THE RISK FACTORS OF MITRAL INSUFFICIENCY RECURRENCE\nAFTER CORONARY ARTERY BYPASS GRAFTING WITH OR WITHOUT\nMITRAL VALVE REPAIR IN PATIENTS WITH ISCHEMIC CARDIOMYOPATHY

Abstract

Background and Objective: This study aimed to identify risk factors for mitral\ninsufϐiciency (MI) recurrence after isolated coronary artery bypass grafting\n(CABG) and for CABG with mitral valve (MV) repair of moderate MI in patients\nwith ischemic cardiomyopathy. Methodology: This is a single-centre prospective\nstudy. We included 76 patients with moderate MI and poor left ventricular function\n(EF <35%). The patients underwent isolated CABG or CABG with MV repair. The\nage of the patients was 57±8 years, and 90% were men. MV repair was restricting\nannuloplasty using a rigid ring with a size of 26–30.\nResults: The total complications in the long-term period were 19 (52.7%) and\n8 (23.5%) in the isolated CABG and CABG + MV repair groups, respectively\n(p=0.015). After isolated CABG in patients suffering ischemic cardiomyopathy (IC)\nand moderate MI, progression of MI (grade 3) initially 0%, after 12 months, 31%,\nafter 36 months, 71%, p <0.001 is observed.\nConclusions: Isolated CABG or CABG with MV repair in patients with IC does not result\nin a signiϐicant decrease in MI in the long-term, when compared with the baseline. The\nrevealing of the predictors of the progression of MI made it possible to determine the\nthreshold values of the performance indicators of MV repair and assisted with the\ndetermination of the surgical treatment strategies for patients with moderate MI.\nKey words: Ischemic cardiomyopathy, mitral insufϐiciency, coronary artery bypass\ngrafting