• J. Thorac. Cardiovasc. Surg. · May 2020

    Randomized Controlled Trial

    Single-dose cardioplegia protects myocardium as well as traditional repetitive dosing: A noninferiority randomized study.

    • Alessandro Vivacqua, John Robinson, Amr E Abbas, Jeffrey M Altshuler, Francis L Shannon, Robert H Podolsky, and Marc P Sakwa.
    • Department of Cardiovascular Surgery, Beaumont Hospital, Royal Oak, Mich. Electronic address: Alessandro.Vivacqua@beaumont.edu.
    • J. Thorac. Cardiovasc. Surg. 2020 May 1; 159 (5): 1857-1863.e1.

    ObjectiveThe present prospective noninferiority randomized trial was designed to demonstrate the safety and efficacy of a single dose of Custodiol histidine-tryptophan-ketoglutarate compared with repetitive cold-blood cardioplegia.MethodsFrom October 2012 to May 2014, 110 patients were randomly assigned to 1 of 2 groups: Group 1 (55 patients) received repetitive cold-blood cardioplegia, and group 2 (55 patients) received single-dose Custodiol histidine-tryptophan-ketoglutarate. Isolated aortic valve replacement, isolated mitral valve replacement, and multivalve procedures represented the most frequent operations, with 39 cases (71%) in group 1 and 49 cases (89%) in group 2. There was no difference in cardiopulmonary bypass time (102 ± 26 minutes vs 99 ± 19 minutes, P = .70) or aortic crossclamp time (77 ± 19 minutes vs 74 ± 17 minutes, P = .33). All patients underwent preoperative electrocardiogram and determination of creatine kinase-MB, troponin I, left ventricular ejection fraction, and regional wall motion. Postoperative cardiac biomarkers were checked at 7, 24, and 48 hours, and an echocardiogram was obtained to check for left ventricular function abnormalities.ResultsThere was no difference in cardiac biomarkers release between the 2 groups at baseline and 7, 24, and 48 hours postoperatively (creatine kinase, P = .18, troponin P = .23). Left ventricular function was similar between groups preoperatively and at 24 hours after surgery. No death or myocardial infarction was observed in either group. There were no differences in intensive care unit length of stay, incidence of atrial fibrillation, use of inotropes or vasopressors support, time of intubation, or creatinine levels.ConclusionsA single dose of Custodiol histidine-tryptophan-ketoglutarate cardioplegia is not inferior to repeated cold-blood cardioplegia during elective cardiac surgery.Copyright © 2019 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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