Background

Although it is known that mitral regurgitation improves after surgical aortic valve replacement (AVR) for aortic stenosis, nowadays, few and contradictory information are available about changes in mitral regurgitation (MR) severity after transcatheter aortic valve implantation (TAVI).

Methods

Thirty-six patients (pts) with MR ≥2+/4+ without severe mitral stenosis who underwent TAVI (26 Edward Sapien Valve, 10 CoreValve) were consecutively enrolled. All pts underwent transthoracic echocardiography within 7 days before TAVI and 3 months after the procedure. MR was graded as none (0+/4+), trivial (1+/4+), mild (2+/4+), moderate (3+/4+), and severe (4+/4+) according with current EAE and ASE recommendations. Predefined parameters studied for MR evaluation were effective regurgitant orifice area (EROA) and MR index. Before TAVI, MR was classified as organic or functional according to valve morphology and left ventricular function.

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