Stimulus Threshold for Providing Intraoperative Motor Evoked Potential

Abstract

Aim: Intraoperative neurophysiological monitoring (IOM) has been increasingly used in surgeries associated with a risk of neurological impairment. Motor evoked potential (MEP), which is a part of intraoperative neurophysiological tests, evaluates motor function intraoperatively. Most anesthetic agents have negative effect on neurophysiologic recordings because of neuronal excitability changes. Our aim was to compare the effect of anesthetic methods consisting of volatile anesthetics and intravenous anesthetics (propofol + remifentanil) on eliciting of MEP during baseline recordings for spinal surgery which is a part of neurosurgical operations.