chorionic villus sampling


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Related to chorionic villus sampling: amniocentesis, nuchal translucency, percutaneous umbilical blood sampling

chorionic villus sampling

n. Abbr. CVS
A prenatal test to detect birth defects that is performed at an early stage of pregnancy and involves retrieval and examination of tissue from the chorionic villi. Also called chorionic villus biopsy.

chorionic villus sampling

n
(Gynaecology & Obstetrics) a method of diagnosing genetic disorders early in pregnancy by the removal by catheter through the cervix or abdomen of a tiny sample of tissue from the chorionic villi. Abbreviation: CVS

chorion′ic vil′lus sam`pling


n.
a test for detecting birth defects in early pregnancy involving examination of cells obtained from the chorionic villus. Abbr.: CVS
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chorionic villus sampling - a prenatal test to detect birth defects at an early stage of pregnancy; tissue from the chorionic villi is assayed
biopsy - examination of tissues or liquids from the living body to determine the existence or cause of a disease
References in periodicals archive ?
Despite the decrease in HIV transmission with antiretroviral cover, procedures such as chorionic villus sampling and cordocentesis should still be avoided in the HIV-infected woman as the risk of transmission to the fetus may be considerably higher.
At present the only other way to diagnose these diseases is to do amniocentesis or chorionic villus sampling, both of which carry a small risk of miscarriage.
4) The Royal College of Obstetricians and Gynaecologists guideline on amniocentesis and chorionic villus sampling advises that patients should be informed of an additional 1% risk of fetal loss following an amniocentesis, and a slightly higher risk following chorionic villus sampling.
All of these pregnant women are then offered the option of further, invasive tests including amniocentesis or chorionic villus sampling, which have about a 1% risk of miscarriage.
Amniocentesis is associated with a one-in-two hundred incidence, and chorionic villus sampling with a one-in-one hundred incidence of abortion of the unborn child.
Both amniocentesis and another procedure called chorionic villus sampling, in which doctors pluck bits of the placenta, isolate fetal cells that can reveal many genetic problems in an unborn baby with near certainty.
Previously, the only way to know if a woman was having a baby with Down's was with second-trimester blood tests and/or invasive amniocentesis or chorionic villus sampling (CVS) tests, all of which carry a slight risk of miscarriage.
The test is not diagnostic and a positive result is usually followed up with a diagnostic amniocentesis or chorionic villus sampling test.
The definitive antenatal screening tests for Down's syndrome are amniocentesis or chorionic villus sampling (CVS).
One caveat with first-trimester screening is the need to train a sufficient number of physicians in chorionic villus sampling.
They include amniocentesis, chorionic villus sampling (CVS) and foetal blood sampling.
Institute director Yury Verlinsky, MD said that prenatal testing via amniocentesis or chorionic villus sampling (CVS, which he pioneered) could detect such genetic vulnerabilities to cancer when the fetus is in the womb.