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Cottrell and Patel’s Neuroanesthesia E-Book

Cottrell and Patel’s Neuroanesthesia E-Book

James E. Cottrell | Piyush Patel

(2016)

Additional Information

Book Details

Abstract

Featuring new co-editor Piyush Patel, MD, the updated edition of Cottrell and Patel's Neuroanesthesia continues to serve as the definitive reference on this important field of medicine. Clinically oriented chapters are clearly organized and cover key clinical points, case presentations, and discussions, delivering the complete and authoritative guidance you need to ensure optimal perioperative safety for neurosurgical patients.

  • Integrates current scientific principles with the newest clinical applications.
  • Explains what to do under any set of circumstances, the logic behind why it should be done, and how to avoid complications.
  • Clear conceptual illustrations make complex concepts easier to understand at a glance.
  • Comprehensive and broad coverage of all important aspects of neuroanesthesia enables you to find reliable answers to any clinical question.
  • Access brand-new information to keep you current! All chapters have been thoroughly updated to reflect the latest developments in neurosurgical anesthesia.
  • A completely reorganized TOC offers easier access to information.
  • Covers the latest advances in neuromodality monitoring — brain tissue oxygenation oximetry; microdialysis; and depth of anesthesia.
  • Includes a brand-new chapter on end-of-life care and the diagnosis and management of brain death, as well as a new chapter on minimally invasive techniques.
  • New information on Parkinson’s disease has been added to the chapter on Awake Craniotomy.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Inside Front Cover ES2
Cottrell and Patel’s Neuroanesthesia iii
Copyright iv
Dedication to William L. Young, MD (1954 – 2013) v
Acknowledgment vi
Contents vii
Foreword ix
Preface x
List of Contributors xi
Chapter 1: Brain Metabolism, the Pathophysiology of Brain Injury, and Potential Beneficial Agents and Techniques 1
Brain metabolism 1
Cellular processes that require energy 1
Neuroanatomy 2
Pathophysiology 3
Ischemia 3
Necrosis versus Apoptosis 5
Global versus Focal Ischemia 6
Genetic Influences on Neuronal Damage 6
Potential treatments for cerebral ischemia 7
Reperfusion Strategies 7
Hypothermia 9
Glucose 9
Pharmacologic Agents 9
Sodium Blockade 10
Calcium Blockade 10
Free Radical Scavenging 10
Agents that Reduce Excitotoxicity 10
Antiapoptotic Agents 11
Cytokines and Trophic Factors 11
Anesthetic Agents 11
Barbiturates 12
Etomidate 12
Propofol 12
Dexmedetomidine 12
Xenon 12
Nitrous Oxide 12
Benzodiazepines 12
Volatile Anesthetic Agents 12
Preconditioning 12
Anesthetic Agents in Young Children 13
Treatment 14
Seizure Induced damage 14
Epileptic Treatment 14
Traumatic brain injury 14
Summary 15
References 15
Chapter 2: Cerebral and Spinal Cord Blood Flow 19
Physiology of the cerebral circulation 19
Regional Cerebral Blood Flow Requirements 19
Regulation of Cerebral Blood Flow 19
Cellular Mechanisms of Cerebral Vasomotion 20
Nitric Oxide 20
Vasoactive Peptides 21
Potassium Channels 21
Prostaglandins 22
Endothelin 22
Anatomic Considerations 22
Hemodynamic Factors 23
Pressure Regulation 23
Venous Physiology 24
Pulsatile Perfusion 25
Cardiac Output 25
Rheologic Factors 26
Metabolic and Chemical Influences 26
Carbon Dioxide 26
Oxygen 27
Temperature 27
Pharmacology 28
Neurogenic Influences 29
Autonomic Nervous System 29
Local Neural-glial Regulation of Cerebral Blood Flow 30
Autoregulatory failure 30
Hypoperfusion and Ischemia 30
Hyperperfusion and Circulatory Breakthrough 32
Reperfusion Injury 32
Hemodynamic Considerations during Autoregulatory Failure 32
Cerebrovascular Reserve 32
Cerebral Steal 33
Vessel Length and Viscosity 33
Collateral Failure 33
Therapy for enhancing perfusion 33
Induced Hypertension 33
Rationale 33
Applications 33
Inverse Steal 34
Hypocapnia 34
Pharmacologic Manipulation 34
Intra-Arterial Drug Delivery 34
Measurement of cerebral blood flow 35
Positron Emission Tomography 35
Single-Photon Emission Computed Tomography 35
Magnetic Resonance Imaging 39
Thermal Clearance 40
Doppler Techniques 40
Transcranial Doppler Ultrasonography 40
Other Ultrasound Methods 41
Optical Assessment of Cerebral Blood Flow 42
Optical Methods for Preclinical Research 42
Intra-Vital Microscopy 42
Laser Doppler Blood Flow 42
Laser Doppler Perfusion Imaging 42
Speckled Laser Doppler Flow Mapping 42
Infrared Thermal Imaging 42
Photo-Acoustic Tomography and Functional Brain Imaging 42
Two-Photon Microscopy 43
Optical Coherence Tomography 43
Optical Methods for Clinical Assessment of Cerebral Blood Flow 43
Jugular Venous Oximetery 43
Near-Infrared Spectroscopy 43
Physical Basis 43
Methods Used for Near-Infrared Spectroscopy 44
Continuous Wave Spectroscopy 44
Time Domain Imaging 44
Frequency Domain Spectroscopy 44
Advantages and Disadvantages of Near-Infrared Spectroscopy Monitoring 44
Perioperative Applications of Near-Infrared Spectroscopy 45
Carotid Endartertomy 45
Cardiopulmonary Bypass 45
Critical Care Applications of Near-Infrared Spectroscopy 45
Neonatal Neurological Injury Monitoring 45
Synthesis and Comment 46
Spinal cord blood flow 47
Spinal Cord Blood Flow Anatomy 47
Clinical Significance 47
Measurement Techniques 47
Comparison of Cerebral Blood Flow and Spinal Cord Blood Flow 48
Blood Pressure 48
Carbon Dioxide and Oxygen Tension 48
Temperature 48
Neurogenic Control 48
Anesthetics 48
Effect of Cord Compression on Spinal Cord Blood Flow 48
Summary 48
Acknowledgments 49
References 49
Chapter 3: Cerebrospinal Fluid 59
Anatomy of cerebrospinal fluid spaces and properties of cerebrospinal fluid 59
Macroscopic Spaces 59
Extracellular Fluid Spaces 59
Composition of cerebrospinal fluid 59
Cerebrospinal fluid formation 60
Cerebrospinal Fluid Formation at the Choroid Plexus 60
Extrachoroidal Cerebrospinal Fluid Formation 60
Movement of Glucose 60
Movement of Protein 60
Effects of Increased Intracranial Pressure on Cerebrospinal Fluid Formation 61
Circulation of cerebrospinal fluid 61
Reabsorption of cerebrospinal fluid 62
Chapter 4: Effects of Anesthetic Agents and Other Drugs on Cerebral Blood Flow, Metabolism, and Intracranial Pressure 74
Introduction 74
Physiologic and pharmacologic considerations in relation to neurosurgical anesthesia 74
Blood Flow and Metabolism Changes in Relation to Functional Changes 74
Blood Flow Changes in Relation to Cerebral Perfusion Pressure and CO 2 75
Changes in Cerebral Blood Flow and Intracranial Pressure Regulation in Pathologic Conditions 75
Effects of specific anesthetic drugs and other drugs 75
Inhalational Anesthetics 75
Nitrous Oxide 75
Xenon 77
Halothane 77
Isoflurane 77
Sevoflurane 78
Desflurane 79
Intravenous Anesthetics 79
Barbiturates 79
Etomidate 80
Propofol 80
Ketamine 81
Benzodiazepines 81
Synthetic Opioids 82
Fentanyl and Sufentanil 82
Alfentanil and Remifentanil 82
Muscle Relaxants 83
Succinylcholine 83
Nondepolarizing Muscle Relaxants 83
Other Drugs 83
Lidocaine 83
Alpha 2 -Adrenergic Agonists 83
Anesthetic interactions 84
Autoregulation During Anesthesia 84
Cerebrovascular Reactivity to CO 2 84
Surgical Stimulation 85
Interactions with Time 85
Summary 85
References 86
Chapter 5: Modern Neuroradiology Relevant to Anesthetic and Perioperative Management 91
Introduction 91
Imaging modalities 91
Structural Imaging Modalities 91
Plain Radiographs 91
Computed Tomography 91
Magnetic Resonance Imaging 91
Conventional Cerebral Angiography 92
Magnetic Resonance Angiography and Computed Tomography Angiography 92
Myelography and Computed Tomography Myelography 92
Functional Imaging Modalities 93
Perfusion Computed Tomography 93
Diffusion-weighted Magnetic Resonance Imaging and Diffusion Tensor Imaging 94
Perfusion-weighted Magnetic Resonance Imaging 95
Magnetic Resonance Spectroscopy 95
Intraoperative Magnetic Resonance Imaging 96
Intracranial disorders 99
Imaging Patterns of Intracranial Disorders 99
Edema 99
Hemorrhage 99
Mass Effect, Shift and Herniation 100
Hydrocephalus 100
Review of Main Surgical Intracranial Disorders 101
Traumatic Brain Injury 101
Indications for Imaging in Traumatic Brain Injury Patients 101
Types of Traumatic Brain Injury 101
Brain Neoplasms 103
Image Detection of Tumor Margins 103
Grading of Brain Tumors Based on Imaging 104
Imaging of Brain Tumor Treatment Effects 104
Eloquent Cortex 104
Intracranial Aneurysms and Other Intracranial Vascular Malformations 104
Intracranial Aneurysms 104
Arteriovenous Malformations 105
Ischemic Strokes 108
Computed Tomography and Acute Stroke 108
Magnetic Resonance Imaging and Acute Stroke 108
References 110
Chapter 6: Evoked Potentials 114
Basics of evoked potentials 114
Somatosensory evoked potentials 114
Mapping Using Somatosensory Evoked Potentials 115
Cortical Monitoring Using Somatosensory Evoked Potentials 115
Somatosensory Evoked Potential Monitoring in Spinal Surgery 116
Recording Somatosensory Evoked Potentials from the Spinal Column 116
Auditory brainstem responses 116
Visual evoked potentials 117
Basic electromyographic monitoring 117
Cranial Nerve Monitoring 118
Facial Nerve 118
Other Cranial Nerves 118
Monitoring of the Peripheral Nervous System 119
Monitoring of Reflex Responses 119
Motor evoked potentials 120
Anesthetic considerations during monitoring 122
Conclusion 123
References 124
Chapter 7: Transcranial Doppler Ultrasonography in Anesthesia and Neurosurgery 127
Principles of transcranial Doppler ultrasonography 127
Measurements using transcranial Doppler ultrasonography 127
The Examination 127
Velocity Measurements 128
Waveform Pulsatility 129
Describing cerebral haemodynamics: testing and monitoring 129
Cerebrovascular Reactivity to CO 2 129
Cerebral Pressure Autoregulation 130
Leg-Cuff Test 130
Static Autoregulation 131
Transient Hyperemic Response Test 131
Continuous Monitoring of Cerebral Autoregulation 132
Phase Shift between the Superimposed Respiratory and Arterial Blood Pressure Waves 132
Autoregulation Index-Transfer Function Analysis 132
Time Correlation Method 132
Noninvasive Assessment of Cerebral Perfusion Pressure and Intracranial Pressure 133
Critical Closing Pressure 134
Transcranial Doppler Ultrasonography in Multimodality Monitoring 134
“New Generation” of Model-Based Transcranial Doppler Parameters 135
Transcranial Doppler ultrasonography in clinical practice 135
Carotid Artery Disease 135
Intracranial Vascular Disease 136
Subarachnoid Hemorrhage 136
Arteriovenous Malformations 137
Closed-Head Injury 137
Stroke 138
Miscellaneous Non-neurosurgical Applications 138
Cardiac Surgery 138
Orthoptic Liver Transplantation 138
Pregnancy and Eclampsia 138
Summary 138
References 139
Chapter 8: Multi-modality Neurologic Monitoring 142
Introduction 142
Clinical assessment 142
Intracranial and cerebral perfusion pressures 143
Intracranial Pressure 143
Technical Aspects 144
Indications 144
Thresholds for Treatment and Evidence 144
Cerebral Perfusion Pressure 145
Chapter 9: Fluid Management During Craniotomy 152
Osmolality, oncotic pressure, and intravascular volume 152
Osmolality 152
Oncotic Pressure 153
Determinants of Fluid Movement between Vasculature and Tissues 153
Fluid Movement between Capillaries and the Brain 154
Solutions for intravenous use 155
Hyperosmolar Solutions 156
Dextrose Solutions and Hyperglycemia 157
Fluid administration during craniotomy 159
Preoperative Deficits 159
Intraoperative Fluids 159
Crystalloids 159
Mannitol 160
Colloids 160
Hetastarch 160
Dextrans 161
Albumin 161
Plasma and Red Blood Cells 161
Summary 162
Acknowledgment 162
References 162
Chapter 10: Care of the Acutely Unstable Patient 166
Brain injury 166
Initial Evaluation 166
Detailed Neurologic Evaluation 166
Neuroimaging 167
Evaluation of Other Organ Systems 168
Respiratory System 168
Cardiovascular System 168
Musculoskeletal System 169
Gastrointestinal System 169
Coagulation 169
Electrolyte Imbalance 169
Management of the Brain-Injured Patient 170
Airway 170
Goals in the Acute Care of the Brain-Injured Patient 171
Prevention of Hypoxemia 172
Maintenance of Hemodynamic Stability 172
Hypotension 172
Hypertension 173
Fluid Management (see Chapter 9) 173
Blood Glucose Control 174
Temperature Control 174
Monitoring and Treatment of Intracranial Hypertension 175
Head Position 175
Hyperventilation 175
Hyperosmolar Therapy 175
Diuretics 176
Barbiturates and Other Sedatives and Analgesics 176
Surgical Treatment 176
Spinal cord injury 177
Neurologic Evaluation 177
Evaluation of the Extent of Spinal Cord Injury 177
Spine Immobilization 177
Radiologic Evaluation 178
Evaluation of Other Organ Systems 179
Respiratory System 179
Cardiovascular System 181
Temperature Control 181
Associated Injuries 181
Airway Management of the Patient with Suspected Cervical Spine Injury 181
Effects of Various Airway Maneuvers on Cervical Spine Mobility 181
Basic Airway Maneuvers 181
Techniques for Urgent Airway Control 182
Direct Laryngoscopy 182
Cricothyroidotomy 182
Transtracheal Jet Ventilation 182
Techniques for Elective Airway Control 182
Awake Intubation (Blind Nasal, Light Wand, or Fiberoptic Laryngoscopy) 182
Retrograde Tracheal Intubation 183
Management of Endotracheal Intubation 183
Goals in the Acute Care of the Spinal Cord-Injured Patient 184
Summary 184
References 184
Chapter 11: Supratentorial Masses: Anesthetic Considerations 189
Epidemiology 189
General Considerations 189
Pathophysiology of Rising Intracranial Pressure 189
Volume Effects of Intracranial Tumors 190
The Blood–Brain Barrier and Edema 190
Intracerebral Perfusion and Cerebral Blood Flow 190
Anesthesia and Intracerebral Pressure, Perfusion, and Metabolism 191
Intravenous Anesthetics 191
Volatile Anesthetics 191
Nitrous Oxide 192
Opioids 192
Other Drugs 192
Reducing Intracranial Pressure, Brain Bulk, and Tension 192
Intravenous Anesthetics 192
Hyperventilation 192
Diuretics and Osmotic agents 193
Cerebrospinal Fluid Drainage 193
Other Factors 193
Vasoconstrictive Cascade 193
General Anesthetic Management 193
Preoperative Assessment 193
Neurologic State of Patient 193
General State of Patient 194
Planned Operative Intervention 194
Determination of Anesthetic Strategy 195
Preoperative Preparation 195
Premedication 195
Vascular Access 195
Monitoring 196
Induction of Anesthesia 197
Goals and Drugs 197
Muscle Relaxants 197
Patient Positioning 197
Maintenance of Anesthesia 198
Goals 198
Choice of Technique 198
Management of Increases in Intracranial Pressure and Brain Bulk 199
Intraoperative ventilation 199
Fluid Therapy 199
Emergence from Anesthesia 199
Aims of Emergence After Neurosurgery 200
Early versus Late Emergence 200
Indications for Late Emergence 200
Preconditions for Early Emergence 200
Conduct of Early Emergence 201
Differential Diagnosis of Unplanned Delayed Emergence 201
Postoperative Care After Uncomplicated Surgery 202
Pain and Postoperative Nausea and Vomiting 202
Corticosteroids 202
Prevention of Seizures 202
Thromboprophylaxis 202
Other treatments 202
Specific Anesthetic Management 202
Difficult Airway 202
Infectious Tumors (Abscess) 203
Craniofacial and Skull Base Surgery 203
Awake Craniotomy or Stereotactic Procedures 203
Anesthesia for intracranial hematomas 203
General Considerations 203
Anesthetic Management of Acute Intracranial Hematoma 203
Induction 203
Anesthesia Maintenance 204
Monitoring 204
Anesthetic Technique 204
Emergence from Anesthesia 204
Summary 204
References 205
Chapter 12: Anesthetic Management for Posterior Fossa Surgery 209
Preoperative evaluation and preparation 209
General monitoring issues 209
Choice of patient position 210
Sitting Position 210
Physiologic Changes that occur with the Sitting Position 210
Prone Position 210
Lateral, Three-Quarter Prone, and Park-Bench Positions 211
Risk–Benefit Analysis of Sitting Position Compared with Other Positions 211
Anesthetic considerations 211
Induction of Anesthesia 212
Maintenance of Anesthesia 213
Emergence from Anesthesia 213
Venous air embolism 213
Pathophysiology 214
Incidence 214
Risks of Air Embolism 215
Risks of Paradoxical Air Embolism 215
Use of Positive End-Expiratory Pressure 215
Monitoring for Venous Air Embolism 215
Doppler Ultrasound Transducer 215
Right Atrial Catheter 216
Pulmonary Artery Catheter 217
Capnography 217
Transesophageal Echocardiography 217
Complications Resulting from Venous Air Embolism 217
Intraoperative Complications 217
Postoperative Complications 217
Prevention of Air Embolism 218
Treatment of Venous Air Embolism 218
Intraoperative Period 218
Postoperative Period 218
Electrophysiologic Monitoring 218
Brainstem Auditory Evoked Potentials 219
Somatosensory Evoked Potentials 219
Electroencephalogram 219
Cranial Nerve Monitoring 219
Summary 219
References 219
Chapter 13: Anesthetic Management of Cerebral Aneurysm Surgery 222
Preoperative considerations 222
The Central Nervous System 222
Intracranial Pressure 223
Impairment of Autoregulation and Carbon Dioxide Reactivity 224
Systemic Effects 224
Intravascular Volume Status and Hyponatremia 224
Cardiac Effects 224
Electrocardiographic Changes 225
Myocardial Function 225
Anesthetic Implications 225
Respiratory System 225
Other Major Medical Problems 225
Concurrent Medical Treatments 225
Timing of Surgery 226
Rebleeding 226
Vasospasm 227
Incidence 227
Pathogenesis 227
Clinical Manifestations 227
Diagnosis 227
Treatment 227
Pharmacologic 227
Nonpharmacologic 228
Surgical 228
Reduction of Intracranial Pressure 228
Hypervolemic, Hypertensive, and Hemodilution Therapy 228
Transluminal Angioplasty 229
Anesthetic Considerations 229
Hypertensive Therapy 229
Calcium Channel Antagonists 229
Premedication 229
Intraoperative considerations and induction of anesthesia 229
Induction 230
Achieve Loss of Consciousness 230
Intubation 230
Prophylaxis against a Rise in Blood Pressure during Laryngoscopy 230
Choice of Muscle Relaxant 231
The Patient with a Full Stomach 231
The Patient with a Potentially Difficult Airway 231
After Intubation 231
Monitoring Requirements 231
Central Venous Pressure Catheter versus Pulmonary Artery Catheter 232
Site of Central Venous Catheter and Pulmonary Artery Catheter Placement 232
Other Monitoring 232
Positioning of the Patient 232
Maintenance of Anesthesia 233
Brain Relaxation 233
Fluid and Electrolyte Balance 234
Other Considerations 234
Controlled Hypotension versus Temporary Occlusion 234
Controlled Hypotension 235
Temporary Occlusion 235
Cardiac Standstill Using Adenosine (Transient Cardiac Pause) 236
Moderate Hypothermia and Neuroprotection 236
Electrophysiologic Monitoring 237
Intraoperative Aneurysm Rupture 238
Intraoperative Catheter Angiography and Indocyanine Green Videoangiography 239
Emergence and Recovery 239
Postoperative considerations 239
Giant aneurysms 239
Brain Protection in Circulatory Arrest 240
Barbiturates 240
Hypothermia 240
Cardiovascular Effects of Profound Hypothermia 241
Hematologic Effects of Profound Hypothermia 242
Hyperglycemia 242
Anesthetic Considerations 242
Summary 242
References 243
Chapter 14: Interventional Neuroradiology Anesthetic Management 248
Preoperative planning and patient preparation 248
Anesthetic Technique 249
Choice of Anesthetic Technique 249
Monitoring 249
General Anesthesia 250
Intravenous Sedation 250
Anticoagulation 251
Heparin 251
Direct Thrombin Inhibitors 251
Antiplatelet Agents 251
Reversal of Anticoagulation 251
Deliberate hypertension 251
Deliberate hypotension 252
Management of neurologic and procedural crises 252
Specific procedures 252
Intracranial Aneurysm Ablation 252
Angioplasty of Cerebral Vasospasm from Aneurysmal Subarachnoid Hemorrhage 254
Carotid Test Occlusion and Therapeutic Carotid Occlusion 254
Brain Arteriovenous Malformations 255
Dural Arteriovenous Fistulas 256
Vein of Galen Malformations 257
Craniofacial Venous Malformations 257
Angioplasty and Stenting for Atherosclerotic Lesions 257
Thrombolysis and Thrombectomy of Acute Thromboembolic Stroke 257
Postoperative management 259
Future directions 260
Acknowledgments 260
References 260
Chapter 15: Anesthetic Considerations for Surgical Resection of Brain Arteriovenous Malformations 263
Clinical behavior 263
Etiology and pathogenesis 264
Cerebral circulatory changes in patients with arteriovenous malformations 265
Perioperative anesthetic management 267
Preoperative Management 267
Intraoperative Management 267
Monitoring 267
Vascular Access 267
Anesthetic Technique 267
Choice of Agents 267
Nonpharmacologic Cerebral Protection 268
Brain Relaxation during Surgery 268
Fluid Management and Glucose Control 268
Controlled Systemic and Cerebral Hemodynamics 269
Blood Pressure Control 269
Induced Hypotension 269
Use of Hypothermia 269
Emergence from Anesthesia and Initial Recovery 270
Operative considerations for avoiding complications 270
References 273
Chapter 16: Occlusive Cerebrovascular Disease: Anesthetic Considerations 277
Physiologic considerations 277
Carbon Dioxide Tension 277
Blood Pressure 278
Preoperative considerations 278
Patient Selection 279
The Role for Carotid Angioplasty and Stenting 279
Major Randomized Trials Comparing Carotid Artery Stenting versus Carotid Endarterectomy 280
Preanesthesia Assessment 281
Anesthetic management 285
Intraoperative Monitoring 285
Choice of Anesthetic Technique 285
Regional Anesthesia 286
General Anesthesia 287
Carotid Angioplasty and Stenting Procedures 288
Cerebral Protection 288
Neurologic Monitoring 289
Emergence from Anesthesia 291
Postoperative Care 291
Complications 291
Stroke 292
Myocardial Infarction 292
Death 292
Hyperperfusion Syndrome 292
Other Complications 293
Summary 293
References 293
Chapter 17: Awake Craniotomy, Epilepsy, Minimally Invasive and Robotic Surgery 298
Awake craniotomy 298
Approach to the Awake Craniotomy 298
Positioning 298
Scalp Block 298
Anesthetic Options 299
Brain Mapping and Cognitive Testing 300
Adverse Events and Management 300
Epilepsy surgery 300
Pharmacology of Anesthetic Agents 301
Sedative-Hypnotic Agents 301
Opioids 301
Volatile Inhalational Agents and Nitrous Oxide 302
Muscle Relaxants 302
Anesthetic Management 302
Goals 302
Preoperative Evaluation 303
Neurologic History 303
Medication History 303
Patient Preparation 303
Diagnostic Surgical Procedures for Intractable Epilepsy 303
Resection of Epileptogenic Brain Regions under General Anesthesia 303
Cerebral Hemispherectomy 305
Vagal Nerve Stimulator Placement 305
Emergence from Anesthesia and Postoperative Management 305
Minimally invasive cranial neurosurgery 306
Background and Anesthetic Goals 306
Neuroendoscopy 306
Preoperative Issues 306
Intraoperative Concerns 307
Postoperative Concerns 308
Endoscopic Transsphenoidal Hypophysectomy 308
Endoscopic Strip Craniectomy 308
Preoperative Concerns 308
Intraoperative Concerns 309
Postoperative Concerns 309
Functional Neurosurgery and Deep Brain Stimulation 309
Minimally invasive spine surgery 309
Video-Assisted Thoracoscopic Surgery 310
Preoperative Concerns 310
Intraoperative Concerns 310
Chapter 18: Stereotactic Surgery, Deep Brain Stimulation, Brain Biopsy, and Gene Therapies 317
Chapter 19: Perioperative Management of Adult Patients with Severe Head Injury 326
Epidemiology of head injury 326
Head injury guidelines 326
Classification of head injury 326
Emergency therapy 328
Prehospital Management 328
Emergency Department Management 329
Emergency Therapy for Severe Traumatic Brain Injury 329
Anesthetic Management 332
Cerebral Protection 332
Critical care 333
Cerebral Monitoring 333
Refractory Intracranial Hypertension 333
Post-traumatic Seizure 333
Systemic Sequelae 334
Coagulopathy 334
Summary 334
References 335
Chapter 20: Pediatric Neuroanesthesia and Critical Care 337
Developmental considerations 337
Preoperative evaluation and preparation 338
Intraoperative management 339
Induction of Anesthesia 339
Airway Management 340
Positioning 340
Vascular Access 340
Maintenance of Anesthesia 341
Intraoperative Fluid and Electrolyte Management 341
Monitoring 342
Hemodynamic Monitoring 342
Neurophysiologic Monitoring 342
Detection of Seizure Foci 342
Awake Craniotomy 342
Monitoring Spinal Cord and Nerve Root Integrity 343
Somatosensory Evoked Potentials 343
Motor Evoked Potentials 343
Nerve Root Monitoring 343
Special issues 343
Neonatal Emergencies 343
Craniosynostosis 344
Hydrocephalus 344
Tumors 344
Epilepsy 345
Vascular Anomalies 345
Trauma 345
Spine Surgery 346
Neuroendoscopy 346
Neuroradiology 346
Postoperative care 346
General Considerations 346
Respiratory Support 346
Hemodynamic Support 347
Fluid Management 347
Sedation 347
Seizures 348
Intracranial Pressure 348
Summary 348
References 348
Chapter 21: Neurosurgical Diseases and Trauma of the Spine and Spinal Cord: Anesthetic Considerations 351
Anatomy 351
Vertebral Column 351
Spinal Cord 351
Spinal Cord Blood Supply 353
Physiology 354
Blood Flow 354
Radiologic considerations 355
Surgical disorders of the spine 356
Disorders of the Cervical Spine 356
Cervical Spondylosis 356
Cervical Spondylotic Myelopathy 356
Cervical Disk Herniation 357
Syringomyelia 357
Disorders of the Thoracic and Lumbar Spine 357
Herniated Disk 357
Lumbar Spondylosis 358
Lumbar Spinal Stenosis 358
Degenerative Spondylolisthesis 358
Infections of the Spine 359
Osteomyelitis 359
Epidural Abscess 360
Spinal Tumors 360
Scoliosis 361
Inflammatory Arthritides of the Spine 362
Rheumatoid Arthritis 362
Ankylosing Spondylitis 362
Osteoporosis 363
Trauma of the spine and spinal cord 363
Biomechanical Considerations in Spinal Injury 363
Hyperextension 364
Compression 364
Hyperflexion 364
Rotation 366
Shear 366
Avulsion 366
Combined 366
Neurologic Assessment 367
Radiologic Considerations 367
Plain Radiographs 369
Computed Tomography 369
Magnetic Resonance Imaging 370
Summary 370
Spinal Cord Injury 370
Epidemiology 370
Terminology 371
Complete versus incomplete Spinal Cord Injury 371
Anatomic and Physiologic Considerations 372
Pathophysiology of Spinal Cord Injury 372
Primary and Secondary Injury ( Fig. 21.29) 372
Spinal Cord-Protective Strategies 372
Pharmacologic Therapies 372
Corticosteroids 372
Emerging Therapies 374
Hypothermia 374
Hypertension 374
Conclusion 374
Surgical Therapies 374
Neurologic and Radiologic Evaluation 374
Initial Closed Reduction and Decompression 374
Determination of Spinal Stability 375
Early Surgical Therapy Following Spinal Injuries 376
Surgical Approaches in Spinal Injury 376
Medical Management 377
Pulmonary System 377
Cardiovascular System 379
Gastrointestinal System 380
Genitourinary System 380
Temperature Control 380
Coagulation 380
Hyperreflexic Syndromes 380
Autonomic Hyperreflexia 380
Infections 380
Pressure Ulcers 381
Chronic Pain Syndromes 381
Summary 381
Anesthetic considerations in spinal surgery 382
Preoperative Evaluation and Preparation 382
General 382
Airway Evaluation 382
Pulmonary Evaluation 383
Cardiac Evaluation 383
Neurologic Evaluation 383
Laboratory Studies 383
Pharmacology 383
Premedication 384
Airway Management for Cervical Spine Surgery 384
Emergency Airway Management in the Cervical Spine-Injured Patient 387
Anesthesia Induction and Maintenance 388
Induction 388
Maintenance 388
Anesthetic Management of Patients with Acute Spinal Cord Injury 388
Positioning 389
Head Position 390
Monitoring 390
Physiologic Monitoring 390
Fluid Management and Blood Transfusion 391
Antifibrinolytic Agents 391
Acute Normovolemic Hemodilution 391
Intraoperative Cell Salvage 391
Postoperative Care 392
Extubation 392
Postoperative Pain Control 392
Complications 392
Neurologic Deficit 392
Anterior Spinal Artery Syndrome 392
Postoperative Visual Loss 392
Epidural Hematoma 393
Venous Thromboembolism 393
Dural Tear 393
Summary 393
References 394
Chapter 22: Neurologic Disease and Anesthesia 399
Huntington’s disease 399
Amyotrophic lateral sclerosis 399
Parkinson’s disease 400
Alzheimer’s type dementia 402
Demyelinating diseases 404
Guillain–Barré, Multiple Sclerosis, and Nitrous Oxide Neuropathy 404
Guillain–Barré (Acute Idiopathic Polyneuritis) 404
Multiple Sclerosis 404
Nitrous Oxide Induced Myeloneuropathy 405
References 406
Chapter 23: Postoperative and Intensive Care Including Head Injury and Multisystem Sequelae 410
Respiratory complications 410
Alteration in Ventilatory Control 410
Anatomic Considerations 411
Pneumonia 411
Acute Lung Injury or Acute Respiratory Distress Syndrome 411
Chest Trauma 413
Neurogenic Pulmonary Edema 413
Pathophysiology 413
Diagnosis and Management 413
Deep Vein Thrombosis and Pulmonary Embolism 413
Cardiovascular complications 413
Conduction Abnormalities 414
Hypertension 414
Hypotension 414
Fat Embolism Syndrome 414
Hematologic complications 415
Anemia 415
Disseminated Intravascular Coagulation 415
Neuromuscular complications 415
Electrolyte imbalances 416
Hyponatremia 416
Hypernatremia 416
Hypomagnesemia, Hypokalemia, and Hypocalcaemia 416
Gastrointestinal abnormalities and nutrition 416
Stress Ulcer 416
Nutrition 416
Endocrine abnormalities 417
Hyperglycemia and Hypoglycemia 417
Syndrome of Inappropriate Antidiuretic Hormone Secretion 417
Hypopituitarism 417
Infectious complications 418
Secondary brain injury 418
Sedation and Analgesia 418
Normothermia 419
Control of Intracranial Pressure 419
Brain Physiologic Monitoring 420
References 420
Chapter 24: Chronic Pain Management 424
Introduction 424
Acute Pain Management Assessment 425
Systemic medications for acute pain management 425
Etomidate 425
Ketamine 425
Opioids 425
Propofol 425
Alpha2-Adrenergic Agonists 425
Nonsteroidal Anti-Inflammatory Drugs 426
Neuropathic Pain Agents 426
Regional analgesic options 426
Neuroaxial Epidural Infusion Therapy 426
Peripheral Nerve Blockade 426
Complications of neuroanesthesia pain management 426
Mental Status Changes 426
Elevation of Arterial Carbon Dioxide 426
Reduction of Arterial Oxygen 426
Hypotension 426
Cerebrospinal Fluid Leak 426
Nerve Injury 427
Infection 427
Creating a case-specific pain management plan 427
Intracranial Surgery 427
Extremity Surgery 427
Neuraxial Surgery 427
Chronic pain management 427
Definition and taxonomy of pain 427
Evolution of the algorithm 428
Ablative vs. augmentative therapies 429
Selected interventions 429
Intrathecal Therapy 429
Spinal Cord Stimulation 429
Tonic Spinal Cord Stimulation 429
High-Frequency Stimulation 10,000 Hz 430
Burst Stimulation 430
Dorsal Root Ganglion Spinal Stimulation 430
Peripheral Nerve Stimulation 430
Future directions 431
References 431
Chapter 25: Anesthesia for Neurosurgery in the Pregnant Patient 433
Introduction 433
Maternal physiologic changes during pregnancy 433
Nervous System 433
Inhalation Anesthetic Requirements 433
Local Anesthetic Requirements 433
Respiratory System 433
Upper Airway Mucosal Edema 433
Functional Residual Capacity 433
Ventilation 434
Cardiovascular System 434
Blood Volume 434
Cardiac Output 434
Aortocaval Compression 434
Gastrointestinal System 434
Gastric Acid Production 434
Gastric Emptying 434
Gastroesophageal Sphincter 434
Pregnancy and Aspiration Pneumonia 434
Renal and Hepatic Systems 434
Epidural Vascular Changes 434
Epidural Venous Pressure 434
Epidural Arterial Vessels 435
Effects of anesthetic interventions on uterine blood flow 435
Uteroplacental drug transfer and teratogenesis 435
Determinants of Passive Diffusion 435
Specific Drugs 435
Anesthesia during Pregnancy and the Risk of Birth Defects 436
Principles of Teratology 436
Evaluation of Teratogenic Potential 436
Specific Anesthetic Drugs 436
Intracranial disease 436
Subarachnoid Hemorrhage: Aneurysm and Arteriovenous Malformation 436
Neoplastic Lesions 437
Management of anesthesia for craniotomy during pregnancy 437
Timing of Surgery in Relation to Delivery 437
General Concerns 437
Aneurysm Clipping 437
Arteriovenous Malformation Resection 437
Neoplasm Resection 438
Anesthetic Management 438
Adjuvants to Surgery 438
Emergence from Anesthesia 439
Neuraxial anesthesia in parturients with intracranial pathology 439
Spontaneous spinal epidural hematoma 439
Anesthetic Management of Surgical Evacuation 440
Interventional neuroradiology in pregnancy 440
References 442
Chapter 26: Ethical Considerations in the Care of Patients with Neurosurgical Disease 444
An introduction to the history and theory of medical ethics 444
Origins of Contemporary Medical Ethics 444
Prevailing Theories and Principles 445
Issues of clinical decision making 445
The Provider–Patient Relationship 445
Self-Determination 445
Confidentiality 446
The Informed Consent Process 446
Competence 447
Information 447
Understanding 448
Consent 448
Authorization 448
Decision Making for Incapacitated Patients 448
The Importance of Prior Discussions 448
Advance Directives and Proxy Appointments 449
Surrogate Decision Making: Who Decides and on What Basis? 449
Treatment Decisions Requiring Special Attention 450
“Do Not Resuscitate” Orders 450
The “Never\" Competent 451
Critical Care and End-of-Life Decision Making: Special Concerns 451
Artificial Nutrition and Hydration 453
Dilemmas in Team Decision Making: The Role of the Anesthesiologist 453
Ethical Issues in Innovative Neurosurgery: Role of the Anesthesiologist 453
Ethics Related to Brain Death 455
Summary 456
Acknowledgment 456
References 456
Chapter 27: The Pituitary Gland and Associated Pathologic States 458
The anatomy and physiology of the pituitary gland 458
Neurodevelopment 458
The Anatomy of the Adult Pituitary Gland 458
Radiologic Examination 460
Diseases of the sellar and parasellar regions 460
Pituitary Tumors 460
Nonfunctional Pituitary Tumors 460
Hypersecretory Pituitary Adenomas 461
Cushing’s Disease 461
Acromegaly 461
Prolactinomas 461
Thyrotropin Secreting Hormone Adenomas 461
Other Conditions Associated with Pituitary Tumors 461
Pituitary Apoplexy 461
Stalk Effect 462
Other Sellar and Parasellar Lesions 462
Craniopharyngiomas 462
Rathke’s Cleft Cysts 462
Anesthetic management of surgery for pituitary tumors 462
Anesthetic Considerations for Pituitary Surgery 462
Preoperative Evaluation 462
Intraoperative Considerations 462
Surgical Approach 462
Anesthetic Considerations for Specific Disease States 463
Cushing’s Disease 463
Prolactinomas 464
Thyrotropin Secreting Hormone Adenomas 464
Postoperative Management 465
Abnormalities of Salt and Water Homeostasis 465
Diabetes Insipidus 465
Summary 465
References 466
Chapter 28: Information Management and Technology 468
Introduction 468
Scope of health information technology 468
Clinical decision support 468
Managerial functions 470
Compliance Tracking 470
Quality Management 470
Ongoing Professional Performance Evaluation 470
Return on investment 470
Clinical and operations research 470
Challenges and future developments 470
Understanding informatics hardware 471
Data security and confidentiality 471
Professionalism 471
Informatics resources as educational and research tools 471
Electronic Textbooks 471
Scientific Journals/Medical Literature 472
Guideline Repositories 472
Social Media 472
Conclusion 472
References 472
Chapter 29: Future Advances in Neuroanesthesia 475
Genomics 475
Specific Anesthetic Effects of Genetic Factors 475
Blood Flow and Metabolism 475
MAC, Analgesia, and Other Anesthetic Side Effects 476
Pharmacokinetics 476
Ischemic Tolerance 476
Risk of Comorbidities 477
Application of Therapies to a Specific Genomic Signature 477
Stem cells 477
Neuroprotection 478
Hypothermia 478
Definition of Subsets Suitable for Hypothermia 478
New Methods to Induce Hypothermia 478
Ice Crystals 478
Heat Exchange Techniques 478
Hibernation 478
Infrared Light Lasers 478
Spinal Cord Injury Neuroprotection 479
Acute Protection 479
Stem Cell Therapy 479
Genomic Therapy 479
Neurotrophin Therapy 153 479
Activity-based Restorative Therapy 479
Multimodality Approach to Neuroprotection 479
Intracranial pressure management 480
Technology 480
Monitoring 480
Near-Infrared Spectroscopy-based Techniques 480
Diffuse Correlation Spectroscopy and Diffuse Reflectance Spectroscopy 480
Diffuse Correlation Spectroscopy 480
Diffuse Reflectance Spectroscopy 481
Near-Infrared Spectorscopy-based Indocyanine Green, Blood Flow Index and Cerebral Blood Flow 481
Other Near-Infrared Spectroscopy Cerebral Blood Flow Methods 481
Reliable Measurement of Depth of Hypnosis and Analgesia and Potential for Automated Closed Loop Anesthetic Administration 482
Continuous Blood Levels of Intravenous Anesthetics 482
Multimodality Brain Monitoring 482
Exhaled Gas Monitoring 482
Feedback Loops 482
Anesthesia Robot 482
Magnetic Resonance in the Operating Room 483
Pharmacology 483
Fast on Fast off 483
Non-neurotoxic Anesthetics 483
Summary 483
References 483
Index 490
Inside Back Cover ES3