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Assisted Ventilation of the Neonate E-Book

Assisted Ventilation of the Neonate E-Book

Jay P. Goldsmith | Edward Karotkin | Gautham Suresh | Martin Keszler

(2016)

Additional Information

Book Details

Abstract

Extensively updated and featuring a new editorial team, the 6th Edition of Assisted Ventilation of the Neonate, by Drs. Jay P. Goldsmith, Edward Karotkin, Gautham Suresh, and Martin Keszler, continues to be a must-have reference for the entire NICU. Still the only fully comprehensive guide in this fast-changing area, it provides expert guidance on contemporary management of neonatal respiratory diseases, with an emphasis on evidence-based pharmacologic and technologic advances to improve outcomes and quality of life in newborns. A new full-color design and chapter layout combine for quick and easy reference.

  • Covers everything you need to know about respiratory management in neonates: general principles and concepts; assessment, diagnosis and monitoring methods; therapeutic respiratory interventions; adjunctive interventions; and special situations and outcomes.
  • Covers basic concepts of pulmonary pathophysiology and gives practical guidance on providing neonatal respiratory support with a variety of techniques, so you can learn both basic and advanced methods in one volume.
  • Offers more than 30 appendices that help you quickly find normal values, assessment charts, ICU flow charts, procedure steps and other useful, printable forms.
  • Reflects the rapid evolution of approaches to respiratory care, including the shift to non-invasive support, as well as changes in oxygenation targets, high-flow nasal therapy, volume ventilation, and sophisticated microprocessor-controlled ventilators.
  • Completely new information on many previously covered topics, including ethical and legal issues related to neonatal mechanical ventilation.
  • Features 11 entirely new chapters, including Radiography, Lung Ultrasound and Other Imaging Modalities; Non-invasive Monitoring of Gas Exchange; Airway Evaluation: Bronchoscopy, Laryngoscopy, Tracheal Aspirates; Special Ventilation Techniques; Cardiovascular Therapy and PPHN; and Quality Improvement in Respiratory Care .
  • Includes new opening summaries that highlight key information in each chapter.

Table of Contents

Section Title Page Action Price
Front Cover Cover
IFC\r ES1
ASSISTED VENTILATION OF THE NEONATE: AN EVIDENCE-BASED\rAPPROACH TO NEWBORN RESPIRATORY CARE\r i
ASSISTED VENTILATION OF THE NEONATE: AN EVIDENCE-BASED\rAPPROACH TO NEWBORN RESPIRATORY CARE\r iii
Copyright iv
Dedication v
CONTRIBUTORS vi
FOREWORD xi
PREFACE xii
CONTENTS xiii
I - History, Pulmonary Physiology, and General Considerations 1
1 - Introduction and Historical Aspects 1
HISTORY OF NEONATAL VENTILATION: EARLIEST REPORTS 1
SIXTEENTH AND SEVENTEENTH CENTURIES 2
NINETEENTH CENTURY 2
TWENTIETH CENTURY 3
BREAKTHROUGHS IN VENTILATION 5
RECENT ADVANCES AND OUTCOMES 7
REFERENCES 7
REFERENCES 7.e1
2 - Physiologic Principles* 8
BASIC BIOCHEMISTRY OF RESPIRATION: OXYGEN AND ENERGY 8
ONTOGENY RECAPITULATES PHYLOGENY: A BRIEF OVERVIEW OF DEVELOPMENTAL ANATOMY 9
Lung Development 9
Phases of Lung Development 9
Embryonic Phase (Weeks 3 to 6): Development of Proximal Airways 9
Pseudoglandular Phase (Weeks 6 to 16): Development of Lower Conducting Airways 9
Canalicular Phase (Weeks 16 to 26): Formation of Gas-Exchanging Units or Acini 9
Terminal Sac Phase (Weeks 26 to 36): Refinement of Acini 9
Alveolar Phase (Week 36 to 3Years): Alveolar Proliferation and Development 9
MECHANICS 9
Compliance 13
Static Compliance 13
Dynamic Compliance 13
Resistance 15
Flow Rate 15
Airway or Tube Length 15
Airway or Tube Diameter 16
Viscosity and Density 16
Work of Breathing 16
Time Constant 17
GAS TRANSPORT 18
Mechanisms of Gas Transport 18
OXYGENATION 21
Effects of Altering Ventilator Settings on Oxygenation 23
VENTILATION 24
Effects of Altering Ventilator Settings on Ventilation 26
PERFUSION 26
CONTROL OF VENTILATION 30
CONCLUSION 30
REFERENCES 30
REFERENCES 30.e1
3 - Control of Ventilation 31
INTRODUCTION 31
PATHOGENESIS OF APNEA OF PREMATURITY 31
Central (CO2) Chemosensitivity 31
Peripheral (Hypoxic) Chemosensitivity 31
Role of Mechanoreceptor (Laryngeal) Afferents 32
GENESIS OF CENTRAL, MIXED, AND OBSTRUCTIVE APNEA 32
RELATIONSHIP BETWEEN APNEA, BRADYCARDIA, AND DESATURATION 32
CARDIORESPIRATORY EVENTS IN INTUBATED INFANTS 32
THERAPEUTIC APPROACHES 33
Optimization of Mechanosensory Inputs 33
Optimization of Blood Gas Status 33
Role of Gastroesophageal Reflux 33
Xanthine Therapy 34
Continuous Positive Airway Pressure 34
LONGER TERM CONSEQUENCES OF NEONATAL APNEA 35
REFERENCES 35
REFERENCES 35.e1
4 - Ethical Issues in Assisted Ventilation of the Neonate 36
INTRODUCTION 36
HISTORICAL BACKGROUND 37
Initiating Ventilator Support 37
Withdrawal (Nonescalation) of Ventilator Support 37
Quality of Life 37
Medical Futility 38
Are These Debates Resolvable? 39
Chronic Ventilation 39
Appropriate Care after Withdrawal of Life Support 39
CONCLUSION 40
REFERENCES 40
REFERENCES 40.e1
5 - Evidence-Based Respiratory Care 41
BACKGROUND 41
THE TECHNICAL STEPS OF EBM 41
Formulating the Question 41
Searching for the Evidence 41
Evaluating Evidence about Therapy 42
Evaluating the Quality of Evidence 42
Determining the Quantitative Effects of a Therapy 43
Systematic Reviews of Therapeutic Interventions and Meta-analyses 45
Weighing Risks, Benefits, and Costs 45
Evaluating Evidence about Diagnostic Tests 45
Evaluating the Quality of Evidence for Diagnostic Tests 45
Determining Diagnostic Test Accuracy 46
Bayesian Reasoning in Diagnostic Testing 46
Special Considerations in Applying Evidence to Respiratory Interventions 47
COGNITIVE SKILLS FOR EVIDENCE-BASED PRACTICE 47
Critical Thinking 47
Clinical Reasoning and Decision Making 47
TRANSLATING EVIDENCE INTO PRACTICE 47
SUMMARY 48
REFERENCES 48
REFERENCES 48.e1
6 - Quality and Safety in Respiratory Care 49
QUALITY AND SAFETY: TERMINOLOGY AND FRAMEWORKS 49
Donabedian’s Triad 49
The Institute of Medicine’s Domains of Quality 49
ASSESSING AND MONITORING THE QUALITY OF CARE 50
QUALITY INDICATORS FOR COMPARATIVE PERFORMANCE MEASURES 50
QUALITY INDICATORS FOR IMPROVEMENT 50
IMPROVING THE QUALITY OF CARE 51
THE IMPROVEMENT TEAM 51
COLLABORATION 51
AIM: WHAT ARE WE TRYING TO ACCOMPLISH? 51
MEASUREMENT: HOW WILL WE KNOW THAT A CHANGE IS AN IMPROVEMENT? 51
WHAT CHANGES CAN WE MAKE THAT WILL RESULT IN AN IMPROVEMENT? 52
PLAN–DO–STUDY–ACT CYCLES 52
ENSURING THE SUCCESS OF QUALITY IMPROVEMENT PROJECTS 53
LEADERSHIP AND UNIT CULTURE 54
WHY IS QUALITY IMPROVEMENT IMPORTANT IN NEONATAL RESPIRATORY CARE? 54
EXAMPLES OF QUALITY AND SAFETY IMPROVEMENT IN NEONATAL RESPIRATORY CARE 54
Quality Improvement Projects in Individual Units 54
Collaborative Quality Improvement Projects 54
CONCLUSION 55
REFERENCES 55
REFERENCES 55.e1
7 - Medical and Legal Aspects of Respiratory Care 56
DISCLAIMER 56
GENERAL LEGAL PRINCIPLES 56
SUPERVISION OF OTHERS 56
MALPRACTICE 57
Duty 57
Breach 57
The Expert Witness 57
Causation 58
Damages 58
Burden of Proof 58
MALPRACTICE ISSUES SPECIFIC TO NEONATOLOGY AND NEONATAL RESPIRATORY CARE 58
Resuscitation 58
Prematurity/Periventricular Leukomalacia 58
RESPIRATORY FAILURE/MECHANICAL VENTILATION 59
Patient Safety/Culture of Safety 59
DECREASING THE RISK OF A MALPRACTICE LAWSUIT 59
Competency 59
Communication 59
Documentation 60
THE FUTURE OF MALPRACTICE LITIGATION 60
CONCLUSION 60
REFERENCES 60
REFERENCES 60.e1
II - Patient Evaluation, and Monitoring 61
8 - Physical Examination 61
HISTORICAL ASPECTS 61
IMPORTANCE OF THE PHYSICAL EXAMINATION 61
TECHNIQUE OF THE PHYSICAL EXAMINATION 61
Overview 61
Performing the Neonatal Respiratory Physical Examination 61
INTERPRETATION OF THE FINDINGS OF PHYSICAL EXAMINATION 62
General Physical Examination Findings 62
Special Technique of Examination: Transillumination 63
Examination at Birth 63
Examination of an Infant Receiving Face Mask or Laryngeal Mask Ventilation 64
Examination of a Ventilated Infant 64
. This section focuses on the essen 64
. A patient placed on high-frequency oscillatory ventilation (HFOV) may not breathe regularly, and auscultation of the chest may... 64
. A patient placed on the jet ventilator will have findings and interpretations similar to those on HFOV in terms of chest wiggl... 65
Examination of an Infant on CPAP 65
SUMMARY 65
REFERENCES 66
REFERENCES 66.e1
9 - Imaging: Radiography, Lung Ultrasound, and Other Imaging Modalities 67
INTRODUCTION 67
RADIATION EXPOSURE 67
IMAGING MODALITIES 67
Chest Radiograph 67
Ultrasound 68
Computed Tomography 68
Fluoroscopy 69
Magnetic Resonance Imaging 70
INVASIVE SUPPORT DEVICES 70
COMMON ETIOLOGIES OF RESPIRATORY DISTRESS IN INFANTS 71
Respiratory Distress Syndrome 71
Transient Tachypnea of the Newborn 72
Meconium Aspiration Syndrome 72
Pneumonia 73
Air-Leak Syndromes 74
Pneumothorax 74
Pneumomediastinum 74
Pneumopericardium 74
Pulmonary Interstitial Emphysema 75
Pulmonary Hemorrhage 75
Pleural Effusion 75
Bronchopulmonary Dysplasia 76
CONGENITAL AND SURGICAL CAUSES OF RESPIRATORY DISTRESS 76
Congenital Lung Lesions 76
Pulmonary Agenesis, Aplasia, and Hypoplasia 77
Bronchial Atresia or Stenosis 78
Congenital Pulmonary Airway Malformation 78
Bronchopulmonary Sequestration 78
Congenital Lobar Emphysema 78
Congenital Diaphragmatic Hernia 79
REFERENCES 79
REFERENCES 79.e2
10 - Blood Gases: Technical Aspects and Interpretation 80
BLOOD GAS PHYSIOLOGY 80
Oxygen Transport 80
Understanding the Oxyhemoglobin Dissociation Curve 82
Considerations Regarding Fetal Hemoglobin 82
Hypoxemia and Hypoxia 83
Carbon Dioxide Transport 84
Metabolic Acidosis 84
Metabolic Alkalosis 84
TECHNIQUES FOR OBTAINING BLOOD SAMPLES 84
Umbilical Artery Catheters 84
Subumbilical Cutdown 86
Complications of Umbilical Artery Catheterization 86
Other Indwelling Catheter Sites 87
Infusion of Fluids through Arterial Catheters 88
Arterial Puncture 88
Arterialized Capillary Blood 88
Continuous Invasive Monitoring 89
Noninvasive Estimation of Blood Gases 89
Pulse Oximetry 89
Transcutaneous Monitoring 90
Capnography 91
Near-Infrared Spectroscopy 91
CHOICE OF MONITORING METHODS 91
BLOOD GAS ANALYZERS 92
Measuring Principle of a Blood Gas Analyzer 92
Blood Gas Analyzer Quality Assurance 92
CLINICAL INTERPRETATION OF BLOOD GASES 92
COMPONENTS OF BLOOD GAS TESTING THAT ARE MEASURED DIRECTLY 92
pH 92
Carbon Dioxide 94
PaO2 94
COMPONENTS OF BLOOD GAS TESTING THAT ARE NOT MEASURED DIRECTLY 95
Anchor 372 95
Base Excess 95
Oxygen Saturation 95
Lactate 95
ERRORS IN BLOOD GAS MEASUREMENTS 95
ASSESSING THE ACCURACY OF A BLOOD GAS RESULT 96
FINAL THOUGHTS 96
ACKNOWLEDGEMENT 96
REFERENCES 96
REFERENCES 96.e1
11 - Noninvasive Monitoring of Gas Exchange 97
NONINVASIVE MONITORING OF OXYGENATION 97
Pulse Oximetry 97
Indications for Pulse Oximetry 99
Delivery Room Resuscitation 99
Limitations of Pulse Oximetry 101
Functional vs Fractional Saturation 101
Additional Considerations 101
Transcutaneous Oxygen Monitoring 102
NONINVASIVE ASSESSMENT OF PACO2 102
Capnography and End-Tidal CO2 Monitoring 102
Mainstream and Sidestream Capnography 103
CO2 Monitoring in the NICU 103
Capnography during Neonatal Anesthesia 104
Colorimetric CO2 Detectors 104
Optimizing Ventilation Settings with Capnography 104
Limitations of Capnography 104
Transcutaneous CO2 Monitoring 104
TISSUE OXYGEN SATURATION MONITORING USING NEAR-INFRARED SPECTROSCOPY 105
Normal Values 106
Application of Near-Infrared Spectroscopy in Newborns 106
Management of Hypotension 106
Patent Ductus Arteriosus 106
Cerebral Perfusion with Changes in Mean Airway Pressure and Ventilation 107
Mesenteric Ischemia and Risk of Necrotizing Enterocolitis 107
Limitations of Near-Infrared Spectroscopy 107
CONCLUSION 107
ACKNOWLEDGMENTS 107
REFERENCES 107
REFERENCES 107.e1
12 - Pulmonary Function and Graphics* 108
TECHNICAL ASPECTS 108
Pneumotachometers 108
Alternative Sensors 108
Signal Calibration 108
RESPIRATORY PHYSIOLOGY AND PATHOPHYSIOLOGY 109
MEASUREMENTS DISPLAYED ONPULMONARY GRAPHICS 110
Pressure Measurement 110
Instrumentation for Pressure Measurement 110
Volume Measurement 110
Pulmonary Graphic Representation of Tidal Volume 110
Flow Measurement (Inspiratory and Expiratory Airflow) 111
Minute Ventilation 111
Pressure–Volume Curve 111
Pulmonary Mechanics 112
Lung Compliance 112
Dynamic Compliance 112
Resistive Properties 112
Synchronous and Asynchronous Breathing 114
ROLE OF PULMONARY GRAPHICS IN VENTILATOR MANAGEMENT 114
Optimizing Peak Inspiratory Pressure 115
Optimizing End-Expiratory Pressure 115
Optimizing Expiratory Airflow 115
Optimizing Inspiratory Time 115
Optimizing Synchrony and Rate of Ventilatory Support 116
Optimizing Tidal Volume 116
Optimizing Inspiratory Oxygen 116
Permissive Hypercarbia 116
LIMITATIONS OF BEDSIDE PULMONARY GRAPHICS 116
NEWER TECHNIQUES 116
SUMMARY 117
CAVEATS 117
REFERENCES 117
REFERENCES 117.e1
13 - Airway Evaluation: Bronchoscopy, Laryngoscopy, and Tracheal Aspirates 118
INTRODUCTION 118
FLEXIBLE NASOPHARYNGOLARYNGOSCOPY IN THE NEONATE 118
Indications 118
Risks, Contraindications, and Limitations 118
Equipment 118
DIRECT MICROLARYNGOSCOPY AND RIGID BRONCHOSCOPY IN THE NEONATE 119
Indications 119
Risks, Contraindications, and Limitations 121
Equipment 121
FIBER-OPTIC FLEXIBLE BRONCHOSCOPY 121
Indications 121
Risks, Contraindications, and Limitations 122
Equipment 123
BRONCHOALVEOLAR LAVAGE AND TRACHEAL ASPIRATES 123
SUMMARY 123
REFERENCES 123
REFERENCES 123.e1
14 - Cardiovascular Assessment 124
INTRODUCTION 124
CARDIOVASCULAR CARE IN THE DELIVERY ROOM 124
Transitional Cardiovascular Physiology 124
Delayed Cord Clamping 124
APPROACH TO THE CARE OF THE NEONATE WITH COMPROMISED OXYGENATION 125
Physiology 125
Pulmonary Hypertension 125
Persistent Pulmonary Hypertension of the Newborn 125
Chronic Pulmonary Hypertension 125
Clinical Assessment 126
Cyanotic Congenital Heart Disease versus PPHN 126
Management 127
Resuscitation and General Management 128
Specific Pulmonary Vasodilator Therapies and the Role of Targeted Neonatal Echocardiography 128
APPROACH TO THE INFANTS WITH COMPROMISED SYSTEMIC HEMODYNAMICS 129
Physiology 129
Clinical Evaluation 131
Role of Targeted Neonatal Echocardiography 132
Management 133
Systolic Hypotension 133
Diastolic Hypotension 134
APPROACH TO THE INFANT WITH PATENT DUCTUS ARTERIOSUS 134
Pathophysiologic Continuum of the Ductal Shunt in Neonates 134
Clinical Importance of the Patent Ductus Arteriosus 134
Determining the Hemodynamic Significance of the Ductus Arteriosus 135
Echocardiography 135
. A ductal diameter ≥1.5mm on the first day of life predicts a subsequently symptomatic PDA.58 The transductal flow pattern perm... 135
. Left-heart dimensions and output, pulmonary artery diastolic velocities, and transmitral Doppler flow patterns are surrogate e... 136
. Diastolic flow reversal in the abdominal aorta is a reliable indicator of a hemodynamically significant PDA, which correlates ... 136
Management of a Hemodynamically Significant PDA 137
Conservative Management: Strategies to Limit Shunt Volume 137
Ductal Closure Strategies 137
. Early postnatal ductal patency is promoted by circulating PGE2, whose production from membrane phospholipids is catalyzed by s... 137
. The administration of intravenous prophylactic indomethacin to extremely preterm infants after birth reduces the risk of intra... 137
. Early treatment of infants with echocardiographically diagnosed but clinically asymptomatic PDA prevents the administration of... 137
. Contemporary randomized controlled trials have compared the efficacy of early (day 3) vs late (after day 7 to 10) treatment of... 138
. Surgical PDA ligation is reserved as rescue therapy after failure or contraindication to pharmacologic treatment, often for in... 138
. Adrenocortical insufficiency is common in preterm infants undergoing PDA ligation, and infants should undergo a preoperative a... 138
HEART–LUNG INTERACTIONS IN THE INTENSIVE CARE UNIT: THE EFFECTS OF MECHANICAL VENTILATION ON HEMODYNAMICS 138
Atrial Preload 138
Initiation and Augmentation of Mechanical Ventilation, Premedication, and Intravascular Volume 139
Left Ventricular Function and Afterload: The Effects of Intrathoracic Pressure 139
Pulmonary Hypertension and Overcirculation: Lung Volumes and Pulmonary Vascular Resistance 139
REFERENCES 139
REFERENCES 139.e1
III - Oxygen Therapy, and Respiratory Support 140
15 - Overview of Assisted Ventilation 140
UNIQUE CHALLENGES IN MECHANICAL VENTILATION OF NEWBORN INFANTS 140
Lung Mechanics 140
Uncuffed Endotracheal Tubes 141
Measurement of Tidal Volume 141
PRINCIPLES OF VENTILATOR DESIGN, FUNCTION, AND NOMENCLATURE 141
TEN MAXIMS FOR UNDERSTANDING MODES OF CONVENTIONAL VENTILATION 142
Defining a Ventilator Cycle 142
Defining the Assisted Breath 142
Assistance with Volume or Pressure Control 142
Trigger and Cycle Events 142
Machine versus Patient Trigger and Cycle Events 143
Spontaneous versus Mandatory “Breaths” 143
Breath/Inflation Sequences 143
Ventilatory Patterns 144
Targeting Schemes 144
Mode Classification 145
INITIATION OF MECHANICAL VENTILATION 146
Indications for Mechanical Ventilation 146
Choosing the Ventilator Mode 146
Initial Settings for Pressure-Controlled Ventilation 149
Assessment after Starting Ventilation 149
Subsequent Ventilator Adjustments 151
Oxygenation 151
Ventilation/CO2 Elimination 151
MONITORING AND DOCUMENTATION DURING MECHANICAL VENTILATION 151
VENTILATION PROTOCOLS 152
REFERENCES 152
REFERENCES 152.e1
16 - Oxygen Therapy 153
HISTORY OF THE USE OF OXYGEN IN CLINICAL MEDICINE 153
BASIC PRINCIPLES OF OXYGEN PHYSIOLOGY 153
Aerobic Metabolism 153
Reactive Oxygen Species, Redox Regulation, and Antioxidant Enzymes 154
Redox Regulation 154
Antioxidant Defenses 155
Biomarkers of Oxidative Stress 155
Oxygen-Sensing Mechanisms and Physiologic Response 156
OXYGEN IN THE FETAL-TO-NEONATAL TRANSITION AND POSTNATAL ADAPTATION 156
Fetal-to-Neonatal Transition 156
Arterial Oxygen Saturation Nomogram 157
Oxygen Saturation in Preterm Infants with Positive Pressure Ventilation and Air 158
Oxygen Administration in the Delivery Room 158
Oxygen During Neonatal Care in the Neonatal Intensive Care Unit 159
Evolving Oxygen Needs in the First Weeks of Life and New Metabolic Indices 160
Going Home on Oxygen 160
Oxygen Saturation Recommendations 161
REFERENCES 161
REFERENCES 161.e1
17 - Non-invasive Respiratory Support 162
BACKGROUND AND HISTORICAL ASPECTS 162
PHYSIOLOGIC EFFECTS OF CPAP 164
CLINICAL MANAGEMENT OF PATIENTS ON NASAL CPAP 164
METHODS OF GENERATING CONTINUOUS DISTENDING PRESSURE 165
NASAL AIRWAY INTERFACES 167
CLINICAL USE OF CPAP: RANDOMIZED, CONTROLLED TRIALS 170
Early CPAP with Rescue Surfactant 170
Conclusion 172
NONINVASIVE VENTILATION 172
Neurally Adjusted Ventilatory Assist 173
NASAL HIGH-FREQUENCY VENTILATION 174
Nasal CPAP or Noninvasive Ventilation for Apnea 174
COMPLICATIONS OF NONINVASIVE SUPPORT 174
Malpositioned Nasal Cannulae 174
Inadvertent Positive End-Expiratory Pressure 174
Carbon Dioxide Retention 175
Decreased Gastrointestinal Blood Flow 175
Skin Trauma 175
CONTRAINDICATIONS TO NASAL CPAP 176
DETERMINING OPTIMAL LEVELS OF NASAL CPAP 176
WEANING FROM CPAP 176
HUMIDIFIED HIGH-FLOW NASAL CANNULA 177
SUMMARY 179
REFERENCES 179
REFERENCES 179.e1
18 - Basic Modes of Synchronized Ventilation 180
INTRODUCTION 180
TRIGGER TECHNOLOGY 180
BASIC SYNCHRONIZED MODES 182
Patient–Ventilator Interactions with Synchronized Ventilation 182
Synchronized Intermittent Mandatory Ventilation 182
Assist Control 183
Pressure-Support Ventilation 184
CHOICE OF ASSISTED VENTILATION MODES 186
GUIDELINES FOR CLINICAL APPLICATION 186
Synchronized Intermittent Mandatory Ventilation 186
Assist Control 186
Pressure-Support Ventilation 187
CONCLUSION 187
REFERENCES 187
REFERENCES 187.e1
19 - Principles of Lung-Protective Ventilation 188
INTRODUCTION 188
NEONATAL RESPIRATORY FAILURE 188
VENTILATOR-INDUCED LUNG INJURY 188
Risk Factors for VILI 188
Volutrauma 188
Atelectrauma 188
Oxygen Toxicity 189
Pulmonary and Systemic Consequences of VILI 189
Structural Injury 189
Biotrauma 189
Surfactant Dysfunction 189
Lung Development 190
Susceptibility of Newborn Lungs to VILI 190
LUNG-PROTECTIVE VENTILATION: BASIC PRINCIPLES 190
Minimizing Volutrauma 190
Minimizing Atelectrauma 190
LUNG-PROTECTIVE VENTILATION: CONVENTIONAL MECHANICAL VENTILATION 191
Low Tidal Volume Ventilation 191
Tidal Volume Stabilization 192
Permissive Hypercarbia 192
Open Lung Ventilation 192
LUNG-PROTECTIVE VENTILATION: HIGH-FREQUENCY VENTILATION 193
LUNG-PROTECTIVE VENTILATION: WEANING AND EXTUBATION 194
IMPLICATIONS FOR PRACTICE AND RESEARCH 194
REFERENCES 194
REFERENCES 194.e1
20 - Tidal Volume-Targeted Ventilation 195
RATIONALE FOR TIDAL VOLUME-TARGETED VENTILATION 195
VOLUME-CONTROLLED VERSUS VOLUME-TARGETED VENTILATION 196
NEONATAL TIDAL VOLUME-TARGETED VENTILATION 197
VOLUME GUARANTEE 197
SUGGESTED CLINICAL GUIDELINES (SEE ALSO TABLE 20-2) 199
PRESSURE-REGULATED VOLUME CONTROL 201
VOLUME VENTILATION PLUS 201
VOLUME-TARGETED VENTILATION 202
TARGETED TIDAL VOLUME 202
VOLUME LIMIT 202
IMPORTANCE OF OPEN LUNG STRATEGY 202
ALARMS/TROUBLESHOOTING 202
CONCLUSION 202
REFERENCES 204
REFERENCES 204.e1
21 - Special Techniques of Respiratory Support 205
INTRODUCTION 205
CLOSED-LOOP CONTROL OF INSPIRED OXYGEN 205
VENTILATION TECHNIQUES 206
Proportional Assist Ventilation 206
NEURALLY ADJUSTED VENTILATORY ASSIST 207
Airway Pressure Release Ventilation 208
Targeted Minute Ventilation 208
Mandatory Minute Ventilation 209
Apnea Backup Ventilation 209
Adaptive Backup Ventilation 209
Adaptive Support Ventilation 209
Techniques to Reduce Dead Space 210
Continuous Tracheal Gas Insufflation 210
Washout of the Flow Sensor 210
Split-Flow Ventilation 210
SUMMARY 210
REFERENCES 210
REFERENCES 210.e1
22 - High-Frequency Ventilation 211
TYPES OF HIGH-FREQUENCY VENTILATORS 211
Determinants of Gas Transport during Mechanical Ventilation 211
High-Frequency Jet Ventilators 213
High-Frequency Oscillators 214
High-Frequency Flow Interrupters 214
CLINICAL APPLICATIONS OF HIGH-FREQUENCY VENTILATION 218
Elective versus Rescue High-Frequency Ventilation 218
Lung Protective Strategies with HFV: Limiting Pressure While Optimizing Volume 220
APPLICATIONS OF HIGH-FREQUENCY VENTILATION IN SPECIFIC DISEASES 221
Respiratory Distress Syndrome 221
Air-Leak Syndromes 221
Pulmonary Hypoplasia, Persistent Pulmonary Hypertension, and Inhaled Nitric Oxide 222
CLINICAL GUIDELINES 222
Limiting Pressure Exposure 223
High-Frequency Jet Ventilators 223
High-Frequency Oscillatory Ventilators 223
Optimizing Lung Volume 224
High-Frequency Jet Ventilators 224
High-Frequency Oscillatory Ventilators 225
PROBLEMS, COMPLICATIONS, AND QUESTIONS WITHOUT ANSWERS 226
SUMMARY 227
REFERENCES 228
REFERENCES 228.e1
23 - Mechanical Ventilation: Disease-Specific Strategies 229
RESPIRATORY DISTRESS SYNDROME 229
Key Pathophysiologic Features (Table 23-1) 229
Surfactant 229
Lung Liquid 229
Developmental Lung Biology 229
Relevant Principles of Ventilation 230
High-Frequency Ventilation 231
Conventional Ventilation 231
Extubation 231
Evidence-Based Recommendations 233
Gaps in Knowledge 233
MECONIUM ASPIRATION SYNDROME 233
Key Pathophysiologic Features 233
Surfactant Dysfunction 233
Airway Resistance 234
Pulmonary Hypertension 234
Relevant Principles of Ventilation 234
High-Frequency Ventilation 234
Conventional Ventilation 235
Evidence-Based Recommendations 236
Gaps in Knowledge 236
CONGENITAL DIAPHRAGMATIC HERNIA AND LUNG HYPOPLASIA DISORDERS 236
Key Pathophysiologic Features 236
Lung Hypoplasia 236
Pulmonary Vascular Bed 237
Cardiac Development 237
Relevant Principles of Ventilation 237
Pulmonary Hypertension 238
Evidence-Based Recommendations 238
Gaps in Knowledge 238
Key Pathophysiologic Features 239
Lung Pathology 239
Lung Mechanics and Function 240
Relevant General Principles of Mechanical Ventilation 240
Tracheostomy 241
Pulmonary Hypertension 241
Evidence-Based Recommendations 242
Gaps in Knowledge 242
SUMMARY 242
REFERENCES 242
REFERENCES 242.e1
24 - Weaning from Mechanical Ventilation 243
BACKGROUND 243
WEANING FROM VENTILATORY SUPPORT 243
WEANING FROM PRESSURE-LIMITED VENTILATION 244
WEANING FROM HIGH-FREQUENCY VENTILATION 244
GENERAL STRATEGIES TO FACILITATE WEANING 245
Permissive Hypercarbia 245
Permissive Hypoxemia 246
WEANING PROTOCOLS 246
ADJUNCTIVE THERAPIES 246
Caffeine 246
Diuretics 246
Closure of Patent Ductus Arteriosus 247
Avoidance of Routine Sedation 247
Nutritional Support 247
Chest Physiotherapy 247
Systemic Corticosteroids 247
Inhaled Corticosteroids 247
ASSESSMENT OF EXTUBATION READINESS 247
Lung Mechanics and Minute Ventilation 248
Clinical Assessment: Spontaneous Breathing Trials 248
Analysis of the Dynamics of Physiologic Signals Prior to Extubation 248
POSTEXTUBATION MANAGEMENT 249
Adjunctive Therapies 249
Caffeine 249
Nebulized Racemic Epinephrine and Dexamethasone 249
Postnatal Corticosteroids for the Prevention and Treatment of Postextubation Stridor 249
Chest Physiotherapy 249
EXTUBATION FAILURE 250
SUMMARY 250
REFERENCES 250
REFERENCES 250.e1
25 - Description of Available Devices 251
INTRODUCTION TO VENTILATORS 251
Power Inputs 251
Power Conversion and Control 251
Flow Control Valves 251
Power Outputs 252
Idealized Pressure, Volume, and Flow Waveforms 253
Ventilator Alarm Systems 253
Operator–Ventilator Interface: Displays 253
Alphanumeric Values 253
Trends 254
Waveforms and Loops 254
Patient–Ventilator Interface: Circuits 254
UNDERSTANDING MODES OF VENTILATION 255
Defining a Breath/Inflation 255
Assistance with Volume or Pressure Control 255
UNIVERSAL INTENSIVE CARE VENTILATORS USED FOR NEONATAL VENTILATION 256
CareFusion AVEA 257
Description 257
Operator Interface 257
Modes 257
. Airway pressure is maintained at a relatively high level for most of the respiratory cycle with intermittent release to a lowe... 260
. When Artificial Airway Compensation is turned on, the ventilator calculates the pressure at the airway opening required to del... 260
. All spontaneous breaths are pressure supported if the pressure support level is set above zero 261
. All spontaneous breaths are pressure supported: When a patient-triggered inflation exceeds the set volume limit, inflation is ... 261
. This is available for the neonatal patient size setting only. This mode is designed to work with standard two-limbed neonatal ... 261
. This mode is available for the neonatal patient size setting only. It is designed to work with standard two-limbed neonatal pa... 261
. All inspiratory efforts trigger a pressure-controlled inflation (provided the ventilator detects the effort). A preset frequen... 261
. Activation of flow cycle makes every inflation patient cycled. A backup rate will trigger the ventilator at the preset rate in... 261
. All inspiratory efforts trigger a pressure-controlled inflation. In this mode the ventilator switches from PC to VC if inflati... 261
. This mode is available for the neonatal patient size setting only 261
. Pressure-regulated volume control (PRVC) delivers pressure-controlled inflations that support every breath for which the press... 261
. This mode is as above, but flow cycled 261
. This mode is as above, but only a preset number of mandatory breaths is delivered in synchrony with inspiratory efforts (if pr... 261
. This mode is as above, but with time, not flow, cycling 261
. This mode is pressure-controlled SIMV 261
. The volume guarantee is the same as with A/C. Mandatory inflations are delivered at a preset rate and synchronized with inspir... 261
. Every inspiratory effort triggers a time-cycled pressure-limited inflation. Pressure-limited modes are flow controlled with a ... 261
. Every inspiratory effort triggers a flow-cycled pressure-limited inflation. This mode is equivalent to pressure support on oth... 261
IV - Initial Stabilization, Bedside Care, and Pharmacologic Adjuncts\r 275
26 - Delivery Room Stabilization, and Respiratory Support 275
INTRODUCTION 275
PHYSIOLOGY OF TRANSITION, ASPHYXIA, AND RESUSCITATION 275
Physiology of Normal Transition 275
Physiology of Asphyxia 275
Physiology of Resuscitation 276
ANTICIPATION AND PREPARATION FOR RESUSCITATION 276
Training 276
Teamwork 276
Anticipation 277
Preparation 277
CLINICAL ASSESSMENT, APGAR SCORE, SATURATION, AND HEART RATE MONITORING 278
Clinical Evaluation 278
Pulse Oximetry and Electrocardiography 278
INTERVENTION BASICS: WARMTH, POSITION, SUCTION, STIMULATION 278
Warmth 278
Position 279
Suction 279
Meconium-Stained Amniotic Fluid 279
Stimulation 279
OXYGEN 279
VENTILATION 279
PRESSURE SOURCES 280
INTERFACES 281
ENDOTRACHEAL INTUBATION 282
INTUBATION EQUIPMENT AND PROCEDURE 282
LARYNGEAL MASK AIRWAY 283
MONITORING 284
CHEST COMPRESSIONS 284
EPINEPHRINE 287
VOLUME EXPANSION 288
SPECIAL CASES 288
Preterm Neonates 288
Congenital Diaphragmatic Hernia 288
Fetal Hydrops 288
ETHICS 289
Deciding Whether to Commence Resuscitation 289
Deciding Whether to Stop Resuscitation 289
POSTRESUSCITATION CARE 290
Examination/Monitoring 290
Therapeutic Hypothermia for Hypoxic–Ischemic Encephalopathy 290
REFERENCES 290
REFERENCES 290.e1
27 - Respiratory Care of the Newborn 291
TECHNIQUES TO PROVIDE POSITIVE-PRESSURE VENTILATION 291
Manual Ventilation 291
Face Masks for Ventilation 292
Endotracheal Intubation 292
Routes of Intubation 293
Equipment 294
Types of Tubes 294
Depth of Tube Insertion 295
Determination of Placement 295
Tube Fixation 295
Acquisition and Maintenance of Intubation Skills 296
Laryngeal Mask Airway 298
NONINVASIVE VENTILATION AND CONTINUOUS POSITIVE AIRWAY PRESSURE 298
HEATED HUMIDIFIED HIGH-FLOW NASAL CANNULA 298
MONITORING DURING RESPIRATORY SUPPORT 298
Monitoring during Noninvasive Respiratory Support 298
Monitoring during Conventional and High-Frequency Ventilation 299
HUMIDIFICATION AND WARMING DURING RESPIRATORY SUPPORT 300
AIRWAY CLEARANCE TECHNIQUES 301
Chest Physiotherapy 303
Positioning of the Patient 304
Percussion and Vibration 304
ADMINISTRATION OF MEDICATIONS INTO THE RESPIRATORY TRACT 306
Surfactant Treatment 306
Surfactant Administration 306
Optimization of Aerosol Drug Delivery 307
CLINICIAN-BASED VENTILATOR AND WEANING PROTOCOLS 308
RESUSCITATION AND STABILIZATION AT DELIVERY 309
REFERENCES 309
REFERENCES 309.e1
28 - Nursing Care\r 310
ASSESSMENT OF THE NEONATE 310
PAIN ASSESSMENT 311
RESPIRATORY CARE 311
Oxygen Saturation Monitoring 312
Positioning and Containment 312
Nasal Continuous Positive Airway Pressure 313
Mechanical Ventilation 313
Airway Security 314
Endotracheal Tube Movement and Malposition 314
Suctioning 314
Ventilator-Associated Pneumonia 316
High-Frequency Ventilation 316
Inhaled Nitric Oxide 317
Sudden Deterioration 317
GENERAL CARE OF THE NEONATE 317
Thermal Instability 317
Nutrition 318
Skin Care 318
Adhesive Application and Removal 318
Pressure Ulcers and Skin Breakdown 319
Managing Pain 319
Developmental Care 320
Skin-to-Skin Holding 320
CARE OF THE FAMILY 320
SUMMARY 321
REFERENCES 321
REFERENCES 321.e1
29 - Nutritional Support 322
NUTRITIONAL REQUIREMENTS 322
Water Requirement 322
Insensible Water Loss 322
Renal Water Excretion 322
Energy Requirement 323
Protein Requirement 323
Lipid Requirement 324
Carbohydrate Requirement 324
Mineral Requirements 325
Vitamin Requirements 326
PARENTERAL NUTRITION 326
Intravenous Access 327
Composition of Total Parenteral Nutrition 327
ENTERAL NUTRITION 327
Advantages of Enteral Nutrition 328
Methods of Gavage Feeding 328
Minimal Enteral Feedings and Enteral Feeding Advancement 328
Composition of Enteral Nutrition 328
Human Milk 328
Donor Human Milk 329
Formulas 329
SPECIAL NUTRITIONAL CONSIDERATIONS FOR INFANTS WITH BRONCHOPULMONARY DYSPLASIA 329
REFERENCES 329
REFERENCES 329.e1
30 - Complications of Respiratory Support 330
INTRODUCTION 330
EPIDEMIOLOGY 330
PATHOGENESIS 331
MICROBIOLOGY 334
DIAGNOSIS 334
PREVENTION 335
TREATMENT 336
CONCLUSION 337
REFERENCES 337
REFERENCES 337.e1
31 - Pharmacologic Therapies I: Surfactant Therapy 338
HISTORY 338
SURFACTANT FUNCTION, COMPOSITION, AND METABOLISM 338
Function 338
Composition 338
Secretion and Metabolism 338
TYPES OF SURFACTANT 339
Animal-Derived Surfactants 339
Synthetic Surfactants without Protein Components 339
Protein-Containing Synthetic Surfactants 340
ACUTE PULMONARY AND CARDIAC EFFECTS OF SURFACTANT THERAPY 340
Immediate Pulmonary Effects of Surfactant Therapy 340
Immediate Effects on Pulmonary Circulation 340
Radiographic Changes 340
CLINICAL TRIALS OF SURFACTANT THERAPY 340
Surfactant Therapy Compared to Placebo or No Therapy 340
Prophylactic Surfactant Administration Compared to Postbirth Stabilization on Continuous Positive Airway Pressure and Selective ... 341
Early Surfactant Administration Followed Immediately by Extubation to Nasal Continuous Positive Airway Pressure 342
Targeted Surfactant Therapy 343
Single versus Multiple Surfactant Doses 343
Criteria for Repeat Doses of Surfactant 343
METHODS OF ADMINISTRATION OF SURFACTANT 343
Administration through Catheter, Side Port, or Suction Valve 343
Administration through Dual-Lumen Endotracheal Tube 344
Administration through a Laryngeal Mask Airway 344
Nasopharyngeal Administration of Surfactant 344
Thin Catheter Endotracheal Administration (Less-Invasive Surfactant Administration) 344
Other Methods 344
Chest Position during Administration of Surfactant 345
Summary of Administration Methods 345
CHOICE OF SURFACTANT PRODUCT 345
Comparison of Animal-Derived Surfactant Extract versus Protein-Free Synthetic Surfactant for the Prevention and Treatment of Res... 345
Comparison of Different Types of Bovine Surfactants 346
Comparison of Porcine and Bovine Surfactants 346
ADVERSE EFFECTS OF SURFACTANT THERAPY 346
ECONOMIC ASPECTS OF SURFACTANT THERAPY 346
FACTORS AFFECTING THE RESPONSE TO SURFACTANT THERAPY 347
LONG-TERM OUTCOMES AFTER SURFACTANT THERAPY 347
Neurodevelopmental Outcomes 347
Long-Term Respiratory Outcomes 347
Physical Growth 347
Outcomes of Prophylactic versus Rescue Treatment Strategies 347
EXOGENOUS SURFACTANT THERAPY FOR CONDITIONS OTHER THAN RESPIRATORY DISTRESS SYNDROME 348
Meconium Aspiration Syndrome 348
Acute Respiratory Distress Syndrome 348
Other Conditions 348
CONCLUSION 348
REFERENCES 348
REFERENCES 348.e1
32 - Pharmacologic Therapies II: Inhaled Nitric Oxide 349
BACKGROUND 349
PHYSIOLOGY OF NITRIC OXIDE IN THE PULMONARY CIRCULATION 351
INITIAL EVALUATION OF THE TERM NEWBORN FOR INHALED NITRIC OXIDE THERAPY 351
History 353
Physical Examination 353
Interpretation of Pulse Oximetry Measurements 354
Laboratory and Radiologic Evaluation 354
Response to Supplemental Oxygen 354
Echocardiography 354
WHOM TO TREAT 355
Diseases 355
Clinical Criteria 356
Gestational and Postnatal Age 356
Severity of Illness 356
Treatment Strategies 357
Delivery of Nitric Oxide during Mechanical Ventilation 357
Dose 357
Duration of Treatment 357
Weaning 357
Discontinuation of Inhaled Nitric Oxide Therapy 357
Monitoring 358
Ventilator Management 358
ROLE OF INHALED NITRIC OXIDE IN NEWBORNS WITH CONGENITAL DIAPHRAGMATIC HERNIA 359
THE PREMATURE NEWBORN 359
SUMMARY 361
REFERENCES 361
REFERENCES 361.e1
33 - Pharmacologic Therapies III: Cardiovascular Therapy and Persistent Pulmonary Hypertension of the Newborn 362
INTRODUCTION 362
NORMAL TRANSITION 362
HEMODYNAMIC PROBLEMS IN THE NEONATE 363
Persistent Pulmonary Hypertension of the Newborn 363
Clinical Evaluation 363
Intervention 363
Specific Therapy 363
Cardiovascular Support 363
Research Needs 363
Septic Shock 363
Clinical Evaluation 364
Research Needs 364
Hypoxic–Ischemic Encephalopathy 364
Cardiogenic Shock 364
Hypotension in the Extremely Low Gestational Age Newborn 365
CONCLUSION 365
REFERENCES 365
REFERENCES 365.e1
34 - Pharmacologic Therapies IV: Other Medications 366
INTRODUCTION 366
STEROIDS 366
Early Postnatal (<8Days) Steroid Therapy for Prevention of Bronchopulmonary Dysplasia 366
Late (≥8Days) Postnatal Steroid Therapy for Prevention or Therapy of Bronchopulmonary Dysplasia in Preterm Infants 367
SEDATION AND ANALGESIA 367
Opioids 368
Morphine 369
Fentanyl 370
Dexmedetomidine 370
Benzodiazepines 371
Midazolam 371
Lorazepam 372
Diazepam 372
Other Sedative Agents 372
MUSCLE RELAXANTS 372
Pancuronium 373
Vecuronium 373
Rocuronium 374
Cisatracurium 374
BRONCHODILATORS AND MUCOLYTIC AGENTS 374
Albuterol (Salbutamol) 374
Cromoglycic Acid 375
Ipratropium Bromide 375
Racemic Epinephrine 375
N-Acetylcysteine 375
Combination Therapies 376
DIURETICS 376
Furosemide 376
Bumetanide 377
Thiazides and Potassium-Sparing Diuretics 377
RESPIRATORY STIMULANTS 377
Theophylline 378
Caffeine 378
Doxapram 378
SUMMARY 379
REFERENCES 379
REFERENCES 379.e1
V - Respiratory and Neurologic Outcomes, Surgical Interventions, and Other Considerations 380
35 - Management of the Infant with Bronchopulmonary Dysplasia 380
INTRODUCTION 380
EPIDEMIOLOGY, PATHOPHYSIOLOGY AND DIAGNOSIS OF BRONCHOPULMONARY DYSPLASIA 380
CLINICAL PRESENTATION OF ESTABLISHED BRONCHOPULMONARY DYSPLASIA 381
Severe Lung Parenchyma Disease as the Leading Feature of Severe Bronchopulmonary Dysplasia 382
Pulmonary Hypertension as the Leading Feature of Severe Bronchopulmonary Dysplasia 382
Airway Disease as the Leading Feature of Severe Bronchopulmonary Dysplasia 383
PHYSIOLOGIC BASIS FOR RESPIRTORY SUPPORT IN INFANTS WITH ESTABLISHED BRONCHOPULMONARY DYSPLASIA 383
Ventilatory Control in Infants with Bronchopulmonary Dysplasia 383
Pulmonary Mechanics in Infants with Bronchopulmonary Dysplasia 383
RESPIRATORY MANAGEMENT IN INFANTS WITH ESTABLISHED BRONCHOPULMONARY DYSPLASIA 383
Noninvasive ventilation 383
Mechanical Ventilation 384
Conventional Mechanical Ventilation 384
. Because volutrauma has been associated with the development of lung injury, volume-targeted ventilation has been advocated in ... 385
. The majority of patients with sBPD have heterogeneous lung disease (see Fig. 35-3, B), with both collapsed and overinflated ar... 385
. Setting an appropriate PEEP is an important component of ventilator management. An appropriate level of PEEP can increase FRC,... 386
. High-frequency ventilation (HFV) delivers very small VTs with rapid rates. This may avoid large volume changes associated with... 387
ADJUNCT THERAPIES FOR THE RESPIRATORY SUPPORT OF INFANTS WITH ESTABLISHED BRONCHOPULMONARY DYSPLASIA 387
Heliox 387
Pharmacotherapy 387
Management of Pulmonary Hypertension 388
Management of Patent Ductus Arteriosus 389
Nutritional Support 389
Minimizing Pulmonary Microaspiration 389
Role of Tracheostomy in Infants Requiring Long-Term Support 390
PULMONRY OUTCOMES IN INFANTS WITH BRONCHOPULMONARY DYSPLASIA 390
CONCLUSIONS 390
REFERENCES 390
REFERENCES 390.e1
36 - Medical and Surgical Interventions for Respiratory Distress and Airway Management 391
INTRODUCTION 391
MEDICAL MANAGEMENT OF THE NEONATAL AIRWAY 391
ANATOMIC DISADVANTAGES OF THE NEONATAL AIRWAY 391
MEDICAL MANAGEMENT OF NEONATES WITH COMMON RESPIRATORY DISORDERS REQUIRING SURGICAL INTERVENTION 392
Congenital Airway Disorders 392
Acquired Airway Disorders 392
SURGICAL MANAGEMENT OF THE NEONATAL AIRWAY 393
THE PEDIATRIC SURGEON/OTOLARYNGOLOGIST AS DIAGNOSTICIAN AND THERAPIST 393
Developmental Abnormalities of the Airway 393
Tracheal Obstruction 393
. The presence of stridor signals a need for urgent diagnosis and possible intervention due to the narrow size of the infant air... 393
. Choanal atresia, a rare anomaly, with a reported incidence of 1 in 8000 births, involves occlusion of the posterior nares by a... 394
Oropharyngeal Obstruction 394
. The tongue is often a site of obstruction. Stridor in a neonate can occur if the tongue is disproportionately larger than the ... 394
. Severe hypoglycemia, in many cases secondary to hyperinsulinemia, initially brought these examples of infantile gigantism to m... 394
. Several neonatal metabolic disorders cause macroglossia and result in congenital stridor, the best known of which are hypothyr... 394
. Children affected by Down syndrome are easily identified by their constellation of abnormalities. Their relative macroglossia ... 395
. Lingual thyroid can be a rare cause of oropharyngeal obstruction.22–24 Stertor in the presence of hypothyroidism, detected by ... 395
. Although not generally reported and not often appreciated, macroglossia can develop in infants with severe bronchopulmonary dy... 395
. The craniofacial dysmorphology syndromes range from unusual to extremely rare. All result in an obstruction located in the oro... 395
. Pierre Robin syndrome26-31 represents the most common craniofacial dysmorphology with micrognathia and glossoptosis. In additi... 395
. Treacher Collins syndrome,32 also known as mandibulofacial dysostosis, is a variable and diffuse group of craniofacial anomali... 395
. The Hallermann-Streiff syndrome33,34 is a rare syndrome that consists of microphth 395
. Infants with the Möbius syndrome35,36 have a characteristic absence or maldevelopment of various cranial nerve nuclei. Cranial... 395
. Infants with Freeman-Sheldon syndrome37,38 are often called “whistling-faced” children. They have hypoplastic alae nasi, clubb... 395
. Nager syndrome39–44 is a rare acrofacial dysostosis that presents with upper limb malformation, mandibular and malar hypoplasi... 396
. An infant’s larynx is the next site of possible obstruction, and laryngeal anomalies account for the majority of cases of stri... 397
. The most extreme form of obstruction at this level, laryngeal atresia, results in a desperate emergency during the first few m... 397
. Laryngeal webs account for approximately 5% of laryngeal anomalies (Fig. 36-5). These lesions arise about the 10th week of int... 397
. Congenital vocal cord paralysis is the second most common cause of congenital stridor. In the past, birth trauma was frequentl... 397
. Laryngomalacia is the most common cause of congenital stridor, accounting for 60% to 75% of cases of stridor in newborns. It a... 397
. The overall incidence of congenital subglottic stenosis is unknown because many such cases remain undiagnosed. It has been est... 398
. Acquired subglottic stenosis is most often caused by prolonged endotracheal intubation. Because of the increased survival of n... 398
. Although laryngeal clefts were once considered extremely rare lesions, they have frequently been reported since 1990.55 This i... 398
. Hemangiomas are another cause of congenital subglottic obstruction. The onset of symptoms is variable, as symptomatology is re... 398
Tracheal Anomalies 399
. Tracheal stenosis can involve either a short stenotic segment in an otherwise normal trachea or the entire trachea with a cyli... 399
. The necrotizing tracheobronchitis lesion is mainly of historical interest after having been reported in two relatively large s... 399
Extrinsic Tracheal Compression 400
. Vascular rings arise from anomalous form 400
Developmental Abnormalities of the Lung 400
Pulmonary and Lobar Agenesis 400
Pulmonary Hypoplasia 400
Congenital Lobar Emphysema 401
Congenital Cystic Adenomatoid Malformation 401
Sequestration 401
Pulmonary Cystic Lesions 402
Developmental Abnormalities of the Diaphragm 402
Diaphragmatic Hernia of Bochdalek 402
Diaphragmatic Paralysis/Eventration 402
Developmental Abnormalities of the Skeleton 402
THE PEDIATRIC SURGEON/OTOLARYNGOLOGIST AS CONSULTANT 403
Neonatal Bronchoscopy 403
Anatomic Considerations 403
Pathophysiology 403
Evaluation of Intubation 403
Endoscopes 403
Tracheostomy 403
Procedure 404
Anterior Cricoid Split Procedure 405
Tracheostomy Tubes 405
REFERENCES 406
REFERENCES 406.e1
37 - Intraoperative Management of the Neonate 407
TRANSITIONAL PHYSIOLOGY AND PULMONARY HYPERTENSION 407
Key Points 408
PULMONARY DEVELOPMENT AND LUNG INJURY 408
Key Points 409
ANATOMIC CONSIDERATIONS 409
Intrathoracic Masses 409
Abdominal Wall Defects 410
Key Points 410
LOCATION OF OPERATION 410
Premedication for Intubation 410
Selection and Placement of the Endotracheal Tube 411
Key Points 411
OPERATIVE MANAGEMENT 412
Ventilator Mode 412
Vital Signs 413
Intraoperative Fluid Management and Electrolyte Management 413
Key Points 414
TROUBLESHOOTING 414
ADDITIONAL OPERATIVE CONSIDERATIONS 414
Temperature Regulation 414
Neonate Pain Perception 415
CONCLUSION 415
REFERENCES 415
REFERENCES 415.e1
38 - Neonatal Respiratory Care in Resource-Limited Countries 416
SCOPE OF THE NEED 416
LIMITING FACTORS 416
Respiratory Care Program Barrier 417
Infrastructure 417
Skilled Health Care Personnel 417
Support Equipment 417
CURRENT STATUS 417
China 417
India 418
Other Countries 418
ESTABLISHING RESPIRATORY CARE PROGRAMS 419
Leadership and Partnership 419
Implementation 419
Infrastructure 420
Resources 420
Equipment for Respiratory Care Programs 421
Ventilators 421
Clinical Care Pathways 421
Clinical Monitoring 422
Education 422
Evaluation 422
PROJECTED GROWTH IN NEONATAL VENTILATION—A GLOBAL PERSPECTIVE 422
OUTCOMES OF NEONATAL VENTILATION 423
ETHICAL DILEMMAS 423
CONCLUSIONS 423
REFERENCES 424
REFERENCES 424.e1
39 - Transport of the Ventilated Infant 425
IMPORTANT ROLE OF THE TRANSPORT TEAM 425
REGIONALIZED CARE 425
TRANSPORT TEAM COMPOSITION 426
TRANSPORT EDUCATION 427
TRANSPORT PHYSIOLOGY 427
Hypoxia 427
Air Expansion 427
Noise and Vibration 427
Thermoregulation 428
STABILIZATION 428
CLINICAL ISSUES 428
EQUIPMENT 429
Transport Ventilators 430
High-Frequency Ventilation 431
Continuous Positive Airway Pressure 432
Surfactant Administration 432
Inhaled Nitric Oxide 432
Extracorporeal Membrane Oxygenation 433
Hypothermia for Hypoxic Ischemic Encephalopathy 433
FUTURE DIRECTIONS 433
REFERENCES 433
REFERENCES 433.e1
40 - Extracorporeal Membrane Oxygenation 434
HISTORY OF CARDIOPULMONARY BYPASS 434
Development of Membrane Oxygenators 434
Development of a Pump 435
Vascular Access 435
PHYSIOLOGY OF EXTRACORPOREAL CIRCULATION 435
Membrane Lung 435
Oxygen and Carbon Dioxide Transfer 435
PATIENT SELECTION 437
Disease States 437
Selection Criteria 437
Alveolar–Arterial Oxygen Gradient 437
Oxygenation Index 438
Acute Deterioration 438
Barotrauma 439
Contraindications 439
Evaluation before Extracorporeal Membrane Oxygenation 439
TECHNIQUE FOR BEGINNING ECMO 439
Before Cannulation 439
Venoarterial versus Venovenous Cannulation 440
Operative Procedure 440
DAILY MANAGEMENT 441
WEANING 443
Carotid Artery Repair 443
OUTCOME 443
REFERENCES 445
REFERENCES 445.e1
41 - Discharge and Transition to Home Care 446
FACTORS TO CONSIDER WHEN DETERMINING READINESS FOR DISCHARGE 446
DISCHARGE TEAM 447
PREDISCHARGE NEEDS ASSESSMENT 447
HOME ENVIRONMENT 447
EQUIPMENT AND SUPPLIES 447
PERSONNEL RESOURCES 447
HOME NURSING 448
EMERGENCY PLANNING 448
POSTDISCHARGE FOLLOW-UP 448
TRACHEOSTOMY CARE 448
CHANGING TRACHEOSTOMY TUBES 448
OUTPATIENT MANAGEMENT OF SUPPLEMENTAL OXYGEN THERAPY 449
INDICATIONS FOR HOME OXYGEN THERAPY 449
Hypoxemia 449
Growth Failure 449
Intermittent Hypoxia and Pulmonary Hypertension 449
OXYGEN DELIVERY SYSTEMS FOR HOME OXYGEN THERAPY 449
OXYGEN CONCENTRATOR 449
LIQUID OXYGEN 449
HIGH-PRESSURE SYSTEMS 449
Strategies for Discontinuation of Home Oxygen Therapy 450
REFERENCES 450
REFERENCES 450.e1
42 - Neurologic Effects of Respiratory Support 451
CEREBRAL BLOOD FLOW IN THE NEONATE 451
Cerebral Autoregulation and Pressure-Passive Circulation 451
BRAIN INJURY IN THE PRETERM INFANT 451
Periventricular–Intraventricular Hemorrhage 452
Periventricular Hemorrhagic Infarction (Grade 4 Intraventricular Hemorrhage) 453
Periventricular Leukomalacia and Diffuse White Matter Injury 453
INFLUENCE OF OXYGEN CONCENTRATION AND CARBON DIOXIDE ON CEREBRAL BLOOD FLOW 454
Oxygen and Hemoglobin 454
Carbon Dioxide 454
Hypocarbia and White Matter Injury 455
Hypercarbia and Intraventricular Hemorrhage 455
Oxygen and Brain Injury 455
MODE OF VENTILATION AND BRAIN INJURY 456
Continuous Positive Airway Pressure 456
Conventional Mechanical Ventilation 456
High-Frequency Oscillatory Ventilation 456
MEDICATIONS USED TO TREAT RESPIRATORY CONDITIONS 456
Surfactant 456
Methylxanthines 456
Inhaled Nitric Oxide 457
Postnatal Steroids 457
SUMMARY 457
REFERENCES 458
REFERENCES 458.e1
43 - Pulmonary and Neurodevelopmental Outcomes Following Ventilation 459
INTRODUCTION 459
BRONCHOPULMONARY DYSPLASIA 459
Definitions of Bronchopulmonary Dysplasia 459
PULMONARY OUTCOMES 460
Pulmonary Function Testing and Imaging 461
Respiratory Illnesses/Wheezing or Asthma 461
HEALTH CARE UTILIZATION 462
NEURODEVELOPMENTAL OUTCOMES AND BRONCHOPULMONARY DYSPLASIA 462
OUTCOMES AFTER NEONATAL HYPOXIC RESPIRATORY FAILURE 463
Inhaled Nitric Oxide 463
Extracorporeal Membrane Oxygenation 463
CONCLUSION 463
REFERENCES 464
REFERENCES 464.e1
APPENDICES 465
APPENDIX 1 466
APPENDIX 2 466
APPENDIX 3 466
APPENDIX 4 467
Normal Lung Function Data for Term Newborns during the Neonatal Period 467
APPENDIX 5 467
Allen’s Test 467
APPENDIX 6 467
Procedure for Obtaining Capillary Blood Gases 467
APPENDIX 7 467
Normal Umbilical Cord Blood Gas Values 467
APPENDIX 8 468
APPENDIX 9 469
Capillary Blood Gas Reference Values in Healthy Term Neonates 469
APPENDIX 10 469
Blood Gas Values in Cord Blood and in Arterial Blood at Various Ages during the Neonatal Period 469
Oxygen Tension 469
Carbon Dioxide Tension 469
pH 469
Base Excess 469
APPENDIX 11 470
Conversion Tables 470
Torr to Kilopascal 470
Kilopascal to Torr 470
APPENDIX 12 470
Hemoglobin–Oxygen Dissociation Curves 470
APPENDIX 13 471
Siggaard–Andersen Alignment Nomogram 471
APPENDIX 14 472
Systolic, Diastolic, and Mean Blood Pressure by Birth Weight and Gestational Age 472
APPENDIX 15 473
Systolic and Diastolic Blood Pressure in the First 5Days of Life 473
APPENDIX 16 474
Neonatal Resuscitation Record 474
APPENDIX 17 475
Effective FiO2 Conversion Tables for Infants on Nasal Cannula 475
APPENDIX 18 477
Neonatal Indications and Doses for Administration of Selected Cardiorespiratory Drugs 477
Cardiorespiratory Pharmacopeia for the Newborn Period 477
Administration Routes 477
ALVEOLAR–ARTERIAL OXYGEN GRADIENT 481
Respiratory Quotient and Barometric Pressure 481
Information About Alveolar–Arterial Oxygen Gradient and PaO2/FiO2 Ratio 481
COMPLETE ABG 482
For Metabolic Alkalosis 483
ETCO2 TUTOR 485
INDEX 487
A 487
B 488
C 488
D 490
E 490
F 491
G 491
H 491
I 492
J 493
K 493
L 493
M 493
N 494
O 495
P 495
Q 497
R 497
S 498
T 499
U 499
V 499
W 500
X 500
IBC ES2