TEVAR With Supra-Aortic Trunk Revascularization Is Associated With Increased Risk Of Periprocedural Ischemic Stroke

Abstract

OBJECTIVE Ischemic stroke is a devastating complication of thoracic endovascular aortic repair (TEVAR). This risk may be higher in more proximal aneurysms that require arch manipulation. The purpose of this study was to (1) describe 30-day stroke and death rates in patients undergoing TEVAR, (2) compare stroke rates in patients undergoing TEVAR for arch versus descending aneurysm pathology, and (3) identify predictive factors associated with stroke after TEVAR. METHOD The Vascular Quality Initiative (VQI) registry was queried (2015-2021) for TEVAR procedures performed for degenerative aneurysm. Our primary outcomes were any stroke or death at 30-days. Patient-, procedure-, and hospital-level predictors of stroke were assessed using multivariable logistic regression. RESULT Among 3072 patients with degenerative aneurysms (197 [6.4%] arch vs. 2875 [93.6%] descending) treated with elective TEVAR, the median age was 73 (IQR 67-79) and 54.8% were male. Within the arch aneurysm group, there were 27.4% zone 0, 22.8% zone 1, and 49.8% zone 2 interventions. Overall 30-day stroke and death rates were 3.2% and 3.8%. The distribution of stroke events was bilateral (39.0%), left carotid (15.3%), left vertebrobasilar (8.5%), right carotid (6.8%), and right vertebrobasilar (4.2%). While mortality was similar between groups, the rate of ischemic stroke was higher for patients undergoing TEVAR for arch aneurysms versus descending aneurysms (7.1% arch vs. 2.9% descending, p=0.001). Factors that were associated with ischemic stroke after TEVAR included age (RR 1.06, 95% CI 1.03-1.09), operative time (RR 1.23, 95% CI 1.12-1.34), and endovascular intervention for supra-aortic trunk revascularization (RR 2.86, 95% CI 1.16-7.09 vs. no intervention). CONCLUSION Ischemic stroke risk after TEVAR was increased for arch aneurysms compared to descending aneurysms. More proximal zone coverage and endovascular interventions on the supra-aortic trunks were associated with increased risk for stroke. Adequate preparation for stroke prevention is necessary prior to TEVAR with supra-aortic trunk revascularization. Ischemic stroke is a devastating complication of thoracic endovascular aortic repair (TEVAR). This risk may be higher in more proximal aneurysms that require arch manipulation. The purpose of this study was to (1) describe 30-day stroke and death rates in patients undergoing TEVAR, (2) compare stroke rates in patients undergoing TEVAR for arch versus descending aneurysm pathology, and (3) identify predictive factors associated with stroke after TEVAR. The Vascular Quality Initiative (VQI) registry was queried (2015-2021) for TEVAR procedures performed for degenerative aneurysm. Our primary outcomes were any stroke or death at 30-days. Patient-, procedure-, and hospital-level predictors of stroke were assessed using multivariable logistic regression. Among 3072 patients with degenerative aneurysms (197 [6.4%] arch vs. 2875 [93.6%] descending) treated with elective TEVAR, the median age was 73 (IQR 67-79) and 54.8% were male. Within the arch aneurysm group, there were 27.4% zone 0, 22.8% zone 1, and 49.8% zone 2 interventions. Overall 30-day stroke and death rates were 3.2% and 3.8%. The distribution of stroke events was bilateral (39.0%), left carotid (15.3%), left vertebrobasilar (8.5%), right carotid (6.8%), and right vertebrobasilar (4.2%). While mortality was similar between groups, the rate of ischemic stroke was higher for patients undergoing TEVAR for arch aneurysms versus descending aneurysms (7.1% arch vs. 2.9% descending, p=0.001). Factors that were associated with ischemic stroke after TEVAR included age (RR 1.06, 95% CI 1.03-1.09), operative time (RR 1.23, 95% CI 1.12-1.34), and endovascular intervention for supra-aortic trunk revascularization (RR 2.86, 95% CI 1.16-7.09 vs. no intervention). Ischemic stroke risk after TEVAR was increased for arch aneurysms compared to descending aneurysms. More proximal zone coverage and endovascular interventions on the supra-aortic trunks were associated with increased risk for stroke. Adequate preparation for stroke prevention is necessary prior to TEVAR with supra-aortic trunk revascularization.