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Table 1 Clinical Grading as defined by the World Federation of Neurological Surgeons (WFNS), Hunt & Hess and in relation to the Glasgow Coma Scale (GCS)

From: Aneurysmatic subarachnoid haemorrhage

Grades WFNS/Hunt & Hess Symptoms described by Hunt & Hess WFNS
GCS hemiparesis/aphasia
I asymptomatic, or minimal headache and neck stiffness 15 absent
II severe headache, neck stiffness, cranial nerve palsy (optional) 13–14 absent
III drowsiness, minimal neurologic deficit 13–14 absent
IV stupor, severe neurologic deficit (hemiparesis), vegetative disturbances 7–12 present or absent
V coma, signs of decerebration 3–6 present or absent