本文研究26例≥70岁(72±2岁)的二尖瓣狭窄(MS)患者(研究组)行二尖瓣分离术(BMC)治疗的早期和远期疗效,并与同期252例<70岁(50±11岁)的MS患者(对照组)进行比较。研究组心功能Ⅲ或Ⅳ级(NYHA分级)22例(84％)、对照组169例(67％)(P<0.007);研究组房颤16例(61％)、对 This study investigated the early and long-term efficacy of mitral valve dissection (BMC) in 26 patients aged 70 years (72 ± 2 years) with mitral stenosis (MS), and compared with 252 (50 ± 11 years) MS patients (control group) were compared. Twenty-two patients (84%) had cardiac function grade III or IV (NYHA class) in the study group and 169 patients (67%) in the control group (P <0.007)