“…Delayed transport is often accounted for by initial presentation to a hospital without a neurosurgical service, or else by an initial misdiagnosis (23). Patients with acute SAH initially misdiagnosed as suffering from coronary heart disease (CHD) suffered up to 75% mortality because of the time wasted in ruling out CHD (23). Until the aneurysm has been secured by clipping or coiling, the patient's vital signs must be continuously monitored (with continuous recording of blood pressure and, in some cases, ECG), and the neurological status must be documented at close intervals as well (state of consciousness, Glasgow Coma Scale, pupillary responses, and any focal neurologic deficits).…”