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385
Index
Page numbers followed by ‘‘t’’ denote tables; those followed by ‘‘b’’ denote boxes;
and those followed by ‘‘f’’ denote figures
Abducens nerve
anatomy of, 61
course of, 100
palsy of, 77, 113
paralysis of, 100
Abscess
brain, 141–142, 142f, 143t
cerebellar, 149–150, 150t
epidural, 126–127, 144
pontine, 170f
Abulia, 8
Accidental hypothermia, 259–260
Acetaminophen overdose, 245, 326
Acetic acid, 250
Acetylcholine, 208–209
Acid-base imbalances
acidosis. See Acidosis
alkalosis. See Alkalosis
hyperventilation and, 188–191
systemic, 258–259
treatment of, 315
Acidosis
lactic, 233, 250
metabolic. See Metabolic acidosis
respiratory, 192, 192t
sodium bicarbonate for, 324, 326
Acute bacterial leptomeningitis, 262–265
Acute bacterial meningitis, 132–133, 133t, 263, 316f
Acute cerebellar infarction, 139b
Acute disseminated encephalomyelitis
description of, 157–158, 267f, 271–273
outcomes, 356, 367
Acute hemorrhagic leukoencephalopathy, 272
Acute hypoxia, 211–214
Acute liver failure, 224
Acute massive cerebral infarction, 138b
Acute subdural hematoma, 123
Acute toxic encephalopathy, 266, 269–271
Addison’s disease, 235–236
Adenosine triphosphate, 198
Adrenal disorders, 234–236
Adrenoleukodystrophy, 278
Advance care planning, 376
Agitation, 6, 317
Airway
description of, 42–43
obstruction of, 211, 311
Akinetic mutism, 8, 360–362, 361b, 375
Alcohol
delirium tremens after withdrawal from, 283
intoxication caused by. See Ethanol intoxication
Alcoholic stupor, 242t, 243
Alcoholism, 246t
Alkalosis
metabolic, 191t, 191–192, 231, 258
respiratory, 189–191, 190t, 258
Alpha-ketoglutaramate, 225
Altered state of consciousness
acutely, 6–7, 8t
from basilar migraine, 168
chronic, 7–9, 8t
descriptive terms for, 8t
lateral displacement of the diencephalon and, 100
structural lesions associated with, 29–34
subacute, 7–9
Amphetamine, 242t
Amyloid angiopathy, 139–140, 146
‘‘Amytal interview,’’ 298, 307–308, 327
Anemia, 325
Anemic hypoxia, 211
Anesthesia
barbiturate, 205–206, 323
description of, 205–206
malignant hyperthermia associated with, 262
profound, brain death diagnosis in, 338
Aneurysms
bleeding by, 129
mycotic, 140
saccular, 129
vertebrobasilar, 145, 145t
Angiogenesis, 94–95
Angiography
computed tomography, 78
magnetic resonance, 79, 336
Anion gap, 240
Anoxemia, 201
Anoxia, 204, 212
Anoxic-ischemic brain damage
description of, 206
focal ischemia, 207–208
global ischemia, 206–207
hypoxia, 208
Antidepressants, 241, 245–246
Antidotes
administration of, 315–317
types of, 317t
Antifreeze. See Ethylene glycol
Anton’s syndrome, 154
Apathetic thyrotoxicosis, 237
Apnea. See also Sleep apnea
in brain death, 334–335, 335t
posthyperventilation, 49, 50f
Apneusis, 50f
Apneustic breathing, 51–52
387
Aquaporin-4, 215
Arachnoid villi, 92
Arousability, 40
Arousal
abnormalities of, 183–184
deficits in, 111
definition of, 183
Arousal system
compressive lesions effect on, 90–95
structural processes that impair, 9
Arteriovenous malformations, 140
Ascending arousal system
behavioral state switching, 22, 24–25
description of, 11–22, 19f
distortion of, 101
interconnectivity of, 22
pathways of, 39
Aseptic meningitis, 134t
Aspergillus meningitis, 133
Asterixis, 195–197
Astrocytes
description of, 198
glutamate-induced glycolysis in, 199f
hepatic encephalopathy pathology in, 224
Astrocytomas, 141
Asystole, 213
Ataxia, 113
Ataxic breathing, 50f, 52
Atropine-scopolamine, 242t
Attention, 185
Autonomic neuropathy, 234
Axonal shearing, 161
Bacterial encephalitis, 262–263
Bacterial leptomeningitis, acute, 262–265
Bacterial meningitis
acute, 132–133, 133t, 263
chronic, 133, 265–266
treatment of
algorithm for, 316f
corticosteroids, 322
regimen for, 325
Barbiturates
anesthesia using, 205–206, 323
delirium caused by, 242t
Baroreceptor reflex arc, 46
Basal forebrain, 13b–14b
Basal ganglionic hemorrhages, 137
Basilar artery
description of, 96, 99f
posterior cerebral arteries from, 153
Basilar artery occlusion
description of, 163
distal, 152–154
prodromal symptoms in, 214t
signs and symptoms of, 164t
Basilar migraine, 168
Battle’s sign, 40, 121
Behavioral state switching, 22, 24–25
Behc¸et’s disease, 115, 276
Benzodiazepines
‘‘Amytal interview’’ using, 307
description of, 242t, 245
overdose of, 316
Berger, Hans, 12
Bickerstaff’s brainstem encephalitis, 170
Blepharospasm, 64
Blood pressure, 45, 216
Blood tests, 77
Blood-brain barrier, 202
Bobbing, ocular, 69t, 71–72, 162
Brain
cardiovascular control pathways in, 47f
cerebral perfusion pressure, 43
oxygen deprivation effects, 46
regionally selective injuries that affect, 374–376
temperature fluctuations in, 259
traumatic injury to. See Traumatic brain injury
venous sinus thrombosis of, 154, 156
Brain abscess, 141–142, 142f, 143t
Brain death
apnea, 334–335, 335t
brainstem function findings, 333–335
cerebral scintigraphy evaluations, 336
characteristics of, 8–9
criteria for, 331–333, 332t
decision making regarding, 378
definition of, 8
determination of, 331–333
electroencephalography evaluations,
337–339, 338t
etiology of, 332–333, 333t
evoked potential measurements, 337–338
laboratory tests, 335–338
magnetic resonance angiography evaluations, 336
medical extension of life, 331–332
motor activity, 334
motor responses, 332, 339
neurologic examination, 332
ocular movements in, 334
organ donation considerations, 331
organ survival, 338–339
pitfalls in diagnosis of, 338–339
in profound anesthesia, 338
pupillary findings, 333–334
reflex activity, 334
sensory activity, 334
signs of, 333–335
transcranial Doppler ultrasonography
evaluations, 336
vestibulo-ocular responses, 339
Brainstem
compression of, 91, 145, 150
lesions of, 30f, 115–116
rostrocaudal deterioration of, 102
trauma to, 116
upper, injury to, 33–34
upward herniation, 102–103
vascular destruction disorders of
basilar artery occlusion, 163–166
basilar migraine, 168
brainstem hemorrhage, 166–168
description of, 163
posterior reversible leukoencephalopathy
syndrome, 168–169, 169t
Brainstem auditory-evoked responses, 354
Brainstem gliomas, 51
Brainstem hemorrhage, 166–168
Brainstem infarction, 165t
Brainstem tumors, 170
388
Index
Breathing
abnormalities of, 46t, 46–47
apneustic, 51–52
ataxic, 50f, 52
cluster, 50f
Kussmaul, 75–76
physiology of, 47–48
rhythmic, 49
Bremer, Frederic, 12
Brudzinski’s sign, 40, 263
Burst neurons, 13b
Calcium abnormalities
hypercalcemia, 256–257
hypocalcemia, 257–258
Caloric vestibulo-ocular responses, 65, 68
Canavan’s disease, 114
Cancer, 238–240
Carbon dioxide narcosis, 231
Cardiopulmonary arrest
coma after
outcomes, 352
pitfalls in evaluation of, 354–355
mortality rates for, 343
Cardiopulmonary bypass surgery, 218
Cardiopulmonary resuscitation, 206–207, 207f
Carotid ischemic lesions, 152
Case law, 376–377
Cataplexy, 20b
Catatonia, 299, 302–304, 303t
Central homunculus, 27
Central Horner’s syndrome, 57–58
Central nervous system infections
acute bacterial leptomeningitis, 262–265
diagnosis of, 262
differential diagnosis, 270t
prognosis after, 356
Central neurogenic hyperventilation, 50f, 51
Central pontine myelinolysis, 171
Central sleep apnea, 52
Central transtentorial herniation
clinical findings of, 107–110
description of, 101–102
diencephalic stage of, 107–108, 108f–109f
medullary stage of, 109
midbrain stage of, 107–108
pontine stage of, 108–109
Central venous thrombosis, 169t
Cerebellar abscess, 149–150, 150t
Cerebellar cognitive affective syndrome, 306–307
Cerebellar hematoma, 323
Cerebellar hemorrhage
algorithm for, 148f
brainstem compression by, 145
clinical findings of, 146t
computed tomography findings, 147
description of, 138b–139b
hypertension and, 145–146
surgical interventions for, 147, 148f
Cerebellar infarction, 139b, 148–149, 324
Cerebellar mass, 91
Cerebellar mutism, 306
Cerebellar tonsils, 100
Cerebellar tumors, 91, 150
Cerebellopontine angle lesion, 91
Cerebral angiography, 335–336
Cerebral artery infarction, 153f
Cerebral autosomal dominant arteriopathy with
subcortical infarcts and leukoencephalopathy, 168,
276
Cerebral biopsy, 273
Cerebral blood flow
brain death evaluations, 335–336
during cardiac arrest, 206
hypoglycemia effects on, 204
hypoxia effects on, 211
increases in, 45
during neural activity, 198, 200
normal levels of, 198
reductions in
causes of, 200
in clouding of consciousness, 6
global, 200
loss of consciousness caused by, 201
regional, 200
regulation of, 43, 202
Cerebral cortex
description of, 25
diffuse, bilateral destruction of, 114
hypoxia effects on, 31f
Cerebral edema, 263
Cerebral glucose consumption, 204
Cerebral herniation, 263–265
Cerebral ischemia, multifocal, 215–216
Cerebral malaria, 217
Cerebral metabolic rate
description of, 204
in minimally conscious state patients, 374
Cerebral metabolism, 374–375
Cerebral oxygen consumption, 6
Cerebral perfusion pressure
decreased, 93
description of, 43, 45
intracranial pressure effects on, 93
Cerebral scintigraphy, 336
Cerebral vascular lesions, 137, 138b–139b
Cerebral venous hypoxia, 211
Cerebrospinal fluid
in herpes simplex encephalitis, 268
herpes simplex encephalitis findings,
157, 157t
lumbar puncture evaluations, 81–82
meningitis findings, 134, 134t
obstruction of, 91
subarachnoid hemorrhage evaluation, 130
systemic lupus erythematosus findings, 275
Cerebrospinal fluid pressure, 92
Cerveau isole, 12
Chemoreceptors, 188
Cheyne-Stokes respiration, 49–51, 50f, 75, 187
Chloromas, 144
Choline, 80
Cholinergic neurons, 15
Chronic liver failure, 224
Chronic meningitis, 133, 265–266
Chronic relapsing pancreatitis, 231
Chronic subdural hematoma, 123–124
Ciliospinal reflex, 54, 57, 59
Circulatory assessments, 313
Closed head traumatic brain injury, 159–161
Index
389
Clouding of consciousness
cerebral oxygen consumption reductions
associated with, 6
definition of, 6
Cluster breathing, 50f
Cocaine, 210, 242t
Cofactor deficiency, 223–224
Cognition, 185, 373
Cognitive deficits, 7
Cold caloric stimulation, 193
Collier’s sign, 64
Coma
causes of, 4t
definition of, 7
depth of, 7
diagnosis of, 9, 309–311
drug-induced causes of. See Drug
intoxications
duration of, 346, 349
history-taking, 9
hypoglycemic, 210
locked-in syndrome vs., 7
metabolic. See Metabolic coma
premonitory causes of, 39–40
prognosis in, 343–344
sleep vs., 5, 25
structural. See Structural coma
thalamic causes of, 33
Coma cocktail, 316
Coma of unknown origin, 332, 338
Coma scales
description of, 41b
FOUR Score, 41b, 311
Glasgow Coma Scale. See Glasgow
Coma Scale
Community-acquired meningitis, 132–133, 133t
Compressive lesions
angiogenesis caused by, 94
arousal system affected by, 90
consciousness impairments caused by,
88–90
diencephalon, 90
infratentorial, 142–143
local tissue ischemia induced by, 94
mechanism of action, 89–90
midbrain, 90
posterior fossa, 90–91
sites of, 89t
supratentorial, 120
types of, 121t
Computed tomography
brain abscess findings, 142f
cerebellar hemorrhage findings, 147
description of, 78, 79f
epidural hematoma findings, 122f
hepatic encephalopathy evaluations, 225
intracerebral hemorrhage findings, 136f
meningioma evaluation, 127
meningitis evaluations, 133–134, 135t
subarachnoid hemorrhage findings,
130, 130f
subdural hematoma evaluations, 125, 125f
supratentorial mass lesion evaluations, 321
Computed tomography angiography, 78
Concussion, 161
Confusion Assessment Method for the Intensive
Care Unit, 184t
Conjugate lateral deviation, 69–70
Conjugate vertical deviation, 70
Consciousness
altered state of. See Altered state
of consciousness
clouding of, 6
components of, 5
content of, 5
definition of, 5
loss of. See Loss of consciousness
Convergence nystagmus, 71
Conversion hysteria, 299
Conversion reactions, 299–302
Corneal erosions, 317
Corneal reflex, 64
Corneal responses, 64, 320
Corneal trauma, 64
Cortical blindness, 77
Corticosteroids
Cushing’s syndrome treated with, 235–236
in diabetes mellitus patients, 233
herniation treated with, 322
meningitis treated with, 134, 322
Coup-contrecoup injury, 159
Craniopharyngiomas, 128
Creatine, 80
Creutzfeldt-Jakob disease, 266, 277
Cushing reflex, 44, 97b
Cushing’s disease, 236
Cushing’s syndrome, 235–236
Cutaneous reflexes, 72
Cytotoxic edema, 94f, 95
Decerebrate rigidity, 74–75, 77, 324
Decompressive craniotomy, 152, 323
Decorticate rigidity, 74, 77, 324
Delayed encephalopathy, 161–162, 219
Delirium
acute states, 282–284
with agitation, 6, 317
‘‘Amytal interview’’ for, 307–308, 327
attention disorders in, 185
characteristics of, 181
definition of, 6
dementia and, 8
drug withdrawal, 283
drug-induced, 284
electroencephalogram evaluations, 304
intensive care unit, 283–284
postoperative, 283
signs and symptoms of, 6
Delirium tremens, 283
Delusions, 6
Dementia, 7–8
Depressant drug coma, 241, 245t, 357
Descending sympathoexcitatory pathways, 44
Destructive lesions
description of, 88, 114
infratentorial, 162–163
sites of, 89t
supratentorial. See Supratentorial
destructive lesions
types of, 121t
390
Index
Desynchronized sleep, 16b
Dexamethasone, 322
Diabetes mellitus
autonomic neuropathy caused by, 234
coma in, 232t
definition of, 232
hyperglycemia in, 233–234
hyperosmolality in, 232
hypoglycemia in, 234
renal insufficiency caused by, 234
stupor in, 232t
Diabetic encephalopathy, 222
Diabetic ketoacidosis, 187, 232–234, 309
Diabetic lactic acidosis, 233
Dialysis disequilibrium syndrome, 229
Diencephalic stage, of central transtentorial
herniation, 107–110, 108f–109f
Diencephalon
autoimmune disorders that affect, 115
compression of, 90
destruction disease of, 114–115
injuries to
description of, 32–33
pupillary responses after, 58
lateral displacement of, 97b, 100
lesions of, 88
Diffuse axonal injury, 161
Diffusion tensor imaging, 371f
Dipping, ocular, 69t, 71–72
Disorientation, 185
Disseminated intravascular coagulation, 217
Distal basilar occlusion, 152–154
Distractibility, 185
Do not resuscitate order, 376
Doll’s eye response
in catatonia, 303
in central transtentorial herniation,
108f–109f
definition of, 65
Dopamine, 209
Dorsal midbrain compression, 102,
110–112
Dorsal raphe nuclei, 15
Drop attacks, 213–214
Drowning, 260
Drug intoxications. See also Overdoses
acetaminophen, 245, 326
antidepressants, 241, 245–246
antidotes for, 251t
benzodiazepines, 242t, 245
evaluation of, 324
heroin, 243
list of, 242t
management of, 326
opioids/opiates, 242t, 243
overview of, 240, 240t
proconvulsants, 247t
prognosis after, 357
sedatives, 240–241, 243–245
testing for, 240, 241t
Drug withdrawal delirium, 283
Drug-induced delirium, 284
Drunkenness. See Ethanol intoxication
Dural tumors, 120, 127, 144
Duret hemorrhages, 102, 103f
Edinger-Westphal nucleus, 56–57
Elderly
cerebellar infarction in, 148
hyperglycemia in, 222
meningitis in, 133, 263
traumatic brain injury in, 345
Electrocerebral inactivity, 337
Electroencephalography
alpha pattern, 82
brain death determinations, 337–339, 338t
catatonia evaluations, 304
delirium evaluations, 304
history of, 12
indications for, 82
sinusoidal appearance, 13b
traumatic brain injury-related abnormalities, 346
Electromyogram, 16b
Embolism
to brain, 218
from cardiopulmonary bypass surgery, 218
fat, 217–218
pulmonary, 214
Empyema, 126–127, 144
Encephale isole, 12
Encephalitis, viral
acute, 266–269
acute toxic encephalopathy during, 266, 269–271
cerebral biopsy for, 273
classification of, 266
description of, 156–157, 157t
herpes simplex encephalitis, 157, 157t,
267–269, 315
overview of, 266–267
parainfectious encephalomyelitis, 266, 271–273
Encephalitis lethargica, 12
Encephalomyelitis, acute disseminated, 157–158
Encephalopathy
delayed postanoxic, 219
diabetic, 222
Hashimoto’s, 237
hepatic
diagnosis of, 225
hyperventilation associated with, 224
mild, 227
onset of, 224
pathology of, 224
pupillary findings in, 225
hypernatremic, 256
hyponatremic, 254t
hypoxic-ischemic, 352–354
metabolic. See Metabolic encephalopathy
pancreatic, 231–232
pulmonary, 231
toxic, 262, 266, 269–271
uremic, 227–229
Wernicke’s
causes of, 223
description of, 11
thiamine prophylaxis, 77, 223, 313
End artery hemorrhages, 137, 139
Epidural abscess, 126–127, 144
Epidural hematoma, 121–123, 143–144
Epilepsy, 280–281, 315
Epileptic seizures, 213–214, 304–306
Ethanol intoxication, 246, 248
Index
391
Ethylene glycol, 250
Evoked potentials
brain death determinations, 337–338, 338t
description of, 82–83
somatosensory
in anoxic-ischemic encephalopathy, 354t
description of, 346
vegetative state evaluations, 359–360
Examination
airway, 42–43
circulation, 43–46
coma scales. See Coma scales
corneal responses, 320
eye opening, 319
history-taking, 39–40, 317–318
motor responses, 320
neurologic, 9, 318–319
oculocephalic responses, 319
overview of, 38–39, 39t
physical, 40
pupillary reactions, 319
respiration. See Respiration
skeletal muscle tone, 320
tendon reflexes, 320
of unconscious patient, 317–320
verbal responses, 319
vestibulo-ocular responses, 65, 320
Excitatory amino acids, 114
Extradural hematoma, 309–310
Eye(s)
conjugate lateral deviation, 69–70
conjugate vertical deviation, 70
nystagmoid jerks of, 71–72
opening of, 319
Eye movements
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