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Somatosensory Evoked Potentials Sensitivity Relative to EEG for Cerebral Ischemia During Carotid Endarterectomy Stroke 23:498-505, Kearse,L.A.,et al, 1992 See this aricle in Pubmed Article Abstract Twenty-three of the 53 cases studied had electroencephalographic evidence of ischemia following carotid cross-clamp.Ten of these 23 cases had an increased somatosensory evoked potential latency of 0.1 msec or greater (sensitivity 0.43).One of these 23 patients had a decrease in somatosensory evoked potential amplitude of 50%or greater(sensitivity 0. 04).Of the 30 subjects who had no electroencephalographic evidence of ischemia,13 had either no change or a decrease in somatosensory evoked potential latency(specificity 0.45).None of these 30 cases had a significant decrease in somatosensory evoked potential amplitude (specificity 1.0).If somatosensory evoked potential latencies were a sensitive method for detecting cerebral ischemia(true sensitivity of 0.95 or higher),the probability of only 10 subjects having somatosensory evoked potential latency increases would be less than 0.001.Therefore,our observed sensitivity cannot be attributed to chance.Conclusions:We conclude that measuring somatosensory evoked potentials is not a sensitive method for detecting cerebral ischemia during carotid endarterectomy.

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(click to filter results - removes previous filter) cerebral ischemia electroencephalogram endarterectomy,carotid endarterectomy,carotid-complications of endarterectomy,carotid-electroencephalogram monitoring with evoked potentials somatosensory evoked potentials

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