Guidelines for the management of aneurysmal subarachnoid hemorrhage. A statement for healthcare professionals from a special writing group of the Stroke Council, American Heart Association.

Subarachnoid hemorrhage (SAH) is a common and often devastating occurrence; each year approx- imately 30 000 Americans have nontraumatic SAH.1 Despite considerable advances in diagnostic techniques, surgical, and anesthetic techniques and perioperative management, the outcome for patients with SAH remains poor, with overall mortality rates of 25% and significant morbidity among approximately 50% of survivors.2The evolution of treatment protocols for patients with subarachnoid hemorrhage has been influenced consid- erably by large, multicenter prospective cohort analyses and, more recently, multicenter prospective, random- ized trials.Nevertheless, several accepted treatment modalities have not been substantiated by rigorous clinical scientific assessment.In many cases specific treatments for SAH are not amenable to testing by randomized, prospective trials because of practical or ethical considerations.To address these issues, the Stroke Council of the American Heart Association formed a task force to develop practice guidelines for the management of aneurysmal subarachnoid hemorrhage.A consensus committee reviewed existing data in this field and prepared recommendations.The database for this re- view was the existing literature regarding SAH assem- bled by the committee; a formal literature review was not conducted.The reports reviewed were selected on the basis of study design, sample size, and relevance to the issue involved.Each report was graded according to existing criteria of scientific merit,3 and a grading scale derived from these data (Table 1).Recommendations "Guidelines for the Management of Aneurysmal Subarachnoid Hemorrhage" was approved by the Science Advisory Committee of the American Heart Association on June 16, 1994.This report is being published simultaneously in Circulation and Stroke.