Chapter 20: Subarachnoid Hemorrhage
Excluding head trauma, the most common cause of subarachnoid hemorrhage (SAH) is rupture of an intracranial saccular aneurysm; other etiologies include bleeding from a vascular malformation (arteriovenous malformation or dural arteriovenous fistula) and extension into the subarachnoid space from a primary intracerebral hemorrhage. Approximately 2% of the population harbor aneurysms, and 25,000–30,000 cases of aneurysmal rupture producing SAH occur each year in the United States; rupture risk for aneurysms <10 mm in size is ∼0.1% per year; for unruptured aneurysms, the surgical morbidity rate far exceeds the percentage.
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Citation
Kasper, Dennis L., et al., editors. "Chapter 20: Subarachnoid Hemorrhage." Harrison's Manual of Medicine, 20th ed., McGraw Hill Inc., 2020. harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623101/all/Chapter_20:_Subarachnoid_Hemorrhage.
Chapter 20: Subarachnoid Hemorrhage. In: Kasper DLD, Fauci ASA, Hauser SLS, et al, eds. Harrison's Manual of Medicine. McGraw Hill Inc.; 2020. https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623101/all/Chapter_20:_Subarachnoid_Hemorrhage. Accessed December 9, 2024.
Chapter 20: Subarachnoid Hemorrhage. (2020). In Kasper, D. L., Fauci, A. S., Hauser, S. L., Longo, D. L., Jameson, J. L., & Loscalzo, J. (Eds.), Harrison's Manual of Medicine (20th ed.). McGraw Hill Inc.. https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623101/all/Chapter_20:_Subarachnoid_Hemorrhage
Chapter 20: Subarachnoid Hemorrhage [Internet]. In: Kasper DLD, Fauci ASA, Hauser SLS, Longo DLD, Jameson JLJ, Loscalzo JJ, editors. Harrison's Manual of Medicine. McGraw Hill Inc.; 2020. [cited 2024 December 09]. Available from: https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623101/all/Chapter_20:_Subarachnoid_Hemorrhage.
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