Hunt-Hess Grade (Subarachnoid Haemorrhage) — free guideline decision tool
Grade clinical severity of aneurysmal subarachnoid haemorrhage (Hunt-Hess).
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.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Grade | I — Asymptomatic or mild headache |
|---|
→Hunt-Hess1/5
- Note：Higher grades correlate with worse survival and outcome.
| Grade | V — Coma, decerebrate posturing |
|---|
→Hunt-Hess5/5
- Note：Higher grades correlate with worse survival and outcome.
Common questions
What is Hunt-Hess Grade (Subarachnoid Haemorrhage)?
Grade clinical severity of aneurysmal subarachnoid haemorrhage (Hunt-Hess).
How is Hunt-Hess Grade (Subarachnoid Haemorrhage) calculated? What is the core formula?
Grade I (asymptomatic/mild headache) to V (deep coma, decerebrate). Higher grades carry higher mortality.
When is Hunt-Hess Grade (Subarachnoid Haemorrhage) used?
Stratify prognosis and surgical risk in SAH.
What are the key clinical points for Hunt-Hess Grade (Subarachnoid Haemorrhage)?
Predicts surgical risk and outcome. Grades IV–V indicate poor prognosis. Often reported alongside the WFNS grade.
What are the limits and cautions when using Hunt-Hess Grade (Subarachnoid Haemorrhage)?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is Hunt-Hess Grade (Subarachnoid Haemorrhage) calculated in practice? Can you show a worked example?
Inputs: Grade I — Asymptomatic or mild headache → Result: Hunt-Hess 1 /5（Note: Higher grades correlate with worse survival and outcome.） Inputs: Grade V — Coma, decerebrate posturing → Result: Hunt-Hess 5 /5（Note: Higher grades correlate with worse survival and outcome.）
Run Hunt-Hess Grade (Subarachnoid Haemorrhage) now
Grade clinical severity of aneurysmal subarachnoid haemorrhage (Hunt-Hess).
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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