Subarachnoid hemorrhage primary prevention

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Mehrsefat, M.D. [2]

Primary Prevention

• Prevent head trauma
• Identify and treat cerebral arteriovenous malformation or cerebral aneurysm

Class I

"1. Treatment of high blood pressure with antihypertensive medication is recommended to prevent ischemic stroke, intracerebral hemorrhage, and cardiac, renal, and other end-organ injury (Level of Evidence: A)"

"2. Hypertension should be treated, and such treatment may reduce the risk of aSAH (Level of Evidence: B)"

"3. Tobacco use and alcohol misuse should be avoided to reduce the risk of aSAH (Level of Evidence: B)"

"4. After any aneurysm repair, immediate cerebrovascular imaging is generally recommended to identify remnants or recurrence of the aneurysm that may require treatment (Level of Evidence: B)"

Class IIb

"1. In addition to the size and location of the aneurysm and the patient’s age and health status, it might be reasonable to consider morphological and hemody- namic characteristics of the aneurysm when discuss- ing the risk of aneurysm rupture (Level of Evidence: B)"

"2. Consumption of a diet rich in vegetables may lower the risk of aSAH (Level of Evidence: B)"

"3. It may be reasonable to offer noninvasive screening to patients with familial (at least 1 first-degree relative) aSAH and/or a history of aSAH to evaluate for de novo aneurysms or late regrowth of a treated aneurysm, but the risks and benefits of this screening require further study (Level of Evidence: B)"