73. 脳動脈瘤後頭蓋窩手術における聴性脳幹反応による術中監視の意義

概要

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We operated on vertebral junctional aneurysm which was opacified only via the right vertebral artery, under the monitoring of intraoperative brain-stem auditory evoked potentials, BAEP's. During the operation, the BAEP was profoundly changed after applying a temporary clip to the rt. VA, namely the development of the each wave became poor and the latency of the wave V was significantly prolonged. But after releasing the temporary clip the distorted waveform became normalized gradually and the initial waveform was regained until the closing of the dura. The change of the BAEP which was seen in this case was reversible retrospectively. It is necessary for the future to establish the objective and quantitative criteria which can indicate the critical level to operative procedures.
The Japanese Society on Surgery for Cerebral Strokeの論文