Meta-Analysis of the Usefulness of Mitraclip in Patients With Functional Mitral Regurgitation

In this manuscript the authors describe their finding after a systematic review and meta-analysis to explore the safety and efficacy of the Mitraclip procedure for patients with functional mitral regurgitation (FMR). Overall, 875 patients were included. Every patient underwent a follow-up of at least 6 months. The primary safety end point was a composite of all-cause death, rehospitalization for heart failure, and reinterventions during follow-up. The primary efficacy end point was the change in 6-minute walk test (6MWT). Secondary efficacy end points were change in left ventricle ejection fraction (EF), left ventricle volumes, pulmonary arterial pressure, and left atrial volumes, whereas the secondary safety end points were the single components of the primary composite one, cardiac death, and acute kidney injury during index hospitalization. The main findings were a net improvement in 6MWT, in NYHA functional class, and in reverse remodeling; a negative impact of AF diagnosis on positive effect in terms of remodeling; and low rates of procedural cardiac deaths. The authors conclude that Mitraclip is an effective treatment strategy for patients with heart failure and significant mitral regurgitation.