FUNCTIONAL MITRAL REGURGITATION WITHOUT SIGNIFICANT MITRAL VALVE TETHERING: A THREE-DIMENSIONAL TRANSESOPHAGEAL ECHOCARDIOGRAPHY STUDY

Functional mitral regurgitation (FMR) is considered to occur due to mitral valve (MV) tethering. However, patients with FMR without significant MV tethering were encountered in clinical setting. We sought to assess FMR without MV tethering using 3-dimensional transesophageal echocardiography (3D TEE