Subarachnoid Haemorrhage Hunt-Hess Grade and Fisher Scale

Calculates Hunt-Hess clinical grade and modified Fisher CT grade for subarachnoid haemorrhage to predict surgical risk, vasospasm risk, and outcomes, with nimodipine dosing for cerebral vasospasm prevention.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Calculates Hunt-Hess clinical grade and modified Fisher CT grade for subarachnoid haemorrhage to predict surgical risk, vasospasm risk, and outcomes, with nimodipine dosing for cerebral vasospasm prevention. Use the sah hunt-hess fisher result to inform your calculation.

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