Hunt-Hess + WFNS aneurysmal SAH grading
Aneurysmal SAH grading: the Hunt-Hess grade I-V (Hunt 1968) alongside the WFNS grade derived from GCS band plus focal motor deficit (Drake 1988); returns both grades and the Hunt-Hess descriptor.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Hunt-Hess grade
- III: drowsy, mild focal deficit
- GCS for the WFNS grade
- 14
Result: Hunt-Hess 3 / WFNS 2 per Hunt 1968 + Drake 1988.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- WFNS 1
- GCS 15, no motor deficit per Drake 1988.
- WFNS 2
- GCS 13-14, no motor deficit.
- WFNS 3
- GCS 13-14, with motor deficit.
- WFNS 4
- GCS 7-12, with or without motor deficit.
- WFNS 5
- GCS 3-6, with or without motor deficit.
What you enter
- Hunt-Hess grade (I-V)
- GCS for the WFNS grade (3-15)
- Focal motor deficit (splits WFNS II/III at GCS 13-14)
How this is calculated
Hunt WE, Hess RM. Surgical risk as related to time of intervention in the repair of intracranial aneurysms. J Neurosurg. 1968;28(1):14-20. Drake CG. Report of World Federation of Neurological Surgeons committee on a universal subarachnoid hemorrhage grading scale. J Neurosurg. 1988;68(6):985-986. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.