9.For 1 case of Lutembacher syndrome, mitral valve area increased from 1.0 to 2.1 cm2.Durring 1 week to 6 months follow up,no residual shut and dislocation of the devices were found by TTE.

• 1例Lutembacher综合征患者；超声心动图测量二尖瓣瓣口面积分别由二尖瓣球囊扩张术前1.；0cm2增加到术后2