患者被诊断出患有二尖瓣狭窄，即二尖瓣变窄。

The patient was diagnosed with mitral stenosis, a narrowing of the mitral valve.

本文分析经皮球囊二尖瓣成形术治疗风湿性二尖瓣狭窄的疗效.

Analysis of the effects by percutaneous mitral balloon valvuloplasty in rheumatic mitral stenosis.

本文分析经皮球囊二尖瓣成形术治疗风湿性二尖瓣狭窄的疗效。

Analysis of the effects by percutaneous mitral balloon valvuloplasty in rheumatic mitral stenosis .

单纯二尖瓣狭窄时二尖瓣关闭不全的存在使左房血栓形成的风险下降。

Combination of simple mitral stenosis and mitral incompetence can breakdown the risk for formation of atria sinistrum mural thrombosis.

目的：探讨经皮二尖瓣球囊扩张术（PBMV）治疗非单纯性二尖瓣狭窄（MS）的效果。

Objective: To discuss the effect of percutaneous balloon mitral valvuloplasty (PBMV) on non-simple mitral stenosis (MS).

方法：采用国产单球囊导管对4例风湿性心脏病二尖瓣狭窄患者进行PBMV。

Method: 4 cases of rheumatic mitral stenosis were treated by PBMV with single balloon catheter.

慢性风湿性心瓣膜病(二尖瓣狭窄).

This is chronic rheumatic valvulitis involving the mitral valve.