Mitra Clip® implantation for high risk patients with severe mitral regurgitation: The Sheba experience

Background: Percutaneous edge-to-edge mitral valve repair using the MitraClip® system has evolved as a new tool in the treatment of mitral regurgitation (MR). objectives: To present our initial experience with MitraClip implantation in 20 high risk patients at Sheba Medical Center. methods: Twenty high surgical risk patients with symptomatic signifcant MR underwent MitraClip implantation. Clinical and echocardiographic parameters were recorded at baseline and at follow-up. results: The patients' mean age was 76 years and 65% were male. Coronary artery disease was present in 85% and 45% had previous bypass surgery. Renal failure was present in 65%, atrial fibrillation in 60%, and 30% had an implantable cardioverter defibrillator/cardiac resynchronization therapy device. Mean left ventricular ejection fraction was 36%. Grade III-IV MR was present in all patients with the vast majority suffering from functional MR secondary to ventricular remodeling. New York Heart Association (NYHA) class was III-IV in 90%. Patients were followed for a mean of 231 days. Acute reduction of MR grade to ≤ 2 was accomplished in 19 of the 20 patients (95%) with a 30 day mortality of 5%. At follow-up MR was reduced to ≤ 2 in 64% of patients, and NYHA class improved in 70% of patients. An additional 2 patients (11%) died during follow-up. conclusions: MitraClip implantation is feasible and safe in high risk highly symptomatic patients with significant MR. Acute and mid-term results are comparable to similar high risk patient cohorts in the literature. Continued surveillance and longer follow-up are needed to elucidate which patients are most likely to benefit from the procedure.