Objective:To observe whether percutaneous transluminal ballonmitral valvuloplasty (PTBMV) can improve the pulmonary function of patients with single mitral stenosis (MS).
目的：观察单纯二尖瓣狭窄（MS）患者接受经皮腔内球囊二尖瓣成形术（PTBMV）治疗前后的肺功能指标的变化。
Objective:To observe whether percutaneous transluminal ballonmitral valvuloplasty (PTBMV) can improve the pulmonary function of patients with single mitral stenosis (MS).
目的：观察单纯二尖瓣狭窄（MS）患者接受经皮腔内球囊二尖瓣成形术（PTBMV）治疗前后的肺功能指标的变化。
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