conclusion: it′s effective to decrease the birth of fetal chromosomal abnormality by undergoing prenatal screening and diagnose with mother serum biochemical indicator in the second trimester.
结论孕中期应用母血清生化指标进行产前筛查,结合产前诊断是减少染色体异常患儿出生的有效方法。
the detection rate of the chromosomal abnormality of the abnormal fetus detected by ultrasound (33.33%) was higer than the trisomy 21 high risk group(4.54%) and abnormal delivery group(9.09%)(p0.05).