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- W2413331208 abstract "BACKGROUND AND AIM OF THE STUDY Percutaneous catheter-based mitral annuloplasty (PTMA) exploits the anatomic proximity of the coronary sinus (CS) to the mitral valve apparatus. Acute results of PTMA have been favorable, but the durability of the geometric alterations associated with PTMA has not been reported. The study aim was to assess the three-dimensional (3D) geometry of the mitral annulus (MA) in normal sheep at 20 weeks after PTMA implantation. METHODS A PTMA device was implanted percutaneously in the CS of 10 normal sheep without mitral regurgitation. All animals were followed for 20 weeks with real-time 3D echocardiography (RT3DE). The MA area, the diagonal diameters in four directions, and the angle alpha, representing the degree of the saddle shape of MA, were determined. RESULTS No significant hemodynamic, pathologic or mechanical complications were observed during implantation or follow up. Both, the MA area (from 4.8 +/- 0.9 cm2 to 3.7 +/- 0.9 cm2) and anterior-posterior (A-P) diameter (from 21.4 +/- 3.0 mm to 17.6 +/- 2.4 mm) were reduced immediately after the procedure (both p <0.05). The angle alpha decreased after the procedure (from 142.0 +/- 11.5 degrees to 128.3 +/- 15.6 degrees; p <0.05). These changes remained stable over the 20-week follow up period. CONCLUSION RT3DE demonstrates that PTMA reduces the MA area and A-P diameter and maintains the physiologic curved or saddle shape of the MA. These changes remained stable for 20 weeks after device implantation." @default.
- W2413331208 created "2016-06-24" @default.
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- W2413331208 date "2008-05-01" @default.
- W2413331208 modified "2023-09-24" @default.
- W2413331208 title "Maintenance of geometric alterations associated with percutaneous mitral valve repair: real-time three-dimensional echocardiographic assessment in an ovine model." @default.
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