Evoked potential Dlonitoring in

~urol Neurosurg 1ge: clinical and complications, but the monitoring methods must be simple to perform, sensitive, and reliable. Median nerve somatosensory evoked potential (SEP) monitoring fulfills these criteria. Between 1985 nd 1990, we performed 994 h S. Successful operations of the carotid artery with SEP monitoring. In 92% of the cases, we were able t obtain viable SEP tracings. 3.. Case report. J .. In seven cases, irreversible SEP loss was followed by a new neurologic deficit. In one ca e only, neurologic complica­ tions ensued without SEP loss. Although immediate intraoperative therapeutic options are limited, the monitoring oka S. Pneuma. enhances patient security by allowing intraoperative detection and postoperative analysis of complications. SEP moni­ primary pontine toring appears to be at least as effective as conventional EEG monitoring. The viability, ensitivity, and reliability of of two cases. J :46. newer methods, such as modified spectral EEG analysis, must be measured by this establi hed procedure.