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目的通过临床病例探究超声心动图对晚孕期胎儿动脉导管(DA)早闭及狭窄的诊断及影像特征。方法选取经产后确诊的8例DA早闭及狭窄的胎儿超声心动图资料进行回顾性分析。结果 7例胎儿超声心动图未显示DA及血流信号,1例DA狭窄,同时均表现为右心室压力负荷过重,三尖瓣均有轻中度以上反流。患儿在出生后24h内复查超声心动图结果:7例患儿未探及DA及血流信号,1例仍残留DA,所有患儿右心室压力均有好转。3个月后再次进行超声心动图复查结果:残留DA消失,所有患儿心脏结构及功能均恢复正常。结论结合三尖瓣反流及右心室压力负荷过重的超声心动图表现对及早发现胎儿DA早闭及狭窄具有重要的参考价值。
Objective To investigate the diagnostic and imaging features of early closure and stenosis of fetal ductus arteriosus (DA) in the second trimester through clinical echocardiography. Methods The data of 8 cases of premature ejaculation and stenosis fetus echocardiography confirmed after delivery were retrospectively analyzed. Results Seven cases of fetal echocardiography did not show DA and blood flow signals, one case of DA stenosis, at the same time showed right ventricular pressure overload, tricuspid regurgitation are mild to moderate. The results of echocardiography were reviewed within 24 hours after birth in children: DA and blood flow signals were not detected in 7 cases, DA remained in 1 case, and right ventricular pressure in all children improved. 3 months after the echocardiographic review results again: residual DA disappeared, all children with normal cardiac structure and function returned to normal. Conclusion The combination of tricuspid regurgitation and right ventricular pressure overload echocardiographic performance of early detection of fetal DA early closure and stenosis have important reference value.