The main disadvantages of Chorionic Villus Sampling (CVS) primarily involve potential complications that can arise from the procedure. Before undergoing CVS, individuals are typically informed about these possible risks.
What are the Disadvantages of CVS?
Chorionic Villus Sampling (CVS) is a diagnostic test performed during pregnancy, but like any medical procedure, it carries certain risks and potential drawbacks. Understanding these disadvantages is crucial for making an informed decision.
Here are the primary disadvantages associated with CVS:
Possible Complications of CVS
- Miscarriage: This is a significant concern associated with CVS. The procedure can unfortunately lead to a miscarriage, which is defined as the loss of a pregnancy within the first 23 weeks. While the risk is generally low, it is a serious potential outcome that patients need to be aware of.
- Inadequate Sample: Sometimes, the sample of chorionic villi collected during the procedure may not be sufficient or suitable for analysis. This can necessitate a repeat procedure, or in some cases, the need for an alternative diagnostic test, such as amniocentesis, which can cause additional stress and delay in receiving results.
- Infection: As with any invasive medical procedure, there is a risk of developing an infection. Although rare, an infection can occur at the site of the sample collection, potentially affecting both the mother and the fetus.
- Rhesus Sensitisation: For Rh-negative pregnant individuals, there is a risk of rhesus sensitisation. This occurs when fetal blood cells (which may be Rh-positive) enter the mother's bloodstream during the procedure, leading the mother's immune system to produce antibodies. This can cause problems in future pregnancies if not managed appropriately, often by administering anti-D immunoglobulin.
It is important for expectant parents to discuss these potential disadvantages with their healthcare provider to weigh the risks against the benefits of obtaining a diagnosis.