title: Delayed response of transcranial myogenic motor-evoked potential monitoring to spinal cord ischemia during repair surgery for descending thoracic aortic aneurysm.
abstract: The efficacy of transcranial myogenic motor-evoked potential (tc-MEP) monitoring during thoracic aortic surgery has been the subject of some reports, because tc-MEP monitoring can rapidly reflect changes in spinal cord blood flow during thoracic aortic cross-clamping. In this article, we present a case in which delayed loss of tc-MEP signals was observed after cross-clamping of the descending thoracic aorta. We must be aware that tc-MEPs recorded from the lower extremities can fail to provide rapid detection of spinal cord ischemia in the upper thoracic level after cross-clamping of the descending thoracic aorta.
authors.affiliation: Department of Anesthesiology, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Kakinohana
authors.forename: Masanori
authors.initials: M
authors.lastname: Abe
authors.forename: Yuji
authors.initials: Y
authors.lastname: Miyata
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Oshiro
authors.forename: Satoko
authors.initials: S
authors.lastname: Saikawa
authors.forename: Katsuya
authors.initials: K
authors.lastname: Arakaki
authors.forename: Yukio
authors.initials: Y
authors.lastname: Kuniyoshi
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Sugahara
mesh_terms: D017545:Aortic Aneurysm, Thoracic / Q000601:surgery*; D019054:Evoked Potentials, Motor; D006801:Humans; D007431:Intraoperative Complications / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods; D010264:Paraplegia / Q000209:etiology; D020760:Spinal Cord Ischemia / Q000150:complications / Q000175:diagnosis*; D013997:Time Factors