Effects of Intrathecal Morphine on Transcranial Electric Motor-Evoked Potentials in Adolescents Undergoing Posterior Spinal Fusion

Abstract

Administration of ITM in doses currently used at our institution did not cause more than a 70% attenuation of mean tceMEP amplitudes or latency changes of an ITM study group relative to control subjects during the 30-minute period after injection. Further studies are required to determine if there are delayed effects after this initial time period.