At a glance
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Surgical Interventions for Moderate Ischemic Mitral Regurgitation
In Brief
A clinical study evaluating Mitral Valve Repair and CABG for Mitral Valve Insufficiency and Coronary Artery Disease. Completed, enrolled 301 participants across 27 sites in 3 countries.
Detailed Summary
Coronary artery bypass grafting (CABG) is a procedure that people with coronary artery disease (CAD) may undergo to increase blood flow to the heart. During a CABG procedure, people who have a leak in one of the valves in the heart-the mitral valve-may at the same time undergo a procedure that repairs the valve. This study will evaluate whether people with moderate mitral valve leakage would be better off undergoing CABG plus the mitral valve repair procedure or undergoing CABG alone.
Study Details
Timeline
Interventions
Surgical techniques for mitral valve repair may need to be adjusted at the discretion of the surgeon, as based on intra-operative findings that may not be previously recognized in the pre-operative evaluation. The common elements for mitral annuloplasty planned as part of this study include the following: 1. All procedures will be performed with cardiopulmonary bypass (CPB) and with moderate hypothermia. Cannulation will be central with aortic cannulation for arterial inflow from the cardiopulmonary bypass circuit. Right atrial or bicaval (inferior and superior vena cava) drainage cannulas will be employed. 2. The heart will be arrested with cardioplegia. 3. A complete annular ring shall be placed unless specifically contraindicated by intra-operative findings. Additional repair of the mitral apparatus itself will be based on intra-operative findings.
CABG will be performed using standard surgical techniques. Conduit selection and harvesting methods will not be prescribed, except that utilization of the left internal mammary artery (LIMA) is recommended when a left anterior descending (LAD) graft is indicated. The technical details of bypass grafting will not be prescribed. Complete revascularization will be performed, within the judgment of the surgical investigator.