Chorionic Villus Sampling

Chorionic villus sampling (CVS) is a prenatal diagnostic procedure used to detect genetic disorders and other birth defects. It involves the removal of a small sample of tissue from the chorionic villi, which are finger-like projections found on the outside of the placenta. The tissue is then examined for genetic abnormalities. CVS is typically performed between the 10th and 12th weeks of pregnancy. It is performed under ultrasound guidance and can be done transabdominally or transcervically. During the procedure, a thin catheter is inserted through the mother’s abdomen or the cervix and into the uterus. The physician then uses the catheter to extract a small sample of the chorionic villi. The sample is then sent to a laboratory for analysis. The main advantage of CVS is that it can detect genetic disorders and other birth defects in the first trimester of pregnancy, allowing couples to make more informed decisions regarding their pregnancy. CVS is also often used to determine the sex of the baby. Additionally, it can provide information related to the Rh factor of the fetus, which is important for women who are Rh negative. Despite its advantages, there are some risks associated with CVS. These include bleeding, infection, and miscarriage. Additionally, the accuracy of the test results may be affected by the amount of tissue collected and the laboratory technique used. Overall, CVS is a useful tool for detecting genetic abnormalities and other birth defects in the first trimester of pregnancy. However, couples should discuss the risks and benefits of the procedure with their healthcare provider before making a decision.