Objective: To evaluate the effect of preservation of the entire mitral subvalvular apparatus during doublevalve replacement on left ventricular functions.
目的：评价保留二尖瓣全瓣下结构对双瓣替换者术后左心功能的影响。
2
Objective To evaluate the effects of various myocardial protections on the rate of myocardial oxygen uptake in patients undergoing mitral and aortic valve replacement (double valve replacement, DVR).
目的了解不同心肌保护方式对二尖瓣和主动脉瓣双瓣膜置换手术心肌氧摄取率的影响。
3
Objective: To evaluate the clinical effect of the double-orifice technique in the treatment of the anterior leaflet prolapse of mitralvalve.