Detection of stroke during cardiac operations with somatosensory evoked responses.
Publication/Presentation Date
10-1-1996
Abstract
OBJECTIVES: The objectives of this study were to determine if monitoring of intraoperative somatosensory evoked potentials could be used to detect stroke during cardiac operations and to establish indicators of cerebral ischemia based on changes in these potentials.
METHODS: Twenty-five patients undergoing cardiac operations underwent preoperative and postoperative neurologic examinations as well as intraoperative recording of somatosensory evoked potentials. Detailed analysis of the waveforms of these potentials was performed.
RESULTS: Two of the 25 patients had intraoperative strokes. These patients and only these patients had changes in their somatosensory evoked potentials during the operation suggesting cerebral ischemia. The unilateral disappearance of the cortical somatosensory evoked potential waves correlated significantly with the clinical outcome of stroke (p < 0.004). Ischemic changes were detected in real time and were related to the removal of the aortic crossclamp in one patient and to the initiation of cardiopulmonary bypass in the other.
CONCLUSIONS: Somatosensory evoked potentials can detect intraoperative stroke during cardiac operations. Acute, unilateral decreases in amplitude of the cortical potential are more useful than changes in latency in detecting intraoperative stroke.
Volume
112
Issue
4
First Page
962
Last Page
972
ISSN
0022-5223
Published In/Presented At
Stecker, M. M., Cheung, A. T., Patterson, T., Savino, J. S., Weiss, S. J., Richards, R. M., Bavaria, J. E., & Gardner, T. J. (1996). Detection of stroke during cardiac operations with somatosensory evoked responses. The Journal of thoracic and cardiovascular surgery, 112(4), 962–972. https://doi.org/10.1016/S0022-5223(96)70096-X
Disciplines
Medicine and Health Sciences
PubMedID
8873722
Department(s)
Department of Surgery
Document Type
Article