Clinical Decision Rules to Rule Out Subarachnoid Hemorrhage for Acute Headache

Guidelines, News Friday, September 27th, 2013

JAMA: 9/25/13

Importance  Three clinical decision rules were previously derived to identify patients with headache requiring investigations to rule out subarachnoid hemorrhage.

Objective  To assess the accuracy, reliability, acceptability, and potential refinement (ie, to improve sensitivity or specificity) of these rules in a new cohort of patients with headache.

Design, Setting, and Patients  Multicenter cohort study conducted at 10 university-affiliated Canadian tertiary care emergency departments from April 2006 to July 2010. Enrolled patients were 2131 adults with a headache peaking within 1 hour and no neurologic deficits. Physicians completed data forms after assessing eligible patients prior to investigations. Read more

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