American Board of Internal Medicine (ABIM) Certification Practice Exam

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For how many days should oral nimodipine be administered after an aneurysmal subarachnoid hemorrhage?

7 days
14 days
21 days
30 days

The correct answer is: 21 days

The administration of oral nimodipine after an aneurysmal subarachnoid hemorrhage is typically recommended for a duration of 21 days. Nimodipine is a calcium channel blocker that has been shown to improve neurological outcomes by preventing vasospasm, a serious complication that can occur following subarachnoid hemorrhage. This specific time frame of 21 days is based on clinical studies and guidelines that emphasize the importance of this medication during the critical period when vasospasm is most likely to develop, usually occurring within the first three weeks following the hemorrhage. Continuing treatment for the full 21-day course ensures that patients receive optimal protection against the potential neurological deficits associated with cerebral vasospasm, which can lead to further complications.