目的分析胎儿超声心动图的四腔心切面联合降主动脉逆行跟踪法产前诊断胎儿先天性心脏病(先心病)的价值。方法 60例怀疑胎儿为先心病的晚孕孕妇,随机分为常规组和综合诊断治疗组,每组30例。常规组孕妇采用常规方法对胎儿进行诊断,综合诊断治疗组孕妇采用四腔心切面联合降主动脉逆行跟踪法进行诊断。比较两组的诊断效果。结果综合诊断治疗组诊断准确率为96.7%,敏感性为89.6%,特异性为94.7%;常规组诊断准确率为76.7%,敏感性为72.6%,特异性为75.3%,综合诊断治疗组诊断准确率、敏感性、特异性均高于常规组,差异均具有统计学意义(P<0.05)。结论四腔心切面联合降主动脉逆行跟踪法产前诊断胎儿先心病的诊断效果显著,准确率较高,敏感性及特异性高,值得临床推广及使用。 Objective To analyze the value of prenatal diagnosis of fetal congenital heart disease (CHD) by four-chamber echocardiography combined with retrograde descending aorta tracking. Methods Sixty pregnant women with suspected fetal congenital heart disease were randomly divided into routine group and comprehensive diagnosis and treatment group, 30 cases in each group. The conventional group of pregnant women used routine methods to diagnose the fetus. The pregnant women in the comprehensive diagnosis and treatment group were diagnosed by retrograde tracing of four-chamber coring combined with descending aorta. The diagnostic results of the two groups were compared. Results The diagnostic accuracy rate of the comprehensive diagnosis and treatment group was 96.7%, the sensitivity was 89.6% and the specificity was 94.7%. The diagnostic accuracy of the conventional group was 76.7%, the sensitivity was 72.6% and the specificity was 75.3% The accuracy, sensitivity and specificity were higher than those in the conventional group, with statistical significance (P <0.05). Conclusions The diagnostic accuracy of prenatal diagnosis of fetal CHD with four-chamber heart-cut combined with retrograde aortic retrograde tracking is high, with high accuracy, high sensitivity and specificity and worthy of clinical promotion and use.