Acute Subdural Hematoma of Arterial Origin following Ventriculoperitoneal Shunting

—Report of Two Cases—

Abstract

Two patients developed acute subdural hematomas of arterial origin following ventriculoperitoneal shunting for normal-pressure hydrocephalus. The causative factors appeared to be low intracranial pressure, a consequence of the shunting, and rupture of small arterial branches due to movement of the brain within the intradural cavity. These cases are described and the importance of this rare complication is discussed.