<< An Evidence-Based Approach To Diagnosis And Management Of Subarachnoid Hemorrhage In The Emergency Department (Stroke CME)


Subarachnoid hemorrhage (SAH) is the extravasation of blood into the cerebrospinal fluid (CSF). It is usually a diffuse process that results from rupture of corticomeningeal vessels and from hemorrhagic contusions of the brain.1 Trauma is the most common cause of all SAH; however, the majority (85%) of nontraumatic, or spontaneous SAH (sSAH), the focus of this article, are related to aneurysm rupture.2-4 Aneurysmal SAH (aSAH) and other forms of sSAH can pose diagnostic challenges in the emergency department (ED).

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