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Hunt-Hess Clinical Grade for Subarachnoid Haemorrhage Calculator

Grade I-V; reports approximate operative mortality.

Grade an aneurysmal subarachnoid haemorrhage on the Hunt-Hess clinical scale (1968). Reports the grade and approximate operative mortality from published series: I (asymptomatic / mild headache) ~70 % favourable, II (moderate-severe headache, no focal deficit other than CN palsy) ~60 %, III (drowsy, mild focal deficit) ~50 %, IV (stupor, hemiparesis) ~20 %, V (deep coma, decerebrate) ~10 %.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

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Grade I-V; mortality approximated by published outcome series.

In depth

Grade an aneurysmal subarachnoid haemorrhage on the Hunt-Hess clinical scale (1968). Reports the grade and approximate operative mortality from published series: I (asymptomatic / mild headache) ~70 % favourable, II (moderate-severe headache, no focal deficit other than CN palsy) ~60 %, III (drowsy, mild focal deficit) ~50 %, IV (stupor, hemiparesis) ~20 %, V (deep coma, decerebrate) ~10 %.