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).
为献血者和接受者准备的管型材料装置是用直径为3 min和壁厚为0.5mm的内腔压制成的。
The tubing for both donor and recipient sets was extruded with a lumen 3 min. in diameter and a wall 0.5 mm. thick.
后来他接受了冠状动脉腔内成形术。
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