Does the Down syndrome screening test for elderly pregnant women have a lower pass rate?

Patient's question:

I am very scared when this happens. I often have lower abdominal pain and don't know how to solve it, so I came here to consult. Is it difficult for older mothers to pass the Down syndrome screening?

Doctor's answer:

Need to undergo 4D ultrasound, amniocentesis, and other tests at the hospital to check the fetal development.,。。,Hello, generally in the late stage of pregnancy, the lateral ventricle separation should not exceed 12MM, which is normal. The current condition can be monitored first, it is normal. Exceeding 16MM is hydrocephalus, which can affect the intellectual development of the fetus. If necessary, induction abortion can be considered.

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