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How to prevent spinal cord injury during endovascular repair of thoracic aortic disease

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Abstract

The incidence of spinal cord injury in thoracic endovascular aortic repair (TEVAR) has been 3–5 % from recent major papers where sacrifice of the critical intercostal arteries is inevitable by a stent graft. Hemodynamic stability, which depends on a network of blood vessels around the cord is most important not only during but also after stent-graft deployment. High risk factors of spinal cord injury during endovascular aortic repair are (1) coverage of the left subclavian artery, (2) extensive coverage of long segments of the thoracic aorta, (3) prior downstream aortic repair, (4) compromising important intercostal (T8–L1), vertebral, pelvic and hypogastric collaterals, and (5) shaggy aorta. Preoperative, intraoperative, and postoperative managements have been required to prevent spinal cord injury with TEVAR. For imaging assessment of blood supply to spinal cord including Adamkiewicz artery, prophylactic cerebrospinal fluid drainage is mandatory, and monitoring motor-evoked potential is recommended for high risk factors of spinal cord injury. Mean arterial pressure should be maintained over 90 mmHg after stent-graft placement for a while to prevent delayed spinal cord ischemia in high-risk patients of spinal cord ischemia. Finally, because spinal cord injury during TEVAR is not rare and negligible, perioperative care during TEVAR should be strictly performed according to the protocol proposed by each cardiovascular team.

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The author has declared that no conflict of interest exists.

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  1. Department of Cardiovascular Surgery, Akane-Foundation Tsuchiya General Hospital, 3-30 Nakajimacho, Naka-Ku, Hiroshima, Hiroshima, 730-8655, Japan

    Naomichi Uchida

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Correspondence to Naomichi Uchida.

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This review was submitted at the invitation of the editorial committee.

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Uchida, N. How to prevent spinal cord injury during endovascular repair of thoracic aortic disease. Gen Thorac Cardiovasc Surg 62, 391–397 (2014). https://doi.org/10.1007/s11748-014-0395-9

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  • DOI: https://doi.org/10.1007/s11748-014-0395-9

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