1. Prognosis Sarnat Stage Clinical Symptoms Outcome 1 Unaffected 2
Mild hyper-alert, irritable and hyper-reflexic; sympathetic autonomic symptoms, Normal EEG; Symptoms resolve by 2 days and neurological examination normal by 1-2 weeks
Unaffected 2
 Moderate Lethargy, mild hypotonia, hyper-reflexic; Parasympathetic autonomic symptoms; Seizures and abnormal EEG; Symptoms last 2-14 days
25% develop cerebral palsy 3
Severe stuporous, flaccid, hypo-reflexic; depressed autonomic function; Seizures uncommon, suppressed EEG;
Symptoms may persist for weeks
disabilty or death likely