Relationship Between Residual Mitral Regurgitation and Clinical and Quality-of-Life Outcomes After Transcatheter and Medical Treatments in Heart Failure: The COAPT Trial -

Background: In the randomized COAPT trial, among 614 heart failure (HF) patients with 3+ or 4+ secondary mitral regurgitation (MR), transcatheter mitral valve repair (TMVr) with the MitraClip reduced