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目的 探讨超声心动图在 Amplatzer封堵器治疗动脉导管未闭中的应用价值。方法 封堵术前超声心动图测量 PDA直径、内径、肺动脉内径、左房、左室大小及收缩功能等指标。术中全程指导监测封堵器位置是否正常 ,有无残余分流。术后 3个月复查封堵器有无移位或脱落。结果 超声监测 PDA共 15例 ,均为管型 ,PDA直径 5～ 12 mm,平均 7.0 mm,Vmax=4 .5 m / s,近主动脉弓降部造影 PDA最窄处直径 6～ 13mm,平均 6 .8mm ,二者无显著差异 (P>0 .0 5 ) ,术后 3个月 CDFI示 :大血管水平无残余分流 ,左室腔及左房、肺动脉平均内径均明显减小。结论 超声心动图检查对 PDA的大小判断 ,对封堵适应征及术中指导监测术后复检封堵器位置 ,血流动力学评价有非常重要的价值。
Objective To investigate the value of echocardiography in the treatment of patent ductus arteriosus with Amplatzer occluder. Methods Preoperative echocardiography was performed to measure the PDA diameter, internal diameter, pulmonary artery diameter, left atrium, left ventricular size and systolic function. Intraoperative guidance to monitor occluder position is normal, with or without residual shunt. 3 months after occlusion device to check whether the shift or fall off. Results A total of 15 cases of PDA were examined by PDA. The diameter of PDA was 5-12 mm with an average of 7.0 mm and the Vmax was 4.5 m / s. The narrowest diameter of the proximal PDA was 6-13 mm with an average of 6. There was no significant difference between the two groups (P> 0.05). The CDFI at 3 months after operation showed no residual shunt at the macrovascular level and the average internal diameter of left ventricle, left atrium and pulmonary artery were significantly decreased. Conclusions Echocardiography is of great value in judging the size of PDA. It is of great value in assessing the indications of occlusion and intraoperative guidance and monitoring of postoperative occlusion device position and hemodynamic evaluation.