Prediction of miscarriage and stillbirth at 11-13 weeks and the contribution of
chorionic villus sampling. Prenat Diagn 2011;31:38-45.
Chorionic villus sampling compared with amniocentesis and the difference in the rate of pregnancy loss.
Amniocentesis and
Chorionic Villus Sampling. Green-top Guideline No.
(9) Despite the decrease in HIV transmission with antiretroviral cover, procedures that require more technical skills--such as
chorionic villus sampling and cordocentesis--should still be avoided in the HIV-infected woman, as the risk of transmission to the fetus may be considerably increased.
"This would leave just 0.1% of all pregnant women needing referrals for amniocentesis or
chorionic villus sampling."
Chorionic villus sampling. Obstetrics and Gynecology Clinics of North AmericaVolume 24, Issue 1, 1 March 1997, Pages 83-110
amniocentesis and
chorionic villus sampling, would not be morally acceptable.
The ACOG guidelines also recommend that women found to have increased risk of aneuploidy based on this screening should be offered genetic counseling and the option of
chorionic villus sampling (CVS) or second-trimester amniocentesis.
Both amniocentesis and another procedure called
chorionic villus sampling, in which doctors pluck bits of the placenta, isolate fetal cells that can reveal many genetic problems in an unborn baby with near certainty.
Previously, the only way to know if a woman was having a baby with Down's was with second-trimester blood tests and/or invasive amniocentesis or
chorionic villus sampling (CVS) tests, all of which carry a slight risk of miscarriage.