Mitral Regurgitation Treatment in Advanced Heart Failure
MITRADVANCE-HF is a prospective, randomized, parallel-controlled, open-label, multicentre study trial enrolling patients with SMR and advanced HF on maximally tolerated standard of care therapies for HF according to the most recent guidelines. Enrolled patients will be randomly assigned, in a 1:1 ratio, to a device arm consisting of MitraClip therapy added to optimal medical therapy (OMT) or a control arm of OMT alone. Approximately 20 Italian high-volume centres will be involved. Enrolment duration will be of 24 months. Follow-up visit will be performed at 3, 6, and 12 months. Primary end-point was the absolute change in overall KCCQ summary score (KCCQ-OS) from baseline to 3 months follow-up.
• Age between 18 and 90 years
• Significant secondary mitral regurgitation (effective regurgitant orifice area ≥ 5 30mm2) confirmed at the end of the screening period
• Optimal medical therapy (OMT) according to recent guidelines.
• Advanced heart failure defined as the presence of all the following criteria, despite OMT:
‣ Severe and persistent symptoms of HF (NYHA class III or IV)
⁃ Severe cardiac dysfunction defined by a reduced left ventricular ejection fraction (LVEF) ≤35% and/or high BNP or NTproBNP levels (BNP\>125 pg/ml or NTproBNP\>400 pg/ml if sinus rhythm; BNP\>375 pg/ml or NTproBNP\>1200 pg/ml if atrial fibrillation)
⁃ Impairment of quality of life (KCCQ \< 75 points) AND severe impairment of exercise capacity with inability to exercise or low 6MWT distance (\<450 meters) or pVO2 (\<14 mL/kg/min or \<50% of predicted) OR at least 1 unplanned visit or hospitalization in the last 12 months, due to HF, and requiring intravenous diuretics and/or inotropes.