Which condition is NOT a contraindication for CVS?

Chorionic villus sampling (CVS) is a prenatal test used to diagnose certain genetic conditions in a fetus. Understanding the contraindications for this procedure is essential in ensuring the safety of both the mother and the fetus.

Rh isoimmunization is a condition where there is an incompatibility between the mother’s Rh blood type and that of the fetus, potentially leading to hemolytic disease of the newborn. However, this condition is not considered a contraindication for CVS. The reason is that while Rh isoimmunization requires careful monitoring and management, it does not inherently raise the risk during the procedure itself. CVS can be performed safely with appropriate precautions, such as ensuring that Rh-negative mothers receive Rh immunoglobulin if necessary after the procedure.

In comparison, active genital tract infections present a risk of introducing infection to the fetus during CVS, making this a strong contraindication. Extremes in uterine position can complicate access to the placenta, impacting the procedure's feasibility and safety. Maternal obesity can pose technical challenges and increase the risk of complications during CVS but does not categorically contraindicate the procedure.

Thus, Rh isoimmunization stands out as a condition that does not contraindicate the performance of CVS, as appropriate management