Neonatal Hypoxic-Ischemic Encephalopathy Staging (Sarnat) — free guideline decision tool
Sarnat staging grades neonatal hypoxic-ischemic encephalopathy (HIE) as mild, moderate or severe from the overall pattern of consciousness, tone, reflexes, autonomic function and seizures.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does Neonatal Hypoxic-Ischemic Encephalopathy Staging (Sarnat) do?
Use in term/near-term newborns with suspected perinatal asphyxia to grade encephalopathy severity and decide on therapeutic hypothermia.
How is the result calculated?
A stage-3 pattern in any domain = severe (stage 3); any moderate feature or seizures = moderate (stage 2); otherwise mild (stage 1). Hypothermia eligibility = stage 2–3 + asphyxia evidence + GA ≥ 35 wk + < 6 h of age.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
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Sarnat staging grades neonatal hypoxic-ischemic encephalopathy (HIE) as mild, moderate or severe from the overall pattern of consciousness, tone, reflexes, autonomic function and seizures.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.