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In patients with moderate ischemic mitral regurgitation who were scheduled to undergo bypass surgery, repairing the mitral valve during coronary artery bypass grafting (CABG) had some benefits, the randomized RIME trial showed.

A year after the operation, peak oxygen consumption during exercise had improved by a relative 22% in the patients who received mitral valve repair and by 5% in those who underwent CABG only (P<0.001), according to K.M. John Chan, BMBS, of Imperial College London, and colleagues.

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