So population screening and prenatal diagnosis are very important measures.
所以，人群筛选和产前诊断是很重要的措施。
Even if the screening result is positive, you will not necessarily be offered a prenatal diagnosis.
即使检查结果是积极的，你不一定会提供了产前诊断。
Conclusion fetal echocardiography showed high sensitivity and accuracy in the diagnosis of congenital heart diseases, and is of great value in prenatal screening of fetal congenital diseases.
结论超声心动图诊断胎儿心脏畸形具有很高的敏感性及准确性，在胎儿产前畸形筛查中有重要的应用价值。
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