Annular dynamics of memo3D annuloplasty ring evaluated by 3D transesophageal echocardiography

作者:Nishi Hiroyuki*; Toda Koichi; Miyagawa Shigeru; Yoshikawa Yasushi; Fukushima Satsuki; Yoshioka Daisuke; Sawa Yoshiki*
来源:General Thoracic and Cardiovascular Surgery, 2018, 66(4): 214-219.
DOI:10.1007/s11748-018-0886-1

摘要

We assessed the mitral annular motion after mitral valve repair with the Sorin Memo 3DA (R) (Sorin Group Italia S.r.L., Saluggia, Italy), which is a unique complete semirigid annuloplasty ring intended to restore the systolic profile of the mitral annulus while adapting to the physiologic dynamism of the annulus, using transesophageal real-time three-dimensional echocardiography.
17 patients (12 male; mean age 60.4 +/- 14.9 years) who underwent mitral annuloplasty using the Memo 3D ring were investigated. Mitral annular motion was assessed using QLABA (R) version8 allowing for a full evaluation of the mitral annulus dynamics. The mitral annular dimensions were measured throughout the cardiac cycle using 4D MV assessment2A (R) while saddle shape was assessed through sequential measurements by RealViewA (R).
Saddle shape configuration of the mitral annulus and posterior and anterior leaflet motion could be observed during systole and diastole. The mitral annular area changed during the cardiac cycle by 5.7 +/- 1.8%.The circumference length and diameter also changed throughout the cardiac cycle. The annular height was significantly higher in mid-systole than in mid-diastole (p < 0.05).
The Memo 3D ring maintained a physiological saddle-shape configuration throughout the cardiac cycle. Real-time three-dimensional echocardiography analysis confirmed the motion and flexibility of the Memo 3D ring upon implantation.

  • 出版日期2018-4