经胸超声心动图在经导管封堵动脉导管未闭中的应用价值

Value of transthoracic echocardiography in transcatheter closure of patent ductus arteriosus

目的 探讨经胸超声心动图（TTE）在经导管封堵治疗动脉导管未闭（PDA）中的应用价值。方法 应用TTE观察122例PDA的位置、大小、形状，并随访经导管介入封堵后的疗效。结果 TTE测量PDA长度为（7．6±4．4）mm（0～12．0mm），直径为（5．0±2．5）mm（2．6～11．0mm），主动脉弓降部造影PDA最窄处直径为（5．8±2．7）mm（3．0～12．0mm），PDA直径超声测值与主动脉造影测值相关，差异有统计学意义（r=0．9145，P〈0．01），二者之间的差值：（0．48±0．43）mm。PDA封堵成功率100％。随访1个月～5年，未发现封堵器移位及脱落现象，未见残余分流或再通。结论 TTE对经导管介入封堵PDA的术前病例筛选和术后随访疗效具有重要意义。

Objective To explore the practical value of transthoracic echocardiography （TTE） in tanscatheter closure of patent ductus arteriosus（PDA） using Amplatzer duct occluder. Methods One hundred and twenty-two patients with PDA underwent TTE study. The location, the diameter, the length and the pattern of PDA were observed, and the therapeutic effect was assessed. Resuits The length of PDA measured by TTE was （7.6±4.4）mm（0-12.0 mm）. The diameter of PDA measured by TTE was （5. 0±2.5）mm（2.6-11.0 mm）, and by aortic angiography was （5.8±2.7）mm（3.0-12.0 mm）. These diameter measurements showed excellent correlation（r=0. 9145 ,P〈0.01）. The difference between diameters measured by the two methods was （0.48± 0.43）mm. The successful rate of occlusion was 100%. On a follow-up of 1 month to 4 years, the occluder was in position, none of them displaced and fell off, no residual shunt and PDA recanalization occured. Conclusion TTE plays an important role in selecting patients and evaluating the effeciency of PDA occlusion.