Hunt and Hess Classification

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The Hunt and Hess Classification is used to grade the severity of Subarachnoid hemorrhages based on clinical presentation and additionally provides an assessment of the patient's prognosis. The Hunt and Hess Classification was published in 1968[^1].

Classification

Hunt and Hess Grade

Clinical condition

Perioperative mortality (%)

Grade 1

Asymptomatic or mild neck pain and headache.

0-5 %

Grade 2

Moderate to severe headache, neck stiffness, no neurological deficits except cranial nerve palsy.

1-10 %

Grade 3

Drowsiness, confusion, or mild focal deficits.

10-15 %

Grade 4

Stupor, moderate to severe Hemiparesis, early Decerebrate rigidity, and autonomic disturbances.

60-70 %

Grade 5

Deep coma, decerebrate rigidity, moribund appearance.

70-100 %

Figure

Hunt and Hess classification
Illustration of the Hunt and Hess classification from the original publication in 1968.

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  • Text changed: “The Hunt and Hess classification is used to categorize the severity of subarachnoid hemorrhages based on clinical symptomatology and additionally provides an assessment of the patient’s prognosis. The Hunt and Hess classification was published in 1968[^1].”“The Hunt and Hess Classification is used to grade the severity of Subarachnoid hemorrhages based on clinical presentation and additionally provides an assessment of the patient's prognosis. The Hunt and Hess Classification was published in 1968[^1].”

Article created on · Alaric Steinmetz

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