Angiographic appearance of a cerebral aneurysm rupture

A 53-year-old woman was referred because a CT scan disclosed a subarachnoid hemorrhage. An aneurysm was seen on digital subtraction angiography, which suddenly ruptured (video 1 on the Neurology (R) Web site at Neurology.org) during the study, suggesting the cause of the hemorrhage (video 2). The rate of contrast emission was 3 mL/s with a total volume of 16 mL; the pressure was 200 psi. External ventricular drainage was performed emergently, and the patient was transferred to the intensive care unit. She recovered uneventfully after the aneurysm clipping.