• Emerg. Med. Clin. North Am. · Nov 2017

    Review

    Subarachnoid Hemorrhage: Updates in Diagnosis and Management.

    • Brit Long, Alex Koyfman, and Michael S Runyon.
    • Department of Emergency Medicine, San Antonio Military Medical Center, 3841 Roger Brooke Drive, Fort Sam Houston, TX 78234, USA. Electronic address: Brit.long@yahoo.com.
    • Emerg. Med. Clin. North Am. 2017 Nov 1; 35 (4): 803-824.

    AbstractSubarachnoid hemorrhage (SAH) is a neurologic emergency due to bleeding into the subarachnoid space. Mortality can reach 50%. The clinical presentation is most often in the form of headache, classically defined as maximal at onset and worst of life. The most common cause is traumatic; approximately 80% of nontraumatic SAH are due to aneurysmal rupture, with the remainder from idiopathic peri-mesencephalic hemorrhage or other less common causes. Noncontrast brain computed tomography (CT) performed within 6 hours of symptom onset has sensitivity approaching 100%. Lumbar puncture may be considered after this period for definitive diagnosis if initial CT is normal.Published by Elsevier Inc.

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