• Rana-Armaghan Ahmad, Felix Orelaru, Xiaoting Wu, Karen M Kim, Shinichi Fukuhara, Himanshu Patel, G Michael Deeb, and Bo Yang.
• Department of Cardiac Surgery, Michigan Medicine, Ann Arbor, Mich.
• J. Thorac. Cardiovasc. Surg. 2024 Jul 1; 168 (1): 283628-36.

ObjectiveNeomedia has been frequently used for aortic root repair in acute type A aortic dissection. We aimed to determine the efficacy and necessity of neomedia during acute type A aortic dissection root repair.MethodsFrom January 2010 to February 2021, 308 patients with acute type A aortic dissection underwent aortic root repair with neomedia (n = 132) or without neomedia (n = 176). Of these, 121 matched pairs were identified using propensity score matching based on age, sex, coronary artery disease, preoperative renal failure, acute stroke, prior cardiac surgery, cardiogenic shock, coronary malperfusion, preoperative cardiopulmonary resuscitation, and severe aortic insufficiency.ResultsAfter matching, the preoperative demographics and comorbidities were well balanced in both groups. Compared with the neomedia group, the no neomedia group had less hemiarch (57% vs 69%, P = .05) and more zone 1 arch replacements (12% vs 4.1%, P = .03), shorter hypothermic circulatory arrest time (28 vs 36 minutes, P < .001), and shorter crossclamp time (120 vs 131 minutes, P = .02). Postoperative outcomes were similar, and the odds ratio by univariable logistic model of no neomedia for operative mortality was 0.83 (P = .76). Aortic root growth over 11 years (0.11 vs 0.16 mm/year, P = .66), 5-year freedom from greater than mild aortic insufficiency (84% vs 85%, P = .80), reoperation for root pathology (1 patient in each group), and 8-year survival (80% [95% confidence interval, 69-97] vs 71% [95% confidence interval, 55-82], P = .26) were similar between the neomedia and no neomedia groups.ConclusionsIn patients with acute type A aortic dissection, aortic root repair with or without neomedia was equally safe and effective. Neomedia use could be avoided in acute type A aortic dissection repair.Copyright © 2022 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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