Objective To investigate the diagnostic value of prenatal ultrasound screening for fetal diges‐tive tract malformation .Methods 20 441 pregnant women were screened by prepregnancy ultrasonogra‐phy ,and the prenatal ultrasound diagnosis w as retrospective analyzed .T he detection rate of fetal digestive tract malformation in this group w as compared ,and the detection rate of fetal digestive tract malformation in different gestational weeks was compared .Results There were 55 cases with digestive tract malforma‐tion ,and the incidence w as 0 .27% .47 cases of digestive tract malformation w ere detected by prenatal ul‐trasound diagnosis ,the coincidence rate was 85 .45%,8 cases were missed ,and the rate of missed diagno‐sis of intestinal duplication w as the highest .T here w as no significant difference in the detection rate of prenatal ultrasound screening for digestive tract malformation between different gestational weeks ( P＞0 .05).Conclusion Prenatal ultrasound screening has a higher diagnostic rate for fetal digestive tract mal‐formation ,but there are still so me missed cases .A mong them ,the rate of missed diagnosis of intestinal duplication is high .Co mprehensive diagnosis can be performed in co m bination w ith chromoso me detection if conditions permit .%目的 探讨产前超声筛查对胎儿消化道畸形的诊断价值.方法 选取20 441名接受孕前超声筛查的孕妇,回顾分析产前超声诊断情况.统计本组消化道畸形胎儿检出率,比较不同孕周胎儿消化道畸形检出率.结果 最终证实有消化道畸形胎儿55例,检出率为0 .27%.产前超声诊断检出消化道畸形47例,符合率为85 .45%,漏诊8例,肠重复畸形漏诊率最高.不同孕周胎儿产前超声筛查消化道畸形检出率比较差异无统计学意义(P＞0 .05).结论 产前超声筛查对胎儿消化道畸形的诊断率较高,但仍存在一定的漏诊情况,其中肠重复畸形漏诊率较高,条件允许情况下可结合染色体检测进行综合诊断.
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