Modified Fisher Scale (SAH vasospasm risk)
Modified Fisher Scale (SAH vasospasm risk) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
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What this is
Modified Fisher Scale (SAH vasospasm risk) is one of 230 deterministic tools in Sophie Well's Clinical Scoring & Risk group. Modified Fisher Scale (SAH vasospasm risk) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
Frontera JA, Claassen J, Schmidt JM, et al. Prediction of symptomatic vasospasm after subarachnoid hemorrhage: the modified Fisher scale. Neurosurgery. 2006;59(1):21-27. Read the source ↗
Worked example: Modified Fisher grade 4 (thick SAH with IVH): symptomatic-vasospasm risk ~40%.
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