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BOF 40
Amniocentesis ………all are true except:
1-the risk of abortion is lower than that of chorionic
villous sampling (CVS)
2-usually performed around 14-16 weeks of gestation
3-cytological examination may be used to detect
karyotyping
4-usually done blindly
5-useful in the prenatal diagnosis of congenital
adrenal hyperplasia
Answer 4
1-true…….. Abortion still may occur even in
experienced hands
2- True….when the size of the uterus is large
enough...but still it is considered to be a LATE investigation ………..CVS can
done much earlier so that intervention can be done early also
3-true….as well as many enzymes assessment
4-false ………..under ultrasound guidance
5-by finding an elevated level of 17 hydroxy
progesterone in the amniotic fluid
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