Comparison of the effects of etomidate and propofol combined with remifentanil and guided by comparable BIS on transcranial electrical motor-evoked potentials during spinal surgery.

Background:Transcranial electrical motor-evoked potentials (TceMEPs) can provide early warning of possible motor compromise during surgery. There are fewer reports comparing the effects of etomidate and propofol infusion on TceMEPs when used for the maintenance of anesthesia and guided by comparable