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Few reports have focused on which patients with moderate ischemic mitral regurgitation (IMR) were not good candidates for coronary artery bypass grafting (CABG) alone. This single-center study aimed to assess risk factors for moderate or more residual regurgitation within two years after CABG alone for the treatment of moderate chronic IMR to optimize the operation strategy and prognosis.A total of 189 eligible patients were entered into a failure group (n = 108) or an improved group (n = 81) according to whether moderate or more residual regurgitation occurred within two years after surgery. Baseline and surgical characteristics were analyzed, and clinical outcomes were compared between groups.Prior myocardial infarction (MI)/chronic myocardial ischemia and region wall motion abnormality (anterior/inferior-posterior wall) were two independent risk factors for moderate or more residual regurgitation, following CABG alone, for the treatment of moderate chronic IMR (OR = 3.15, 95% CI 1.66-5.75, and OR = 2.45, 95% CI 1.36-4.84, respectively). During a median follow-up of 40 months, compared with the improved group, the failure group was more likely to present with New York Heart Association (NYHA) class III-IV and cardiac re-hospitalization (57.4% versus 11.1%, P &lt; 0.001, and 13.9% versus 4.9%, P = 0.043, respectively) and had worse cumulative survival (χ 2 = 4.259, log-rank P = 0.039).Patients suffering from moderate chronic IMR secondary to prior MI (rather than chronic ischemia) with anterior wall motion abnormalities (rather than inferior-posterior wall motion abnormalities) may not be good candidates for CABG alone, and may have a poor prognosis after CABG alone.

international heart journal

Risk Factors for Moderate or More Residual Regurgitation in Patients with Moderate Chronic Ischemic Mitral Regurgitation Undergoing Surgical Revascularization Alone