
Convection 151
Evaporation 151
Heat Generation 152
Nonshivering Thermogenesis 152
Shivering Thermogenesis 153
Dietary Thermogenesis 154
Thermal Regulation in the Newborn 154
Effect of Anesthesia on Thermoregulation 156
Anesthesia and Hypothermia 156
Internal Redistribution 157
Thermal Imbalance 157
Thermal Steady State (Plateau or Rewarming Phase) 158
Anesthesia and Hyperthermia 159
Thermoregulation and General Anesthesia 159
Thermoregulation and Inhalational Anesthetics 160
Thermoregulation and Intravenous Agents 161
Thermoregulation and Regional Anesthesia 162
Adverse Effects of Hypothermia 162
Prevention of Hypothermia 164
Operating Room Temperature 164
Radiant Heaters 164
Reflecting Blankets 164
Skin-Warming Devices 164
Warming Mattresses 165
Warming of Intravenous Fluids 165
Humidified and Heated Gases 165
Transportation 166
Summary 166
References 166
References 166.e1
II Pharmacology 167
7 Developmental Pharmacology 168
Outline 168
Introduction 168
Physiology and Development 168
Pharmacodynamics 169
Pharmacokinetic Parameters 170
Volume of Distribution 170
Clearance 171
Renal Clearance 171
Hepatic Clearance 171
Absorption 172
Distribution 172
Metabolism 173
Elimination 175
Transporter Proteins 176
Scaling Pediatric Dosing 176
Nonlinear Pharmacokinetics 179
Compartment Models 179
Context-Sensitive Half-Time 181
Population Pharmacokinetics 183
Body Size and Maturation Adjustments 184
Data Modeling 184
References 185
References 185.e1
8 Intravenous Agents 186
Outline 186
Introduction 186
Barbiturates 186
Thiopental 186
Methohexital 187
Pentobarbital 187
Benzodiazepines and Antagonists 188
Diazepam 188
Midazolam 188
Flumazenil 191
Other Sedative Agents 191
Etomidate 191
Propofol 192
Ketamine 194
Clonidine 196
Dexmedetomidine 197
Summary 199
References 199
References 199.e1
9 Inhaled Anesthetic Agents 200
Outline 200
Introduction 200
Properties of Specific Inhaled Agents 200
Physical Properties 200
Sevoflurane 200
Desflurane 200
Nitrous Oxide 201
Xenon 201
Pharmacokinetics 201
Wash-Out 204
Obesity 204
Receptor Binding 205
Pharmacodynamics 205
Potency 205
Cardiovascular Effects 207
Respiratory Effects 207
Apnea 207
Central Nervous System Effects 209
ICP and CPP 209
Neuroapoptosis 209
Emergence Agitation or Delirium 211
Metabolism and Toxicity 211
Malignant Hyperthermia 212
Nitrous Oxide Toxicity 212
Hepatotoxicity 212
Nephrotoxicity 212
Summary 213
References 213
References 213.e1
10 Local Anesthetic Agents 214
Outline 214
Introduction 214
Physiochemical Properties 214
Mechanisms of Action 215
Systemic Absorption 215
Distribution 216
Protein Binding 216
Metabolism 216
Clearance 216
Lidocaine 217
Bupivacaine 217
Ropivacaine 217
Levobupivacaine 217
New Directions 218
References 218
References 218.e1
11 Opioids 219
Outline 219
Introduction 219
Pharmacogenetics 220
Opioid Analgesics 223
Morphine 224
Meperidine 226
Fentanyl 226
Sufentanil 228
Alfentanil 229
Remifentanil 231
Methadone 232
Hydromorphone 233
Tramadol 233
Hydrocodone 233
Oxycodone 234
Codeine 235
Opioid Agonist-Antagonists 236
Nalbuphine 236
Opioid Antagonists 236
Abuse-Deterrent Formulations 237
Controlled-Release Oxycodone (Reformulation) 238
Morphine/Naltrexone (Embeda) 238
Acknowledgments 238
References 238
References 238.e1
12 Neuromuscular Blocking Agents 239
Outline 239
Introduction 239
Neuromuscular Physiology and the Pharmacology of Neuromuscular Transmission 239
Neuromuscular Junction and Neuromuscular Transmission 239
Acetylcholine Receptors 239
Neuromuscular Transmission in the Neonate 239
Mechanism of Action of Depolarizing and Nondepolarizing Neuromuscular Blocking Agents 240
Basic Definitions and Pharmacology of Neuromuscular Blocking Agents 241
ED95 and Intubating Dose 241
Dose-response curves. 241
Relationship Between Potency and Intubating Dose of Neuromuscular Blocking Agent 241
Onset and Duration of Block, Maintenance Doses, and Recovery Index 241
Duration of Block in Infants 243
Pharmacologic Differences in Infants and Children: Sensitivity, Volume of Distribution, and Clearance 243
Monitoring Neuromuscular Block 245
Types of Monitoring: Peripheral Nerve Stimulation and Acceleromyography 245
Types of Stimuli 245
Neuromuscular Block Effects at Different Muscles 246
Posttetanic count. 246
Double burst stimulation. 246
Monitoring Recovery 246
Timing of antagonists. 247
Types of Neuromuscular Blocking Agents 247
Depolarizing Neuromuscular Relaxant: Succinylcholine 247
Dose, Onset, and Duration in Infants and Children 248
Side effects. 248
Cardiac arrest. 248
Dysrhythmias. 248
Intragastric pressure. 248
Intraocular pressure. 249
Increased intracranial pressure. 249
Hyperkalemia, myoglobinemia, and increase in creatine phosphokinase. 249
Masseter spasm and malignant hyperthermia. 249
Present Status of Succinylcholine Use in Infants and Children 249
Contraindications to Succinylcholine: Absolute and Relative 249
Nondepolarizing Neuromuscular Relaxants 250
Side Effects 250
Anaphylaxis. 250
Routes of Elimination of Nondepolarizing Agents 250
Classification of Nondepolarizing Blocking Drugs 251
Interactions with inhaled anesthetics. 251
Ultra-Short-Acting Agents 251
Gantacurium. 251
Short-Acting Agents 251
Mivacurium. 251
Rapacuronium. 252
Intermediate-Acting Agents 252
Atracurium. 252
Cisatracurium. 252
Dose, onset, and duration. 252
Cisatracurium infusions. 253
Vecuronium. 253
Dose, onset, and duration in children. 253
Duration of block in the infant and child. 253
Infants versus children infusions. 253
Children versus adults infusions. 253
Patients with organ failure. 254
Rocuronium 254
Dose, onset, intubating conditions, and recovery. 254
Recovery in infants. 254
Recovery in children versus adults. 254
Long-Acting Agents 254
Pancuronium. 254
Antagonists for Neuromuscular Blocking Agents: Anticholinesterases and Sugammadex 255
Mechanism of Action 255
Anticholinesterase Drugs 255
Infants and children. 255
Side effects of anticholinesterases. 255
Cardiovascular effects. 255
Gastrointestinal effects. 255
Sugammadex 256
Summary 257
Acknowledgment 257
References 257
References 257.e1
13 Anesthetic Adjuncts 258
Outline 258
Introduction 258
Anticholinergic Agents 258
Atropine 258
Glycopyrrolate 259
Scopolamine 259
Adjunctive Pain Medications (Tables 13-2 and 13-3) 259
Ketorolac 259
Acetaminophen 261
Oral 261
Rectal 261
Intravenous 261
Antiemetics 262
Serotonin Antagonists 262
Ondansetron 262
Dolasetron 262
Granisetron 263
Palonosetron 263
Other Agents 263
Metoclopramide 263
Promethazine 263
Droperidol 263
Dexamethasone 263
Aprepitant 264
Antihistamines 264
Diphenhydramine 264
Dimenhydrinate 264
Summary 264
References 264
References 264.e1
III General Approach 265
14 Psychological Aspects of Pediatric Anesthesia 266
Outline 266
Introduction 266
Psychological Preparation for Anesthesia and Surgery 266
Incidence and Definition 266
Identification of Children at Risk 267
Psychological Preparation Programs 267
Considerations in Choosing a Preparation Program 268
Parental Issues 269
Future of Preparation Programs 269
Intraoperative Considerations 270
Parental Presence 270
Parental Perspectives 270
Experimental Studies Involving Parental Presence 270
Satisfaction Issues 272
Postoperative Period: Parental Presence in the Recovery Room 272
Postoperative Period: Support for Parent Management of Recovery at Home 273
Health Care Provider Training 273
Behavioral Interventions 273
Family-Centered Preparation 273
Music 273
Acupuncture 274
Preoperative Interview 275
Postoperative Behavioral Changes 275
Epidemiology 275
Predictors 276
Interventions 276
Preparation Programs 276
Parental Presence 276
Sedatives 276
Clinical Outcomes 277
Summary 277
References 278
References 278.e1
15 Preoperative Preparation 279
Outline 279
Introduction 279
Psychology of Hospitalization 279
Preoperative Medical Evaluation and Preparation 279
Prematurity 280
Apnea of Prematurity 280
Bronchopulmonary Dysplasia 281
Subglottic Stenosis 281
Airway 281
Cardiovascular 282
Murmurs 282
Subacute Bacterial Endocarditis 282
Respiratory 283
Asthma 283
Upper Respiratory Tract Infections 284
Obstructive Sleep Apnea 285
Central Nervous System 286
Autism 286
Attention Deficit Hyperactivity Disorder 287
Seizures 287
Musculoskeletal 287
Cerebral Palsy 287
Muscular Dystrophy 287
Hematology 288
Sickle Cell Disease 288
Oncology 288
Metabolic 288
Mitochondrial Myopathy 288
Endocrine 289
Adrenal Supression 289
Diabetes mellitus. 289
Anesthesia History 290
Medications 290
Allergies 291
Family History 291
Social History 291
Physical Exam 292
Preoperative Laboratory Data 293
Fasting Guidelines 293
Premedication 294
Anticholinergic Agents 294
Opioids 294
Benzodiazepines 295
Ketamine 295
Alpha-2-Adrenoreceptor Agonists 295
Dexmedetomidine 296
Legal and Ethical Guidelines 296
ASA Physical Status 296
Summary 296
References 297
References 297.e1
16 Equipment 298
Outline 298
Introduction 298
Humidifiers 298
Anesthesia Breathing Systems 299
Nonrebreathing and Partial Rebreathing Systems 299
Mapleson A System 299
Mapleson D System 299
Bain Modification of Mapleson D 301
Circle Systems 302
Carbon Dioxide Absorbers 302
Anesthesia Machines 302
Gas and Anesthetic Vapor Delivery 302
Oxygen 302
Indications for Careful Control of Fio2 302
Anesthetic Vapor Delivery 304
Anesthesia Machine Ventilators 304
Controlled Ventilation 305
Assisted Spontaneous Ventilation 306
Warming Devices 307
Circulating Water Devices 307
Forced-Warm-Air Devices 308
Resistive Polymer Warming Devices 308
Wrapping and Draping with Plastic Sheets 308
Humidification of Inspired Gases 308
Face Masks 308
Oral and Nasal Airway Devices 309
Tracheal Tubes 310
Double-Lumen Tracheal Tubes 312
Tracheal Tubes for One-Lung Ventilation 313
Univent Tracheal Tubes 313
Selective Endobronchial Intubation 313
Endobronchial Intubation with a Standard Tracheal Tube 313
Bronchial-Blocker Devices 313
Tracheostomy Tubes 314
Supralaryngeal Airways 315
Laryngeal Masks 315
Cobra Perilaryngeal Airway 318
Laryngeal Tube 319
Flexible Fiberoptic Bronchoscopy 319
Lighted Stylets 320
Optical Stylets 320
Retromolar Scope 321
Laryngoscopes 321
Video Laryngoscopes 322
Glidescope 322
Storz Video Laryngoscope 323
Optical Laryngoscope 324
Cricothyrotomy 324
Intravenous Equipment 324
Catheters 324
Near-Infrared Light Devices 324
Ultrasound Guidance for Peripheral Intravenous and Arterial Access 325
Intraosseous Access 325
Infusion Sets 326
Intravenous Fluid Warmers 326
Summary 327
References 327
References 327.e1
17 Pediatric Anesthesia Monitoring 328
Outline 328
Basic Monitoring 328
Physical Examination 329
Observation 329
Auscultation 329
Electrocardiography 329
Systemic Arterial Pressure 329
Noninvasive Measurement 329
Direct Measurement 330
Systolic Pressure Variation 331
Central Venous Pressure 332
Mixed Venous Oxygenation and Monitoring 333
Pulmonary Artery Catheters 333
Transesophageal Echocardiography 334
Noninvasive Respiratory Gas Monitoring 335
Carbon Dioxide 335
Other Gases 338
Monitoring Oxygen and Carbon Dioxide 338
Cutaneous Oxygen Tension 338
Cutaneous Carbon Dioxide Tension 338
Pulse Oximetry 338
Multiple-Wavelength Pulse Oximetry 340
Plethysmographic Waveform Analysis 340
Temperature 340
Urine Output 341
Near-Infrared Spectroscopy 341
Cerebral Monitoring 342
Bispectral Index 342
Monitoring of Neuromuscular Blockade 342
Neurophysiologic Monitoring 343
Intraoperative Communication 343
Technical Considerations 343
Anesthetic Considerations 344
Maturational Changes 344
Intraoperative Monitoring Modalities and Applications 344
Electroencephalography 345
Somatosensory Evoked Potentials 345
Motor Evoked Potentials 346
Brainstem Auditory Evoked Potentials 347
Visual Evoked Potentials 347
Electromyography 347
Intraoperative Monitoring Summary 348
Summary 348
Acknowledgments 348
References 348
References 348.e1
18 Airway Management 349
Outline 349
Introduction 349
Developmental Anatomy* 349
The Upper Airway 349
Formation of the Cranial Vault and Base 349
Clinical Correlation 349
Craniovertebral Development 350
Clinical Correlation 351
The Face 351
Clinical Correlation 352
Clinical Correlation 353
The Branchial Apparatus 353
Branchial arches. 353
Branchial Pouches 354
Branchial Clefts 354
Clinical Correlation 354
The Larynx 355
Developmental Physiology 356
The Upper Airway 356
Developmental Airway Physics 357
Laminar and Turbulent Flow 357
Clinical Correlation 358
Bubble Stability and Breathing: Laplace’s Law 358
IV Clinical Management of Specialized Surgical Problems 512
23 Neonatology for Anesthesiologists 513
Outline 513
Introduction 513
Preoperative Evaluation 514
Development of the Fetus and the Intrauterine Environment 514
Labor and Delivery and Perinatal Events 515
Labor and Delivery 516
Neonatal Asphyxia 516
Metabolic Status in the Early Postnatal Period 516
Thermal Environment 516
Neonatal Requirements for Sodium, Calcium, and Glucose 516
Gestational Age and Birth Weight 517
Small-for-Gestational-Age Infants 517
Large-for-Gestational-Age Infants 518
Very Low-Birth-Weight and Extremely Low-Birth-Weight Infants 518
The Premature Infant 518
Late Preterm Infants (Born at 35 to 37 Weeks’ Gestation) 518
Infants Born at 30 to 34 Weeks’ Gestation 518
Infants Born at 27 to 29 Weeks’ Gestation 519
Infants Born at or Before 26 Weeks’ Gestation 519
Managing the Airway in Neonates 519
The Pulmonary System 520
Development 520
Pulmonary Blood Flow and Ventilation in the Early Postnatal Period 521
Pulmonary Blood Flow 521
Ventilation 522
Respiratory Distress Syndrome 523
Retinopathy of Prematurity 524
Bronchopulmonary Dysplasia 524
Preoperative Pulmonary Evaluation 524
The Cardiovascular System 525
Transitional Circulation 525
Nitric Oxide 526
Myocardial Ultrastructure 527
Force Generation 527
Myofibrils 527
Sarcomere 527
Contractile Proteins 528
Calcium Flux 529
Sarcolemma. 529
Sarcoplasmic Reticulum 530
Myocardial Compliance 530
Cytoskeleton 530
Sympathetic Innervation 531
Cardiovascular Function in Newborn Infants 531
Preoperative Cardiovascular Evaluation 531
The Central Nervous System 531
Embryologic Development and Abnormalities of the Central Nervous System 531
Growth of the Fetal Brain 534
Autoregulation of Cerebral Blood Flow in Newborn Infants 534
Unique and Vulnerable Cell Populations in the Brain of the Fetus and Premature Infant 535
Germinal Matrix–Intraventricular Hemorrhage and Periventricular Hemorrhagic Infarction 535
Periventricular Leukomalacia 536
Apgar Score 536
Hypoxic-Ischemic Injury 537
Perinatal Stroke 537
Preoperative Neurologic Evaluation 537
Postanesthetic Apnea 538
Thermoregulation 539
Hepatic Function 539
Glucose Metabolism 540
Hypoglycemia 540
Glucose Metabolism in the Fetus and Newborn 541
Perioperative Management of Hepatic Function 541
Biotransformation 541
Phase I: CYP450 542
Phase II: UGT, SULT, NAT 543
Coagulation 544
Hyperbilirubinemia 545
Renal Function 547
Early Growth and Development of the Renal System 547
Distribution of Total Body Water 548
Glomerular Filtration Rate 548
Renal Tubular Function 548
Hormonal Control of Fluids and Electrolytes 552
Hematologic Function 553
Preoperative Hematologic Evaluation 554
Survival and Outcomes 554
Chronic Lung Disease and Bronchopulmonary Dysplasia 556
Mechanical Ventilation, CPAP, and Bronchopulmonary Dysplasia 557
Oxygen Therapy and Toxicity 558
Oxygen Therapy and Toxicity in Term Infants 558
Oxygen Therapy and Toxicity in Premature Infants 558
Outcomes of Ex-Premature Patients Who Have Had Pulmonary Dysfunction 559
Long-Term Outcomes in Adolescents and Adults 560
Bronchopulmonary Dysplasia, Corticosteroids, and Neurologic Outcomes 562
Outcomes of Ex-Premature Patients Who Have Had Neurologic Dysfunction 564
Bayley Assessment of Outcomes 564
Brain Injury 564
Brain Injury in Preterm Infants 565
Brain Injury and Clinical Outcomes in Expremature Patients 566
Neonatal Encephalopathy 567
Cerebral Palsy 569
Summary 570
References 570
References 570.e1
24 Anesthesia for General Surgery in the Neonate 571
Outline 571
Introduction 571
Etiologies of Death in the Neonatal Intensive Care Unit 571
Anesthetic Pharmacology in the Neonate 572
Pharmacokinetics and Pharmacodynamics 573
Inhaled Anesthetic Agents 573
Intravenous Anesthetics and Analgesics 574
Muscle Relaxants 576
General Approach to Intraoperative Monitoring of the Neonate 577
Thermal Protection 577
Monitoring in the Operating Room 577
General Observation 577
Circulatory Monitoring 577
Ventilatory Monitoring 579
Monitoring of the Neuromuscular Junction 579
Monitoring Urine Output 579
Minimal-Access Surgery in the Neonate 579
Laparoscopy Background 580
Laparoscopy and Thoracoscopy in the Newborn 581
Specific Neonatal Surgical Lesions 582
Abdominal Wall Defects: Gastroschisis and Omphalocele 582
Embryology 583
Preoperative Management 584
Intraoperative Management 584
Postoperative Care 585
Outcome 586
Congenital Diaphragmatic Hernia 586
Embryology 589
Preoperative Management 589
Pathophysiology. 589
Prenatal Diagnosis and Treatment 590
Postnatal Diagnosis and Treatment 590
Clinical presentation. 590
Timing of surgery. 591
Nitric oxide. 592
Extracorporeal membrane oxygenation. 593
Intraoperative and postoperative management. 594
Outcomes 595
Pulmonary. 595
Musculoskeletal deformity. 595
Gastrointestinal. 596
Neurodevelopmental. 596
Tracheoesophageal Fistula and Esophageal Atresia 597
Embryology 598
Anatomy 599
Prenatal Diagnosis and Clinical Presentation 599
Preoperative Management 600
Intraoperative Management 600
Surgical technique. 600
Airway Management 601
Postoperative Management 602
Outcomes 602
Gastrointestinal. 602
Airway/Pulmonary. 603
Necrotizing Enterocolitis 604
Classic Necrotizing Eterocolitis 604
Pathophysiology 605
Ischemia/Disturbance in Microvascular Flow 605
Bacterial Colonization/Inflammation/Immune Responses 605
Immature Intestinal Barrier/Motility/Immunity 606
Genetics 607
Preoperative Management 607
Intraoperative Management 609
Postoperative Management 610
Outcome 610
Imperforate Anus (Anal Atresia) 611
Intraoperative Management 611
Postoperative Management 612
Outcome 612
Intestinal Obstruction 612
Duodenal Obstruction 612
Jejunoileal Atresia 613
Meconium Ileus 613
Malrotations and Volvulus 614
Sacrococcygeal Teratoma 614
Embryology and Diagnosis 614
Intraoperative Management 615
Outcome 615
Summary 616
References 616
References 616.e1
25 Anesthesia for Fetal Surgery 617
Outline 617
Introduction 617
Diseases and Therapies 617
Complicated Multiple Gestations 617
Neurologic 619
Airway 620
Lung Lesions 620
Cardiac Disease 622
Bladder Outlet Obstruction 622
Sacrococcygeal Teratoma 622
Physiology 623
Maternal 623
Fetal 624
Uteroplacental Blood Flow 625
Placental Anatomy and Transport 626
Surgical Issues 627
Minimally Invasive Interventions 627
Open Midgestation Surgery 628
EXIT Procedure 628
Anesthetic Plan 628
Teamwork and Communication 628
Preoperative Preparation 628
Minimally Invasive Procedures 629
Open Midgestation Procedures 629
EXIT Procedure 630
Intraoperative Fetal Resuscitation 631
Summary 631
References 632
References 632.e1
26 Anesthesia for Congenital Heart Surgery 633
Outline 633
Pathophysiology of Congenital Heart Disease 635
Shunting 635
Single-Ventricle Physiology 635
Intercirculatory Mixing 636
Fontan Physiology 637
General Approach to Anesthetic Management 637
Preparation for Anesthesia 637
Mask Induction 638
Intravenous Induction 639
Maintenance of Anesthesia 639
Specific Lesions 639
Atrial Septal Defect 639
Clinical Presentation 640
Management of Anesthesia 640
Ventricular Septal Defect 640
Clinical Presentation 641
V Systemic Disorders and Associated Problems 1100
44 Endocrine Disorders 1101
Outline 1101
Diabetes Mellitus 1101
Preoperative Evaluation 1102
Perioperative Management 1102
Long-Acting Insulin Analogs and Subcutaneous Infusion Insulin Pumps 1102
Intravenous Insulin Infusion 1103
Classic Regimen 1103
Anesthetic Management 1104
Perioperative Management of Diabetic Ketoacidosis 1104
Diabetes Insipidus 1104
Syndrome of Inappropriate Antidiuretic Hormone Secretion 1106
Adrenal Insufficiency 1106
Adrenal Insufficiency Due to Primary Abnormalities of the Hypothalamic-Pituitary-Adrenal Axis 1106
Perioperative Steroid Management 1107
Hypothalamic-Pituitary-Adrenal Axis Suppression Caused by Exogenous Steroid Therapy 1108
Thyroid Disorders 1109
Hypothyroidism 1109
Hyperthyroidism 1110
Congenital Hyperthyroidism 1110
Graves’ Disease 1110
Thyroid Storm 1110
Laboratory Evaluation 1111
Treatment 1111
Anesthetic Management 1111
Intraoperative Management of Patients for Thyroidectomy 1111
Postoperative Care 1112
Pheochromocytoma 1112
Diagnosis 1112
Preoperative Preparation and Evaluation 1113
Anesthetic Induction 1113
Intraoperative Management 1113
Postoperative Care 1114
Congenital Hyperinsulinism 1114
Management and Surgical Therapy 1114
Anesthetic Management of Pancreatectomy 1114
References 1114
References 1114.e1
45 Respiratory Disorders 1115
Outline 1115
Asthma 1115
Epidemiology 1115
Pathophysiology 1115
Classification of Asthma Severity and Control 1116
Pharmacologic Therapy 1117
Preoperative Evaluation 1119
Anesthetic Considerations 1120
Perioperative Asthma Complications 1120
Cystic Fibrosis 1121
Clinical Spectrum 1121
Pulmonary Manifestations 1121
Upper-Airway Manifestations 1123
Gastrointestinal Manifestations 1123
Pancreatic Manifestations 1123
Hepatobiliary Manifestations 1123
Chronic Pain 1123
Anesthetic Considerations 1123
Nontransplant Anesthesia in Pediatric Lung Transplant Recipients 1124
Physiologic Features of the Transplanted Lung 1124
Common Indications for Lung Transplantation 1124
Complications Following Transplantation 1124
Anesthetic Considerations 1125
Bronchopulmonary Dysplasia 1125
Epidemiology 1125
Pathogenesis 1125
Old Versus New Bronchopulmonary Dysplasia 1126
Respiratory Function 1126
Cardiovascular Function 1126
Pharmacologic Interventions 1126
Anesthetic Considerations 1127
Upper-Respiratory Tract Infections 1127
Complicated Pneumonias Requiring Intervention 1128
Children on Home Ventilators 1129
References 1130
References 1130.e1
46 Cardiovascular Disorders* 1131
Outline 1131
Introduction 1131
Anesthetic Management 1131
Preoperative Period 1131
Intraoperative Period 1131
Postoperative Period 1133
The Child with a Murmur and Possible Heart Disease 1133
Noncardiac Manifestations of Congenital Heart Disease 1134
Kawasaki Disease 1134
Takayasu Arteritis 1135
Inflammatory/Infectious/Postinfectious Diseases 1136
Hypertrophic Cardiomyopathy 1137
Dilated Cardiomyopathy 1138
Restrictive Cardiomyopathy 1138
Maternal/Intrauterine Disorders 1138
Genetic Diseases 1139
Toxins 1139
Trauma 1139
Summary 1141
References 1141
References 1141.e1
47 Hematology and Coagulation Disorders 1142
Outline 1142
Introduction 1142
Overview of the Hemostatic System 1142
Mechanisms of Hemostasis 1142
Primary Hemostasis 1142
Secondary Hemostasis 1143
Teritary Hemostasis 1143
Maturation of Hemostasis 1144
Monitoring of Hemostasis 1145
Standard Coagulation Tests 1146
Viscoelastic Coagulation Tests 1146
Congenital Coagulation Abnormalities 1147
Von Willebrand Disease 1147
Hemophilia 1148
Inherited Platelet Disorders 1150
Immune Thrombocytopenia 1150
Thrombophilias 1152
Acquired Coagulation Abnormalities 1153
Acquired Coagulation Abnormalities of Primary Hemostasis 1153
Antiplatelet Drugs 1153
Thromboxane Inhibitors 1153
Platelet ADP Receptor Antagonists 1153
Platelet Glycoprotein IIb/IIIa Receptor Antagonists 1154
Phosphodiesterase Inhibitors 1154
Miscellaneous 1154
Acquired Coagulation Abnormalities of Secondary Hemostasis 1154
Anticoagulant Drugs 1154
Heparin. 1154
Warfarin. 1155
Low molecular weight heparins. 1155
Direct thrombin inhibitors. 1155
Factor Xa inhibitors. 1156
Acquired Coagulation Abnormalities of Tertiary Hemostasis 1156
Disseminated Intravascular Coagulation 1156
Other Acquired Coagulation Abnormalities 1157
Hepatic Dysfunction 1157
Dilutional/Transfusion Coagulopathy 1158
Red Blood Cell and Hemoglobin Abnormalities 1159
Glucose-6-Phosphate Dehydrogenase Deficiency 1159
Hemoglobin Abnormalities 1160
Thalassemias 1160
Sickle Cell Anemia 1161
Intraoperative Management of Coagulopathies 1163
Available Blood Products 1163
Whole Blood 1163
Packed Red Blood Cells 1163
Platelets 1164
Fresh Frozen Plasma 1164
Cryoprecipitate 1164
Pharmacologic and Procoagulant Agents 1165
Desmopressin Acetate 1165
Antifibrinolytic Drugs 1165
Recombinant Activated Factor VII 1167
Prothrombin Complex Concentrates 1167
Fibrinogen Concentrate 1168
References 1168
References 1168.e1
48 Oncologic Disorders 1169
Outline 1169
Introduction 1169
Pediatric Acute Lymphoblastic Leukemia 1169
Central Nervous System: Medulloblastoma 1171
Abdomen: Neuroblastoma 1172
Hematopoietic Stem Cell Transplantation 1174
Anesthetic Management 1175
Pharmacologic and Physiologic Side Effects of Cancer Therapy 1175
Myelosuppression 1175
Cardiotoxicity 1176
Anthracycline Antibiotics 1176
Cyclophosphamide 1176
Radiation 1176
Pulmonary Toxicity 1176
Alkylating Agents 1176
Radiation 1177
Nerve Toxicity 1177
Summary 1177
References 1177
References 1177.e1
49 Genetic Muscle Disorders 1178
Outline 1178
Overview 1178
Normal Skeletal Muscle Contraction 1178
Anesthetic Impact on Neuromuscular Physiology 1179
Myasthenic Syndromes 1179
Anesthetic Considerations 1179
Myotonias 1180
VI Critical Care in Pediatric Anesthesia 1235
54 Cardiopulmonary Resuscitation 1236
Outline 1236
Cardiac Arrest During Anesthesia 1236
Incidence of Cardiac Arrest During Anesthesia 1236
Etiology of Cardiac Arrest During Anesthesia 1238
Outcomes From Cardiac Arrest During Anesthesia 1241
Cardiopulmonary Resuscitation 1242
Recognizing the Need for Cardiopulmonary Resuscitation 1242
Physiology of Cardiopulmonary Resuscitation: Reestablishment of Ventilation 1243
Physiology of Cardiopulmonary Resuscitation: Reestablishment of Circulation 1245
Mechanisms of Blood Flow During Cardiopulmonary Resuscitation 1245
Thoracic Pump Mechanism 1246
Cardiac Pump Mechanism 1246
Efficacy of Blood Flow During CPR 1246
Maintenance of Circulation 1246
Patient-related factors. 1246
Ventilation-related factors. 1247
Compression-related factors. 1247
Compression rate and duty cycle. 1247
Distribution of Blood Flow During CPR 1248
Monitoring the Effectiveness of Resuscitative Efforts 1249
Vascular Access for Medication and Fluid Administration 1251
Peripheral and Central Vascular Access 1251
Intraosseous Access 1252
Intratracheal Medication Administration 1252
Medications for Cardiopulmonary Resuscitation 1253
Vasoactive Medications 1253
Adrenergic Agonists 1253
Effects on coronary blood flow. 1253
Effects on cerebral blood flow. 1253
Outcome. 1253
Dosage. 1253
Other Adrenergic Agents 1254
Phosphodiesterase inhibitors. 1254
Vasopressin. 1254
Indication and dosage. 1255
Appendix A Pediatric Drug Dosages e1
Appendix B Growth Curves e7
Appendix C Normal Pulmonary Function Values e15
Appendix D Index of Syndromes and Their Pediatric Anesthetic Implications e23
Abbreviations 1365
Index 1368
A 1368
B 1370
C 1372
D 1376
E 1377
F 1379
G 1379
H 1380
I 1382
J 1383
K 1383
L 1383
M 1384
N 1386
O 1388
P 1390
Q 1393
R 1393
S 1394
T 1397
U 1398
V 1399
W 1399
X 1399
Y 1399
Z 1399
Endsheet 7 IBC3