Choronic Villi sampling
is one of the genetic tests done during pregnancy to screen genetic disorders
in babies. Read on to find more about Choronic Villi sampling.
Villi Sampling or CVS is done on pregnant women to screen the baby for genetic
problems. Some women have greater risk of forwarding genetic disorders to their
children. One of them is pregnant women over 35. It is recommended to go for a
genetic counselling before the procedure in which the benefits and risk are
properly discussed with both the parents.
What is Choronic Villi
Chorionic Villi Sampling
(CVS) is a test that gives a complete picture of the genetic makeup of the
developing foetus. This procedure involves taking a sample of the
Chorion, a membrane surrounding the foetus, either via the vagina and cervix,
or through a needle inserted in the abdominal wall. Since the sample is taken
directly from the foetus, its examination can help in identifying any defects
in the baby.
Choronic Villi is the tiny finger like
projections found in placenta. It has the same cells as that in the babyâ€™s
cell. The doctor takes a sample of Choronic Villi cells and sends it for biopsy
where these cells are checked for problems. The test is done in late first
trimester, usually between 10th and 12th
weeks of pregnancy.
Which factors that put you at risk of
passing on genetic
Your Age â€“
Although anyone can pass on genetic disorder or have a child with chromosomal
abnormality, the risk rises as the age of the mother increases.
History â€“ If you or your husband has chromosomal abnormality or there
is family history of any kind of genetic disorder, your child is at augmented
risk for genetic problems.
Your History â€“
If you were pregnant previously with a genetically abnormal child, there is
absolute possibility of the same thing next time.
results â€“ If early ultrasound results show that your child has
structural defects, it can be linked to a chromosomal problem.
Down syndrome screening
results â€“ If you had a first trimester screening indicating that your
child is at higher risk of Down syndrome or any other chromosomal
Risks involved in Choronic Villi
Here are some of the risks
involves in Choronic Villi Sampling.
is a risk of miscarriage and statistic show that 1% of chances of miscarriage
is there after the procedure of CVS is carried out. This risk percentage is
slightly higher than that in carrying out amniocentesis.
Defects in fingers and
Rare cases have been reported of having
defects in fingers and toes of the newborn due to CVS done.
not very common, infection is possible because of the process of Choronic Villi
testing is not recommended for
Women with an active infection,
such as any sexually transmitted disease
Women who had vaginal bleeding
Women who have tilted uterus or
Side effects of the
Cramping or moderate to severe
Leakage of amniotic fluid through
Chills or fever
In belly procedure, redness or
swelling at the part needle was
getting the results, some women prefer terminating the pregnancy while some
like to continue. It is better to go for further counselling or
Choronic Villi sampling is a prenatal test done to
determine whether the child has any genetic disorder or not. It is good to
discuss the treatments of the defect found in the child and weigh the chances
of getting cured.
Who should undergo
Choronic Villi sampling? What are the benefits of getting Choronic Villi
sampling done? What are the risks associated with Choronic Villi sampling?
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- The Indiaparenting Team