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Spinal cord ischemia following simultaneous EVAR and TEVAR for concomitant thoracic and abdominal aortic aneurysms

Published:August 01, 2022DOI:https://doi.org/10.1016/j.avsg.2022.06.018

      Abstract

      Objectives

      In patients with abdominal aortic aneurysms, 10-20% have concomitant thoracic aortic pathologies. These are typically managed with staged endovascular aneurysm repair (EVAR) and thoracic endovascular aortic repair (TEVAR) due to a perceived higher risk of spinal cord ischemia from a simultaneous intervention. We aimed to determine the outcomes of patients undergoing simultaneous EVAR and TEVAR for concomitant aneurysms.

      Methods

      A retrospective cohort study was performed using the Vascular Quality Initiative registry from December 2003 to January 2021. Patients undergoing same-day EVAR and TEVAR were included and analyzed in accordance with the Society for Vascular Surgery reporting standards. Primary outcomes were technical success and spinal cord ischemia.

      Results

      Simultaneous EVAR and TEVAR was performed in 25 patients. Median age was 75.0 (IQR 63.0-79.0) years and 20 (80.0%) patients were male. Two (4.0%) patients were symptomatic and four (16.0%) presented with rupture. Median maximum infrarenal and thoracic aortic diameter was 57.0 (IQR 52.0-65.0). Infrarenal aortic neck length was 15.0mm (IQR 10.0-25.0), and diameter was 27.0mm (IQR 24.5-30.0). Median procedure time was 185.0 minutes (IQR, 117.8-251.3), fluoroscopy time 32.7 minutes (IQR, 21.8-63.1), and contrast volume 165 ml (IQR 115.0-207.0). There were three (12.0%) Type Ia endoleaks and three (12.0%) Type II endoleaks in EVAR’s, with one (4.0%) Type Ia and one (4.0%) Type II endoleak in TEVARs. In-hospital mortality occurred in three (12.0%) patients (one elective, two ruptures). Spinal cord ischemia occurred in one (4.0%) patient. This patient had a symptomatic aneurysm. Thoracic coverage extended from Zone 4 to Zone 5 and an emergent spinal drain was placed postoperatively. Symptoms were present on discharge. There was one (4.0%) conversion to open repair which occurred in a ruptured aneurysm. Technical success was achieved in 19 (76.0%) patients, however when excluding ruptured aneurysms, was achieved in 17 (81.0%) patients. Follow-up data was available for 19 (76.0%) patients at a median of 426.0 (IQR 329.0-592.5) days postoperatively. A total of 3 (12.0%) patients died during the late mortality period, at a mean of 509.0 (±503.7) days. Median change in abdominal and thoracic aortic sac diameter was -1.35mm (IQR -11.5-2.5) and 8.0 (IQR -10.5-12.0) respectively.

      Conclusions

      Simultaneous EVAR and TEVAR for concomitant abdominal and thoracic aortic aneurysms can be performed with low rates of spinal cord ischemia. Short- and mid-term outcomes are acceptable.

      Key words

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