目的 分析产前超声筛查对妊娠中期胎儿复杂性心脏畸形的诊断价值，为临床提供更安全有效的检查方法。方法 选 取2015年2月-2016年12月在我院进行产前超声筛查的妊娠中期孕妇2800例，回顾性分析上述孕妇的超声检查资料。 观察并比较产前超声与产后随访胎儿复杂性心脏畸形的结果。结果 2800例孕妇中，经临床胎儿出生后或引产后证 实，胎儿复杂性心脏畸形共30例，产前超声筛查的胎儿复杂性心脏畸形检出率与产后随访比较，差异没有统计学意 义(P＞0.05)。结论 对于妊娠中期胎儿来说，进行产前超声筛查，可提高复杂性心脏畸形的检出率，在临床上具有 一定的诊断价值。

Objective To investigate the diagnostic value of obstetric ultrasound examination on fetal complex cardiac abnormalities during mid-term pregnancy and provide safe and effective inspection methods. Methods 2800 pregnant women in their second trimester given obstetric ultrasound examination in our hospital from February 2015 to December 2016 were selected and retrospectively analyzed. Observe and compare the results of complex cardiac abnormalities before obstetric ultrasound examination and postpartum follow-up. Results After confirmation, there were 30 cases with fetal complex cardiac abnormalities from 2800 pregnant women, relevance ratio of fetal complex cardiac abnormalities before obstetric ultrasound examination and postpartum follow-up had no statistic significance (P>0.05). Conclusion For fetuses in the second trimester pregnancy, the application of obstetric ultrasound examination can improve relevance ratio of fetal complex cardiac abnormalities and has certain diagnostic value in clinic.