RT Journal Article SR Electronic T1 Transient severe brain stem depression during intraarterial papaverine infusion for cerebral vasospasm. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 719 OP 723 VO 15 IS 4 A1 Barr, J D A1 Mathis, J M A1 Horton, J A YR 1994 UL http://www.ajnr.org/content/15/4/719.abstract AB A 63-year-old woman had severe, symptomatic cerebral vasospasm secondary to subarachnoid hemorrhage. We initiated simultaneous infusions of papaverine into her left vertebral and left internal carotid arteries. Twenty-five minutes after the infusions had begun, the patient had a transient reaction of respiratory arrest followed by rapid, progressive loss of brain stem function.