Influence of Perioperative Hemodynamics on Spinal Cord Ischemia in Thoracoabdominal Aortic Repair Yujiro Kawanishi, MD, Kenji Okada, MD, Masamichi Matsumori,

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Influence of Perioperative Hemodynamics on Spinal Cord Ischemia in Thoracoabdominal Aortic Repair Yujiro Kawanishi, MD, Kenji Okada, MD, Masamichi Matsumori, MD, Hiroshi Tanaka, MD, Teruo Yamashita, MD, Keitaro Nakagiri, MD, Yutaka Okita, MD The Annals of Thoracic Surgery Volume 84, Issue 2, Pages 488-492 (August 2007) DOI: 10.1016/j.athoracsur.2007.02.089 Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 Duration of hypotension. T1 = systolic arterial pressure (SAP) less than 80 mm Hg or mean pressure less than 60 mm Hg during aortic cross-clamping (ACC); T2 = distal aortic perfusion pressure less than 60 mm Hg during aortic cross-clamping; T3 = SAP less than 80 mm Hg after coming off bypass; T4 = SAP less than 80 mm Hg in intensive care unit (ICU). (BP = blood pressure.) The Annals of Thoracic Surgery 2007 84, 488-492DOI: (10.1016/j.athoracsur.2007.02.089) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 Relation between arterial blood pressure and motor evoked-potential (MEP) monitoring in a patient with postoperative paraplegia. Motor evoked-potential change is shown below the graph. Motor evoked-potential amplitude recovered after transient ischemic change and disappeared in accordance with hemodynamic instability owing to serious bleeding after coming off bypass. The gray bar represents time duration of hypotension. (ACC = aortic cross-clamping; BP = blood pressure.) The Annals of Thoracic Surgery 2007 84, 488-492DOI: (10.1016/j.athoracsur.2007.02.089) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions