Temporary loss of intraoperative motor-evoked potential and permanent loss of somatosensory-evoked potentials associated with a postoperative sensory deficit.
We describe a case of the temporary loss of right popliteal fossa intraoperative neurogenic motor-evoked potential and the permanent loss of right median and ulnar somatosensory-evoked potentials (SSEPs) with retention of posterior tibial (SSEPs) during intramedullary spinal cord surgery in a 28-year-old man. Postoperatively, the patient had preserved motor function in all extremities and loss of proprioception, two-point discrimination, and vibration in his right upper extremity. The complementary and beneficial use of intraoperative monitoring of both motor-evoked potentials and SSEPs during spinal cord surgery is discussed.
Lorenzini
N A
NA
Department of Anesthesiology, Wilford Hall Medical Center, Lackland Air Force Base, San Antonio, Texas 78236-5300, USA.
Schneider
J H
JH
D000328:Adult; D019054:Evoked Potentials, Motor / Q000502:physiology*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D006801:Humans; D007431:Intraoperative Complications / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008297:Male; D016343:Monitoring, Intraoperative; D009186:Myelin Sheath / Q000473:pathology; D011183:Postoperative Complications / Q000503:physiopathology*; D013120:Spinal Cord Neoplasms / Q000473:pathology / Q000601:surgery