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目的 :评价经胸超声心动图 (TTE)在术前测量房间隔缺损 (ASD)大小、术中监测与指导儿童ASD封堵的作用。方法 :10例ASD儿童采用TTE多个切面综合判断ASD大小、周缘情况及房间隔伸展径。比较ASD之TTE测值与封堵成功所选用的封堵器大小之间的关系。在封堵术中TTE监测封堵过程、伞释出后牢固程度及彩色多普勒有无分流。结果 :ASD的TTE测值为 8～ 2 4 (15 .8± 5 .9)mm ,封堵器型号为 8～ 2 8(18.8±6 .0 )mm ,TTE测量的ASD大小与封堵器大小相关良好 ,直线方程Y =4 .36 0 +0 .914X ,相关系数r =0 .90 5(P <0 .0 1)。硬缘ASD的封堵器选择比TTE所测ASD大 1～ 5mm ;封堵器型号的选择多在球囊测值的基础上加 0～ 2mm。所有封堵器牢固 ,无脱落。结论 :TTE封堵术前检查和术中指导ASD封堵器的放置是一种可行、有效、简便的方法
Objective: To evaluate transthoracic echocardiography (TTE) before surgery to measure the size of atrial septal defect (ASD), to monitor and guide the ASD occlusion in children during operation. Methods: Ten cases of ASD children were examined by multiple sections of TTE. The ASD size, peripheral circumstance and atrial septal diameter were evaluated. The relationship between TTE measurements of ASD and the size of the occluder selected for successful closure was compared. During closure, TTE monitors the occlusion procedure, the firmness of the release of the umbrella, and the presence or absence of color Doppler flow. Results: The TTE of ASD was 8 ~ 24 (15.8 ± 5.9) mm and the occluder type was 8 ~ 28 (18.8 ± 6. The size was well correlated with a linear equation of Y = 4.36 0 +0.914X with a correlation coefficient of r = 0.905 (P <0 .01). Hard ASD occluder selection than TTE measured ASD 1 ~ 5mm; occluder models more choice on the basis of the balloon measured plus 0 ~ 2mm. All occluders are strong and have no shedding. Conclusion: Preoperative TTE closure and intraoperative guidance of ASD occluder placement is a feasible, effective and simple method