Coma anatomy
Dysfunction of both hemispheres or the Reticular Activating System
Persistent Vegitative State definition
Complete lack of awareness, but preservation of some autonomic function (brainstem)
1 reason for seizure recurrence
Noncompliance
Coma history -> Cause
Cranial nerve exit mnemonic
2244 2- above brainstem 2- midbrain 4- pons 4- medulla
Pupillary constriction
CN 3 Midbrain
Vestibular system
CN 8 Pons
Pons lesion pupils
Pinpoint (para fine, sympa destroyed)
Midbrain lesion pupils
Midposition, fixed
Coma nystagmus
Slow deviation, no nystagmus (no frontal lobe)
COWS
Opposite for comatose (mnemonic is for nystagmus, not deviation)
Shotgun Tx for ER coma
Glucose, Thiamine, Naloxone
Glasgow Coma Scale - 3 Measurements
Coma time length
4 weeks max
Definition of death
Cessation of brain function
Coma definition
Not responsive, but some brainstem reflexes
3 Findings of Brain Death
Positive apnea test
PCO2 > 60
Breathing apparatus in brainstem
Pons & Medulla