Department of Thoracic and Cardiovascular Surgery, Seoul National University Boramae Medical Center, Seoul, Korea.
Circ J. 2010 Feb;74(2):278-83. doi: 10.1253/circj.cj-09-0231. Epub 2009 Dec 15.
A recently introduced tricuspid annuloplasty ring, the MC(3) ring, has a 3-dimensional form that is designed to remodel the tricuspid valve annulus. The aim of this study was to investigate its clinical performance.
From December 2004 to April 2008, 103 patients underwent tricuspid annuloplasty using the MC(3) ring (mean age, 52+/-13 years; 63.6% women). The average preoperative tricuspid regurgitation (TR) grade was 2.5+/-0.8, and the mean preoperative systolic pulmonary artery pressure was 48.4+/-15.0 (24-88) mmHg; the mean follow-up was 26.7+/-11.2 (0-52) months. One patient died after surgery (1.0%), because of cor pulmonale. No MC(3) ring-related complications, such as, atrioventricular block, ring dehiscence or thromboembolism, were encountered. Predischarge echocardiography showed a significant decrease in the TR grade (2.5+/-0.8 to 0.8+/-0.8, respectively; P<0.001). After a median 15 months, the mean TR grade was stable (0.9+/-0.8). The mean systolic pulmonary artery pressure was also lower than its preoperative value (33.9+/-7.9 vs 48.4+/-15.0 mmHg, respectively; P<0.001).
The MC(3) ring provides good mid-term clinical and echocardiographic results for TR. However, long-term follow-up is mandatory to confirm the stability of this procedure.
一种新的三尖瓣环成形环，即 MC（3）环，具有三维形状，旨在重塑三尖瓣环。本研究旨在探讨其临床效果。
2004 年 12 月至 2008 年 4 月，103 例患者接受了 MC（3）环的三尖瓣环成形术（平均年龄 52+/-13 岁；63.6%为女性）。术前平均三尖瓣反流（TR）程度为 2.5+/-0.8，平均收缩期肺动脉压为 48.4+/-15.0（24-88）mmHg；平均随访时间为 26.7+/-11.2（0-52）个月。术后 1 例患者（1.0%）死亡，死于肺心病。未发生与 MC（3）环相关的并发症，如房室传导阻滞、环裂开或血栓栓塞。出院前超声心动图显示 TR 程度明显降低（分别为 2.5+/-0.8 至 0.8+/-0.8；P<0.001）。中位数 15 个月后，平均 TR 程度稳定（0.9+/-0.8）。收缩期肺动脉压也低于术前值（分别为 33.9+/-7.9 与 48.4+/-15.0mmHg；P<0.001）。
MC（3）环为 TR 提供了良好的中期临床和超声心动图结果。然而，需要进行长期随访以确认该手术的稳定性。
