Methods Percutaneous balloon dilation were adopted in totally 18 cases of valvular pulmonary stenosis and its effect was evaluated by echocardiography and angiocardiography.

• 方法肺动脉瓣狭窄患者18例,采用介入和超声多普勒评价经皮球囊肺动脉瓣成形术的疗效。