WFNS Grade (Subarachnoid Haemorrhage) — free guideline decision tool
Grade subarachnoid haemorrhage severity with the WFNS scale.
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.
| WFNS grade | I — GCS 15, no motor deficit |
|---|
→WFNS1/5
- Note：Grades IV–V carry high morbidity and mortality.
| WFNS grade | V — GCS 3–6 |
|---|
→WFNS5/5
- Note：Grades IV–V carry high morbidity and mortality.
Common questions
What is WFNS Grade (Subarachnoid Haemorrhage)?
Grade subarachnoid haemorrhage severity with the WFNS scale.
How is WFNS Grade (Subarachnoid Haemorrhage) calculated? What is the core formula?
Grade I (GCS 15) to V (GCS 3–6), incorporating presence of a major focal deficit at grades II–III.
When is WFNS Grade (Subarachnoid Haemorrhage) used?
Standardise SAH severity using GCS and motor deficit.
What are the key clinical points for WFNS Grade (Subarachnoid Haemorrhage)?
GCS-based and more reproducible than Hunt-Hess. Higher grades predict worse outcome. Assess after resuscitation/stabilisation.
What are the limits and cautions when using WFNS 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 WFNS Grade (Subarachnoid Haemorrhage) calculated in practice? Can you show a worked example?
Inputs: WFNS grade I — GCS 15, no motor deficit → Result: WFNS 1 /5（Note: Grades IV–V carry high morbidity and mortality.） Inputs: WFNS grade V — GCS 3–6 → Result: WFNS 5 /5（Note: Grades IV–V carry high morbidity and mortality.）
Run WFNS Grade (Subarachnoid Haemorrhage) now
Grade subarachnoid haemorrhage severity with the WFNS scale.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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