Table 1a.

Sarnat & Sarnat classification

Finding	Stage 1	Stage 2	Stage 3
Level of consciousness	Hyper-alert	Lethargic	Stupor, coma
Muscle tone	Normal	Hypotonic	Flask
Posture	Normal	Flexion	Decerebrated
Tendon reflexes/clonus	Hyperactive	Hyperactive	Absent
Myoclonus	Present	Present	Absent
Moro reflex	Live	Weak	Absent
Pupillae	Mydriasis	Myosis	Anisocoric
Seizures	Absent	Frequent	Decerebration
EEG findings	Normal	Ranging between low voltage to seizure activity	Burst suppression, isoelectric activity
Time	Less than 24 hours	1-14 days	A few days-weeks
Outcome	Good	Variable	Mortality or severe sequela

EEG: electroencephalography