British Journal of Anaesthesia, 1985, Vol. 57, No. 9 924-928
© 1985 The Board of Management and Trustees of the British Journal of Anaesthesia
case-report |
MONITORING OF BRAINSTEM AUDITORY EVOKED POTENTIALS DURING BASILAR ARTERY OCCLUSION IN MAN

Address for correspondence: Department of Anaesthesia, University Hospital, P. O. Box 5339, Postal Stn. A. London, Canada. N6A 5A5.
Brainstem auditory evoked potentials (BAEP) were recorded during surgery as a monitor of brainstem function in three patients undergoing posterior fossa surgery for dipping of basilar aneurysms. In two patients, ligation of the basilar artery, and of a vertebral artery, was associated with deterioration in BAEP and resulted in postoperative brainstem dysfunction. In the third patient, postoperative transient neurological dysfunction occurred following temporary occlusion of the basilar artery and this correlated with intra-and postoperative changes in BAEP. BAEP monitoring is recommended where temporary or permanent occlusion of the vertebrobasilar system is planned.