Stage-based approach to predict left ventricular reverse remodeling after mitral repair.

Area of Science:

• Cardiovascular Surgery
• Cardiac Surgery Outcomes
• Heart Valve Repair

Background:

• Predicting reverse left ventricular (LV) remodeling post-mitral valve repair is vital for perioperative decisions.
• Limited randomized, prospective data exist for validating predictor variables.

Purpose of the Study:

• To identify independent predictors of reverse LV remodeling after mitral valve repair.
• To evaluate the impact of mitral repair technique on LV remodeling.

Main Methods:

• The CAMRA CardioLink-2 randomized trial included 104 patients.
• Assessed indexed LV end-systolic volume (LVESVI), indexed LV end-diastolic volume (LVEDVI), and LV ejection fraction (LVEF) preoperatively and postoperatively.
• Used univariate and multivariate analyses to determine predictors of reverse remodeling at discharge and 12 months.

Main Results:

• Preoperative LVESVI and LVEDVI, and preoperative LVESVI's association with LVEF predicted remodeling at discharge.
• Mitral ring size positively influenced LVESVI and LVEF changes from predischarge to 12 months.
• Higher postoperative mitral valve gradient was associated with adverse changes in LVESVI and LVEDVI.

Conclusions:

• Mitral repair technique did not significantly impact reverse remodeling.
• Surgery before significant LV dilation or dysfunction may enhance remodeling.
• Improved postoperative mitral valve hemodynamic performance may promote better remodeling capacity.