Did your doctor advise you to undergo a Chorionic Villus Sampling (CVS)? But do you want to know more about this procedure? If yes, read below.
Understanding Chorionic Villus and CVS Test
The Chorionic Villus is a part of the placenta and CVS is a crucial prenatal diagnostic procedure. The latter plays a significant role in identifying genetic abnormalities in unborn babies.
It is recommended in cases where there is a family history of genetic disorders. Moreover, when other screening tests indicate a potential risk for conditions like Down syndrome or Thalassemia, CVS is recommended.
This minimally invasive procedure involves retrieving a small sample of cells from the placenta, which is then analyzed to assess the genetic composition of the fetus. Learn why it is performed by the doctors of the best IVF clinic in Kolkata.
Reasons why CVS is performed
One of the primary reasons CVS is performed is to detect genetic problems early in pregnancy.
This is crucial for parents to make informed decisions and to prepare for any necessary interventions that may be needed prenatally or after birth.
Timing of the Procedure
The timing of CVS is critical, generally performed between 11 and 14 weeks of gestation.
During this period, the placenta is accessible for sampling and ultrasound imaging helps in accurately guiding the procedure.
What does a CVS procedure involve?
- Before undergoing a CVS procedure, an ultrasound is done for determining the localization of the placenta, the baby’s position and soft markers, if any.
- It’s important to note that the location of the placenta matters. If it is positioned on the anterior wall of uterus, doctors usually go ahead with the procedure, transabdominally.
- On the other hand, if it is located at the posterior wall, transvaginal route is often taken to retrieve placenta tissue.
- CVS procedure involves numbing the skin and then using a specialized needle to extract a small amount of tissue from the Chorionic Villus of the placenta. Ultrasound monitoring ensures precision and safety throughout the process, says the doctors of the best IVF clinic in Kolkata.
- Once the tissue sample is obtained, it is sent to a laboratory for genetic analysis. This analysis reveals the genetic makeup of the placenta, which is representative of the fetus’s genetic composition. It also provides clarity on whether the fetus has inherited any genetic disorders or chromosomal abnormalities.
- After CVS, the patient is advised to rest for a few days to minimize the risk of complications, which may include a slight risk of miscarriage (about 0.3%). If the patient notices any blood or fluid leakage after the procedure, they must seek immediate medical attention.
What does a CVS result indicate?
- For parents, the results of CVS can bring peace of mind if no abnormalities are detected. On the other hand, it can also help them prepare emotionally and practically if challenges lie ahead.
- It allows expectant parents to consider their options early in pregnancy. These may include:
- Seeking specialized prenatal care
- Preparing for the birth of a child with special needs
- Or, making difficult decisions about the continuation of the pregnancy based on the severity of the condition detected.
In cases where genetic disorders are identified, CVS enables doctors to offer comprehensive genetic counselling.
Conclusion
Chorionic Villus Sampling is a valuable tool in prenatal care, providing critical genetic information that helps expectant parents and doctors of the best IVF clinic in Kolkata make informed decisions about the pregnancy. While it carries a small risk, the benefits of early detection and comprehensive genetic assessment often outweigh the potential drawbacks.