The risks of CVS are only slightly higher than those of an amniocentesis.
Possible complications include:
Signs of complications include:
Report any signs of complications to your health care provider.
CVS was previously thought to cause limb problems in the developing baby. When CVS is performed after 9 weeks gestational age, this risk appears to be very low (6 per 10,000), and is no more frequent than in pregnancies without this testing.
If your blood is Rh negative, you may receive RhoGAM to prevent Rh incompatibility.
You will receive a follow-up ultrasound 2 to 4 days after the procedure to make sure the pregnancy is proceeding normally.
Simpson JL, Otano L. Prenatal genetic diagnosis. In: Gabbe SG, Niebyl JR, Simpson JL. Obstetrics: Normal and Problem Pregnancies. 5th ed. New York, NY: Churchill Livingstone; 2007:chap. 7.
American College of Obstetricians and Gynecologists (ACOG). Invasive prenatal testing for aneuploidy. Washington (DC): American College of Obstetricians and Gynecologists (ACOG); 2007 Dec. 9 p.
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