Effect of Successful Edge-to-Edge Mitral Valve Repair on Ventricular Arrhythmic Burden in Patients With Functional Mitral Regurgitation and Implantable Cardiac Devices.

Significant mitral regurgitation (MR) may be present in up to half of patients with heart failure (HF) and it is associated with adverse cardiac remodeling and myocardial stretch. These are potential triggers for ventricular arrhythmias (VA) in patients with HF, and therefore MR may enhance electrical ventricular vulnerability. Our aim was to evaluate VA burden before and after percutaneous mitral valve repair (PMVR) in patients with implantable cardiac devices.