Conclusion The late efficacy of mitralannuloplasty using prosthetic ring is satisfactory.
结论对于有瓣环扩大的二尖瓣成形术，应用人工瓣环，近期和远期临床效果均满意。
2
Aim: To assess the effect of the totally flexible prosthetic ring in mitral and tricuspid annuloplasty.
目的：评价全软成形环在二尖瓣关闭不全瓣环成形术中的作用。
3
Purpose: To find the predictive factors of low cardiac output after mitral and aortic valve operation combined with tricuspid annuloplasty of tricuspid valve lesion.