What are the risks and benefits of chorionic villus sampling?
The risks of CVS include the following: • miscarriage CVS has a similar or slightly higher rate of pregnancy loss compared to amniocentesis. Consult your physician for information about loss rates. • infection CVS is an invasive procedure and may cause infection. • limb defects Some reports show that babies born after CVS may have an increased rate of limb (arm, leg, or finger) defects. Other studies have not shown an increase, except when CVS is performed before 10 weeks of pregnancy. The benefits of CVS include the following: • early diagnosis of a chromosomal abnormality • early diagnosis of certain genetic defects Be sure to discuss the risks and benefits of CVS more specifically with your physician.