• Ann. Thorac. Surg. · Mar 2021

    Very Long-term Outcome of Minimally Invasive Direct Coronary Artery Bypass.

    • Giorgio Mastroiacovo, Sabrina Manganiello, Sergio Pirola, Calogero Tedesco, Laura Cavallotti, Carlo Antona, Francesco Alamanni, and Giulio Pompilio.
    • Department of Cardiovascular Surgery, Monzino Cardiology Center Scientific Institute for Research, Hospitalization, and Healthcare (IRCCS), Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy. Electronic address: giorgio.mastroiacovo@unimi.it.
    • Ann. Thorac. Surg. 2021 Mar 1; 111 (3): 845-852.

    BackgroundMinimally invasive direct coronary artery bypass (MIDCAB) is a well-established, low-impact surgical procedure for revascularization of the left descending coronary artery with the left internal mammary artery. This study aimed to evaluate safety, overall survival, and freedom from major adverse cardiocerebral-related events (MACCE) after 20 years of MIDCAB.MethodsThis study retrospectively collected a series of 141 patients who underwent MIDCAB between 1997 and 2017, to assess long-term outcome. A total of 133 patients who underwent revascularization of the left descending coronary artery with the left mammary artery through a full median sternotomy were analyzed.ResultsActuarial survival rates on a Kaplan-Meier curve were 100%, 95%, 90%, 83%, and 70% at 1, 5, 10, 15, and 20 years, respectively. Freedom from MACCE, defined as myocardial infarction, stroke, and cardiac death, was 97%, 90%, 79%, 75%, and 61% at 1,5,10,15, and 20 years, respectively. At Cox multivariable analysis, age, cancer, and chronic renal insufficiency were found to be independent predictors affecting long-term survival, with a hazard ratio of 1.12 (P = .007), 17.63 (P < .001), and 5.16 (P = .03), respectively. The MIDCAB group showed a significantly shorter hospital length of stay and significantly lower rates of blood transfusions, cardiac-related events, and all-cause events compared with the full sternotomy group (P = .02 and P = .001, respectively).ConclusionsThe very long-term clinical outcome of MIDCAB is satisfactory in terms of survival and freedom from MACCE. MIDCAB significantly reduces hospital length of stay and blood transfusions when compared with full sternotomy bypass surgery on the left descending coronary artery and appears to improve prognosis in terms of cardiac-related events and all-cause events effectively.Copyright © 2021 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

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