方法：男性4例，女性2例，年龄8 ~ 19岁，平均11.7岁，均行经皮肺动脉瓣球囊成形术治疗。
Methods: There were 4 male and 2 female patients, with mean age of 11.7 years (ranging from 8 to 19 years).
目的探求一种简便，无创的方法评价行经皮二尖瓣球囊成形术(PBMV)病人的肺动脉压水平。
Objective to find a simple and noninvasive method for estimating pulmonary artery systolic pressure (PASP) in patients underwent percutaneous balloon mitral valvuloplasty (PBMV).
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