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目的探讨超声诊断孕中晚期胎儿缺陷(胎儿先天畸形)可能出现漏误诊的原因。方法对8 146例(其中双胎妊娠8例)孕妇的中晚期常规超声检查作回顾性分析。结果胎儿畸形79例,畸形发生率为0.969%,产前检出70例,检出率为88.6%,漏诊9例,漏诊率为11.4%.结论超声诊断是产前诊断的首选方法,但仍有一定的漏诊,对无明显形态改变的胎儿畸形存在一定的局限。与操作者技术经验、仪器条件、产前检查时间、次数及胎儿体位等因素有关,如有高危因素,可在适当的时间复查以提高产前诊断率,最大限度地减少漏诊。
Objective To investigate the possible causes of misdiagnosis of ultrasound diagnosis of fetal defects in the second trimester of pregnancy (fetal congenital malformations). Methods A retrospective analysis of 8 146 pregnant women (including twin pregnancies) in the middle and late stages of conventional ultrasound was performed. Results Fetal malformations occurred in 79 cases, the incidence of deformity was 0.969%, prenatal detection was 70 cases, the detection rate was 88.6%, missed diagnosis in 9 cases, the rate of misdiagnosis was 11.4% .Conclusion Ultrasound diagnosis is the preferred method of prenatal diagnosis, There is a certain misdiagnosis, there are some limitations on fetal deformity without obvious morphological changes. And the operator of technical experience, equipment conditions, prenatal care time, frequency and fetal position and other factors, if risk factors can be reviewed at the appropriate time to increase the rate of prenatal diagnosis, to minimize missed diagnosis.