Chorionic villus sampling (CVS) is a prenatal test that can identify genetic defects in a fetus as early as 11 weeks of pregnancy. However, it carries risks such as miscarriage, cramps, fever, and a potential for blood mixing. It is recommended to work with an experienced doctor and confirm any positive results with additional tests.
Chorionic villus sampling (CVS) is an excellent diagnostic tool for expectant parents, as it can be used to identify potential problems with a fetus at a very early stage. However, the procedure carries some risks, as does any invasive diagnostic procedure. Women who are considering chorionic villus sampling should discuss the risks of the procedure with their physicians, weighing the benefits carefully against the potential cost.
When chorionic villus sampling is performed, a small sample of the placenta is removed for analysis. Because the placenta contains fetal material, it can reveal genetic defects that can lead to problems for the fetus. This prenatal test can be performed as early as 11 weeks of pregnancy, which is why parents choose it, as they can have concrete information about the health of the fetus beforehand.
One of the major risks of chorionic villus sampling is miscarriage. In one in 100 or 200 cases, the procedure is linked to miscarriage. In an experienced clinic, this rate can drop to one in 300 to 400. If you’re concerned about the risks of chorionic villus sampling, it’s a good idea to work with a very experienced doctor; don’t be afraid to ask a doctor about the rate of complications that he has personally experienced.
The procedure also has a number of side effects, some of which can be risky. Cramps are very common, as are light spots and some pain. Fever and chills may accompany chorionic villus sampling, and in some cases there is a leak of amniotic fluid. Leakage is another risk of chorionic villus sampling, as it can lower the amniotic fluid to a dangerous level for the baby.
If a mother is Rh negative, one of the risks of chorionic villus sampling is her blood mixing with that of the fetus, potentially causing an immune system reaction due to incompatible blood types present. It is hoped that the blood group incompatibility has already been identified in previous prenatal tests and that the mother has been given Rh immunoglobulin, which will prevent this reaction.
If done before 10 weeks, another risk of chorionic villus sampling is the potential for missing fingers and toes in the newborn. For this reason, the procedure is only recommended for women who are at least 11 weeks pregnant. Also, CVS is not recommended for women who are currently dealing with infections, women who have had abnormal bleeding, and women who are carrying twins. It’s also important to remember that false positives do occur with CVS, so it’s a great idea to confirm any positive results with additional tests before making any medical decisions.
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