922-57 Three-dimensional Analysis of Mitral Annular Configuration and Dynamics in Patients with an Annuloplasty Ring by Omniplane Transesophageal Echocardiography: Comparison Between Flexible and Rigid Annuloplasty Rings

A Mitral annuloplasty ring has been used in mitral valve repair. However, three-dimensional (3-D) analysis of mitral annular configuration and dynamics in patients with an annuloplasty ring has not been reported. Introduction of multiplane transesophageal echocardiography (M-TEE) provides 3-D reconstruction of the mitral annulus from multiple cross-sectional views from a stable transducer position by rotating around a central axis. Therefore, we evaluated the effect of the annuloplasty ring on mitral annular configuration and dynamics by using M-TEE 3-D reconstruction. Six patients with a flexible Duran ring and 6 with a rigid Carpentier ring who underwent mitral valve repair for mitral regurgitation were examined by M-TEE.ResultsIn patients with a flexible Duran ring, the annulus had a nonplanar configuration and the annular area changed during the cardiac cycle. The percentage reduction in the annular area in these patients was 24±5%. In patients with a rigid Carpentier ring, however, the annulus had planar configuration and the annular area did not change during the cardiac cycle.Conclusion3-D reconstruction of the mitral annulus by M-TEE revealed that mitral annular configuration and dynamics are physiological in patients with a flexible Duran ring compared with a rigid Carpentier ring