Delayed response of transcranial myogenic motor-evoked potential monitoring to spinal cord ischemia during repair surgery for descending thoracic aortic aneurysm.
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.
Kakinohana
Manabu
M
Department of Anesthesiology, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
Abe
Masanori
M
Miyata
Yuji
Y
Oshiro
Masakatsu
M
Saikawa
Satoko
S
Arakaki
Katsuya
K
Kuniyoshi
Yukio
Y
Sugahara
Kazuhiro
K
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