Purpose: We evaluated the effects of an acute cerebrovascular accident on the lower urinary tract and correlated the site of cerebrovascular accident with findings on urodynamic study. Materials and Methods: A total of 45 men and 15 women underwent a complete urodynamic study with electromyography within 72 hours of a cerebrovascular accident, Patients were divided into 5 different groups based on urodynamic findings, Results: The majority of cortical and internal capsule lesions resulted in detrusor hyperreflexia. A total of 28 patients (47%) had urinary retention, mainly due to detrusor areflexia (75%). Of 20 patients with hemorrhagic infarcts 17 (85%) had areflexia, compared to only 4 of 40 (10%) with ischemic infarcts. All 6 patients with cerebellar infarction had detrusor areflexia. Conclusions: All results confirm many previously reported findings. Ln addition, there was a specific correlation of cerebellar and hemorrhagic infarctions with detrusor areflexia.