Direct noninvasive monitoring of spinal cord motor function during thoracic aortic occlusion: Use of motor evoked potentials John C. Laschinger, M.D.,

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Presentation transcript:

Direct noninvasive monitoring of spinal cord motor function during thoracic aortic occlusion: Use of motor evoked potentials John C. Laschinger, M.D., Jeffrey Owen, Ph.D., Michael Rosenbloom, M.D., James L. Cox, M.D., Nicholas T. Kouchoukos, M.D. Journal of Vascular Surgery Volume 7, Issue 1, Pages 161-171 (January 1988) DOI: 10.1016/0741-5214(88)90389-8 Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Schematic representation of MEP monitoring system. See text for details. Journal of Vascular Surgery 1988 7, 161-171DOI: (10.1016/0741-5214(88)90389-8) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Normal MEP recordings. Note progression of conduction down the spinal cord (T-10 to L-4). Normal response is biphasic at all spinal cord levels. Journal of Vascular Surgery 1988 7, 161-171DOI: (10.1016/0741-5214(88)90389-8) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 MEP response signifying early ischemia. Note that progression of conduction down the cord is maintained but second peak (P2) is absent at all levels. Journal of Vascular Surgery 1988 7, 161-171DOI: (10.1016/0741-5214(88)90389-8) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 MEP response signifying late ischemia. Note loss of conduction at all levels with loss of both peaks (P1 and P2). Journal of Vascular Surgery 1988 7, 161-171DOI: (10.1016/0741-5214(88)90389-8) Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions