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Perioperative Care, An Issue of Veterinary Clinics of North America: Small Animal Practice, E-Book

Perioperative Care, An Issue of Veterinary Clinics of North America: Small Animal Practice, E-Book

Lori S. Waddell

(2016)

Additional Information

Book Details

Abstract

This issue, Guest Edited by Dr. Lori Waddell, focuses on Perioperative Care in dogs and cats. Articles include: Oxygenation and ventilation, Heart rate and rhythm, Acid/base and electrolyte disturbances, Blood pressure management, Thermoregulation, Anemia and oxygen delivery, Analgesia, Assessment of perfusion and fluid balance, Hemostasis monitoring and treatment, and more!

Table of Contents

Section Title Page Action Price
Front Cover Cover
Perioperative Care i
Copyright\r ii
Contributors iii
EDITOR iii
AUTHORS iii
Contents vii
Preface: Perioperative Monitoring\r vii
Assessment of Fluid Balance and the Approach to Fluid Therapy in the Perioperative Patient\r vii
Anemia and Oxygen Delivery\r vii
Oxygenation and Ventilation\r vii
Perioperative Acid-Base and Electrolyte Disturbances\r vii
Perioperative Monitoring of Heart Rate and Rhythm\r viii
Perioperative Blood Pressure Control and Management\r viii
Inadvertent Perianesthetic Hypothermia in Small Animal Patients\r viii
Postoperative Hemostasis Monitoring and Management\r ix
Analgesia in the Perioperative Period\r ix
Nursing Care: Care of the Perioperative Patient\r ix
Wound Care\r ix
Peri-Surgical Nutrition: Perspectives and Perceptions\r x
VETERINARY CLINICS OF\rNORTH AMERICA: SMALL\rANIMAL PRACTICE\r xi
FORTHCOMING ISSUES xi
November 2015 xi
January 2016 xi
March 2016 xi
RECENT ISSUES xi
July 2015 xi
May 2015 xi
March 2015 xi
Perioperative Monitoring xiii
Assessment of Fluid Balance and the Approach to Fluid Therapy in the Perioperative Patient 895
Key points 895
INTRODUCTION 895
THE IMPORTANCE OF MONITORING 896
FLUID BALANCE IN PERIOPERATIVE PATIENTS 897
THE ROLE OF THE PHYSICAL EXAMINATION IN ASSESSING PERFUSION AND HYDRATION 898
APPROACH TO FLUID THERAPY IN THE PERIOPERATIVE PATIENT 899
Acute Resuscitative, Rehydration, and Maintenance Fluid Therapy 900
Acute resuscitative fluid therapy 900
Rehydration fluid therapy 900
Maintenance fluid therapy 900
Preoperative Fluid Balance 901
Intraoperative Fluid Balance 901
Postoperative Fluid Balance 902
Intravenous Fluid Types 902
Risk Factors for Developing Complications of Fluid Therapy 904
RESUSCITATION ENDPOINTS AND GOAL-DIRECTED THERAPY 905
UPSTREAM ENDPOINTS OF RESUSCITATION 906
Arterial Blood Pressure 906
Shock Index 907
Central Venous Blood Pressure 907
DOWNSTREAM ENDPOINTS OF RESUSCITATION 909
Lactate 909
Central and Mixed Venous Oxygen Saturation (ScvO2/SvO2) 909
Venoarterial CO2 Gradient 911
DIRECT ASSESSMENT OF THE MICROCIRCULATION 911
CURRENT CONTROVERSIES AND FUTURE CONSIDERATIONS 911
SUMMARY 912
REFERENCES 912
Anemia and Oxygen Delivery 917
Key points 917
INTRODUCTION 917
DETERMINANTS OF TISSUE OXYGENATION 917
HEMOGLOBIN 919
MICROVASCULAR DETERMINANTS OF OXYGEN DELIVERY 920
Rheologic Control of Arteriolar Tone 920
Precapillary Oxygen Delivery 921
Microvascular Variations in Hematocrit and Blood Viscosity 921
Plasma Skimming 923
ANEMIA 923
PHYSIOLOGIC ADAPTATIONS TO ANEMIA 924
Cardiac Output 924
Oxygen Extraction 925
CLINICAL APPROACH TO ANEMIC PATIENTS 925
Assessment of Tissue Oxygenation 925
Methods for Enhancing Oxygen Delivery and Tissue Oxygenation 926
SUMMARY 927
REFERENCES 927
Oxygenation and Ventilation 931
Key points 931
PREDICTING RESPIRATORY CONCERNS 931
Evaluation 931
TYPES OF SURGICAL PROCEDURES 932
IMMEDIATE POSTOPERATIVE SUPPORT 933
HYPOXEMIA 933
HYPOVENTILATION 937
Combined Ventilatory and Oxygenation Failure 939
SUMMARY 939
REFERENCES 940
Perioperative Acid-Base and Electrolyte Disturbances 941
Key points 941
INTRODUCTION 941
PREOPERATIVE DERANGEMENTS 943
Metabolic Acidosis 943
Lactic Acidosis 944
Hyperkalemia 945
Hypochloremic Metabolic Alkalosis 946
INTRAOPERATIVE DERANGEMENTS 947
Hypoxemia/Hypercapnia 947
POSTOPERATIVE DERANGEMENTS 948
Hypernatremia 948
Renal Tubular Acidosis 949
SUMMARY 950
REFERENCES 950
Perioperative Monitoring of Heart Rate and Rhythm 953
Key points 953
NATURE OF THE PROBLEM 953
Introduction 953
Mechanisms of Arrhythmia Formation 954
Role of Transient Imbalances 955
APPROACH TO MANAGEMENT 955
Diagnosis of Perioperative Arrhythmias 955
Decision to Treat 955
Therapeutic Options 958
MONITORING AND CLINICAL OUTCOMES 959
COMPLICATIONS AND CONCERNS 961
SUMMARY 962
REFERENCES 962
Perioperative Blood Pressure Control and Management 965
Key points 965
BLOOD PRESSURE CONTROL 966
Ultra-Short-Acting Blood Pressure Control Systems 966
Short-Acting Blood Pressure Control Systems 966
Long-Acting Control Systems 967
Causes of Hypotension During Anesthesia 967
Indirect Indicators of Hypotension 968
CONDITIONS THAT MAY ALSO CAUSE HYPOTENSION 968
Hypoxemia 968
Hypercapnia 968
Intermittent Positive Pressure Ventilation 969
Local Anesthetics Used for Spinal or Epidural 969
Surgical Procedures and Position of Animal 969
Abdominal Distention 969
Closed Exhaust Valve on the Anesthetic Breathing System 969
Tension Pneumothorax 969
Electrolyte and Acid/Base Imbalances 969
Hypothermia 970
Pulmonary embolism 970
Hypersensitivity Reaction 970
BLOOD PRESSURE SUPPORT 970
Fluid Therapy 970
Anticholinergics 970
Atropine 971
Glycopyrrolate 971
Sympathomimetics 971
Mixed inotropes and vasopressors 971
Dopamine 971
Ephedrine 972
Norepinephrine 972
Epinephrine 972
Inotropes 972
Dobutamine 973
Vasopressors 973
Phenylephrine 973
Vasopressin 973
CARDIOVASCULAR ACTIONS OF DRUGS USED FOR PREANESTHETIC MEDICATION 973
Acepromazine 973
Benzodiazepines 973
α-2 Adrenergic Agonists 974
Xylazine 974
Medetomidine and dexmedetomidine 974
OPIOIDS 974
Morphine 974
Meperidine (Pethidine) 974
Methadone, Hydromorphone, Oxymorphone 974
Butorphanol and Buprenorphine 975
INDUCTION OF ANESTHESIA 975
INJECTABLE ANESTHETIC DRUGS 975
Thiopental 975
Propofol 975
Alfaxalone 976
Etomidate 976
Ketamine and Benzodiazepine Combinations 976
Tiletamine/Zolazepam Combination 976
INHALATIONAL ANESTHETIC DRUGS 976
Isoflurane and Sevoflurane 976
Nitrous Oxide 977
SUMMARY 977
REFERENCES 977
Inadvertent Perianesthetic Hypothermia in Small Animal Patients 983
Key points 983
INTRODUCTION 983
Physiology of Thermoregulation and the Response to Hypothermia 984
Core Versus Peripheral Temperature and Patterns of Heat Loss 986
Mechanisms of Heat Loss and Hypothermia 987
Anesthetic Effects on Body Temperature 988
Deleterious Effects of Hypothermia 988
INDICATIONS FOR TECHNIQUES TO MINIMIZE HYPOTHERMIA 989
TECHNIQUES AND MECHANISMS OF HEAT CONSERVATION 989
Passive Techniques 990
Active Techniques 990
Metabolic Techniques 990
COMPLICATIONS 991
SUMMARY 991
REFERENCES 991
Postoperative Hemostasis Monitoring and Management 995
Key points 995
INTRODUCTION 995
HEMOSTATIC RESPONSE TO SURGICAL STRESS 996
SURGICAL STRESS AND POSTOPERATIVE THROMBOPHILIA 996
POSTOPERATIVE HYPERCOAGULABILITY IN VETERINARY MEDICINE 997
COMORBIDITIES THAT CAN EXACERBATE SURGICAL STRESS 998
DIAGNOSING COAGULATION DISTURBANCES IN THE PERIOPERATIVE SETTING 999
PERIOPERATIVE ANTICOAGULANT THERAPY 1001
Parenteral Anticoagulants: Heparins 1001
SURGERY-SPECIFIC MODIFICATIONS 1002
RISKS ASSOCIATED WITH ANTICOAGULANT AND THROMBOLYTIC THERAPY 1003
PERIOPERATIVE PLANNING 1003
SUMMARY 1005
REFERENCES 1005
Analgesia in the Perioperative Period 1013
Key points 1013
INTRODUCTION 1013
WHY SHOULD I TREAT PERIOPERATIVE PAIN? 1013
HOW DO I DETERMINE IF MY PATIENT IS IN PAIN? 1014
HOW DO I CREATE AN ANALGESIC PLAN? 1015
WHICH OPIOID DO I CHOOSE? 1015
Tramadol and Tapentadol 1018
CHOOSING A NONSTEROIDAL ANTI-INFLAMMATORY DRUG 1018
HOW CAN I INCORPORATE A LOCAL ANESTHETIC? 1019
WOULD AN α2-AGONIST BE HELPFUL? 1020
WOULD AN ANALGESIC ADJUNCT BE BENEFICIAL? 1021
N-Methyl-d-Aspartate Antagonists 1022
Anticonvulsants 1022
Tricyclic Antidepressants 1023
Serotonin–Norepinephrine Reuptake Inhibitor 1023
Nonanalgesic Drugs 1024
WHAT NONPHARMACOLOGIC THERAPIES COULD BE INCORPORATED IN THE ANALGESIC PLAN? 1024
SUMMARY 1024
REFERENCES 1024
Nursing Care 1029
Key points 1029
INTRODUCTION 1029
DEVELOPING NURSING CARE PLANS 1029
Assessment 1030
Technician Conclusion (Analysis) 1030
Planning Care 1030
Implementation 1032
Evaluation 1032
RESPIRATORY NURSING CARE 1032
Artificial Airway Management 1032
Humidification 1034
Coupage 1034
Suctioning 1034
Tracheostomy site care 1036
Endotracheal tube care 1036
Oral care 1036
Complications 1037
Chest Tubes 1037
Chest tube care 1037
Chest Drainage 1038
Intermittent (manual) aspiration 1038
CONTINUOUS SUCTION/ASPIRATION 1038
NURSING CONSIDERATIONS 1039
CARDIOVASCULAR NURSING CARE 1040
Cardiovascular Monitoring Techniques 1040
Arterial blood pressure and continuous electrocardiographic monitoring 1040
Vascular Catheter Care and Maintenance 1040
Intravascular catheter maintenance 1040
Arterial catheter maintenance 1041
Constant rate infusions 1041
Nursing consideration 1041
RECUMBENT PATIENT CARE 1042
Decubital Ulcers 1042
Decubital ulcer prevention 1042
Lung Atelectasis 1043
Prevention and management of atelectasis 1044
Aspiration Pneumonia 1044
Prevention and management of aspiration pneumonia 1044
Bladder and Bowel Maintenance 1044
Nutrition 1045
RENAL NURSING CARE 1045
Ins and Outs 1045
Quantifying Urine Production 1045
Urinary Catheter Care and Maintenance 1046
Urinary catheter care 1046
Urinary collection system 1046
SUMMARY 1047
REFERENCES 1047
Wound Care 1049
Key points 1049
INTRODUCTION 1049
PHASES OF WOUND HEALING 1049
Inflammatory Phase: Time 0 1050
Debridement Phase: Time 6 to 12 Hours After Wound Initiation 1050
Repair Phase (Proliferation Phase): 3 to 12 Days After Wound Initiation 1051
Fibroplasia 1051
Angiogenesis 1052
Epithelialization 1052
Maturation Phase (Remodeling Phase): 7 Days to Several Months after Wound Initiation 1052
FACTORS AFFECTING WOUND HEALING 1052
Infection 1052
Location 1053
Nutrition 1053
Medications 1053
Metabolic Diseases 1054
Radiation Therapy 1054
Species Differences 1054
WOUND CARE 1054
Lavage 1054
Debridement 1055
Antibiotic Coverage 1055
Wound Environment 1056
WOUND CLOSURE 1057
Primary Closure 1057
Delayed Primary or Secondary Closure 1057
Second Intention Healing 1057
Negative Pressure Wound Therapy 1058
DRAINS 1058
BANDAGING 1058
Contact Layer 1059
Intermediate and Outer Layers 1061
NOVEL TREATMENTS 1061
SUMMARY 1063
REFERENCES 1063
Peri-Surgical Nutrition 1067
Key points 1067
NUTRITION IN HOSPITALIZED SURGICAL PATIENTS 1067
ENTERAL SUPPORT AND IMMUNONUTRITION 1068
Arginine 1068
Glutamine 1069
Omega-3 Fatty Acids 1069
OTHER POTENTIAL IMMUNONUTRIENTS 1070
The Impact of Immunonutrition in Human Patients 1070
Elective surgery patients 1070
Critically ill patients 1071
Immunonutrition in Veterinary Patients 1072
Assisted Enteral Nutrition 1073
Parenteral Support 1076
SUMMARY 1079
REFERENCES 1080
Index 1085