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Effect of extradural morphine on somatosensory evoked potentials to dermatomal stimulation
1Department of Anaesthesiology, Hvidovre University Hospital, Denmark.
British Journal of Anaesthesia
|November 1, 1987
Abstract:
The effect of the extradural (L2-3) administration of morphine 6 mg on early (less than 0.5 s) somatosensory evoked cortical potentials (SEP) to electrical stimulation of the L1- and S1-dermatomes was examined in eight patients. Extradural morphine did not influence SEP amplitude. SEP latency did not change, except for a minor increase in the latencies of the onset and the P2 components following S1 stimulation.