• J. Thorac. Cardiovasc. Surg. · Mar 2022

    Randomized Controlled Trial Multicenter Study Comparative Study

    Effect of total arterial grafting in the Arterial Revascularization Trial.

    • David P Taggart, Mario F Gaudino, Stephen Gerry, Alastair Gray, Belinda Lees, Arnaldo Dimagli, John D Puskas, Vipin Zamvar, Rafał Pawlaczyk, Alistair G Royse, Marcus Flather, Umberto Benedetto, and ART investigators.
    • Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom.
    • J. Thorac. Cardiovasc. Surg. 2022 Mar 1; 163 (3): 1002-1009.e6.

    ObjectivesThe Arterial Revascularization Trial (ART) was designed to compare 10-year survival in bilateral versus single internal thoracic artery grafts. The intention-to-treat analysis has showed comparable outcomes between the 2 groups but an explanatory analysis suggested that those receiving 2 or more arterial grafts had better survival. Whether the exclusive use of arterial grafts provide further benefit is unclear.MethodsWe performed an exploratory analysis of the ART based on conduits actually received (as-treated principle). From ART cohort, only patients receiving at least 3 grafts were included. The final population consisted of 1084, 1010, and 390 patients in the single arterial graft (SAG) group, in the multiple arterial graft (MAG) group (2 or more arterial grafts with additional saphenous veins) and total arterial graft (TAG) group (3 or more arterial grafts only) respectively. Inverse probability of treatment weighting was used for comparison.ResultsWhen compared with the SAG group, there was a significant trend toward a reduction of 10-year mortality in the MAG and TAG group (test for trend P = .02). The TAG group was associated with the lowest risk of late mortality (hazard ratio, 0.68; 95% confidence interval, 0.48-0.96; P = .03) and with a significant risk reduction of the composite of death/myocardial infarction/stroke and repeat revascularization (hazard ratio, 0.71; 95% confidence interval, 0.53-0.94; P = .02).ConclusionsWhen compared with SAG, both MAG and TAG represent valuable strategies to improve clinical outcomes following coronary artery bypass grafting but TAG can potentially provide further benefit.Copyright © 2020 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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