目的：探讨唐氏筛查及产前诊断在预防和减少染色体病及先天缺陷儿出生的实用价值。
Objective: To explore the practical value of Down's screening and antenatal diagnosis in preventing and decreasing chromosomal disease and congenital birth defect.
目的探讨超声诊断胎儿出生缺陷(胎儿先天畸形)可能出现的漏误诊原因。
Objective To study the possible cause in misdiagnosis and missed diagnosis of fetal birth defect (congenital fetal malformation) detected by ultrasound.
宫内诊断即产前诊断，是指在胎儿出生前，通过各种手段对胎儿进行先天性缺陷或遗传性疾病的诊断。
Fetal in utero diagnosis, that is, prenatal diagnosis, means diagnosis of those abnormal babies with congenital defect or inheritance disease before their delivery.
结果出生缺陷发生首位是先心病，产前诊断水平低是发生出生缺陷的主要原因。
Results: Most of birth defects are Congenital heart defect (Chas), the main reason is lower diagnoses level before childbearing.
结论出生缺陷的产前筛查结合产前诊断对降低出生缺陷的出生率有重要意义。
Conclusion: Combination of prenatal screening and diagnosis for birth defects is important to reduce the birth rate of birth defects.
结论出生缺陷的产前筛查结合产前诊断对降低出生缺陷的出生率有重要意义。
Conclusion: Combination of prenatal screening and diagnosis for birth defects is important to reduce the birth rate of birth defects.
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