Nimodipine-treated subarachnoid hemorrhage associated with acute pseudo-obstruction of the colon.

Nimodipine is being used with increasing frequency in the prevention or treatment of vasospasm due to subarachnoid hemorrhage. Few side effects have been described. An acute pseudo-obstruction of the colon (Ogilvie's syndrome) in a patient treated with an intravenous infusion of nimodipine is reported. The possible relationship between this serious complication and the use of this drug is discussed.