Differences in Characteristics, Left Atrial Reverse Remodeling, and Functional Outcomes after Mitral Valve Replacement in Patients with Low-Gradient Very Severe Mitral Stenosis

摘要

Background: The discrepancy between planimetered mitral valve area (MVA) and mean diastolic pressure gradient (MDPG) has not been studied extensively in patients with mitral stenosis. The purpose of the present study was to investigate differences in characteristics and outcomes after mitral valve replacement (MVR) between low-and high-MDPG groups in patients with very severe mitral stenosis (VSMS). The hypothesis was that the low-MDPG group would have different characteristics and would be associated with poor clinical outcomes after MVR.