JOURNAL ARTICLE
REVIEW

Meta-analysis of Left Subclavian Artery Coverage With and Without Revascularization in Thoracic Endovascular Aortic Repair

Shahin Hajibandeh, Shahab Hajibandeh, Stavros A Antoniou, Francesco Torella, George A Antoniou
Journal of Endovascular Therapy 2016, 23 (4): 634-41
27225214

PURPOSE: To examine the role of left subclavian artery (LSA) revascularization in thoracic endovascular aortic repair (TEVAR) with LSA coverage.

METHODS: A systematic search was conducted to identify all studies providing comparative outcomes with or without LSA revascularization for LSA occlusion during TEVAR. The search included MEDLINE, EMBASE, CINAHL, the Cochrane Central Register of Controlled Trials, the World Health Organization International Clinical Trials Registry, ClinicalTrials.gov, ISRCTN Register, and bibliographic reference lists. The primary outcome parameters were perioperative stroke, spinal cord ischemia (SCI), and mortality. Combined overall effect sizes were calculated using fixed effect or random effects models; results are reported as the odds ratio (OR) and 95% confidence interval (CI).

RESULTS: Five observational studies reporting a total of 1161 patients were identified; 444 patients underwent LSA revascularization and the remaining 717 patients did not. LSA revascularization was associated with a similar risk of stroke (OR 0.70, 95% CI 0.43 to 1.14, p=0.15), SCI (OR 0.56, 95% CI 0.28 to 1.10, p=0.09), and mortality (OR 0.87, 95% CI 0.55 to 1.39, p=0.56) compared with no LSA revascularization.

CONCLUSION: LSA revascularization was not found to significantly reduce neurologic complications or mortality in patients undergoing TEVAR with coverage of the LSA origin. Randomized clinical trials are required to elucidate the role of routine or selective LSA revascularization in these cases.

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