Specific Aim 2: This study will define the effect of therapy on mechanism and severity of functional MR. Null Hypothesis: There will be no difference in measurements of the mechanism and severity of moderate functional MR before and after treatment in the three treatment groups (medicine, CABG, and CABG plus SVR). To test this hypothesis, this study will compare the change in measurements of MR mechanism (see above list) and severity (EROA and volume of the chest wall [VCW]) before and at a 2-year follow-up in the three treatment groups. The primary endpoint for this analysis will be long-term survival.