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chorionic villus sampling
noun
- a prenatal test for detecting birth defects at an early stage of pregnancy, involving removal by needle of fluid from the chorionic villus, and examination of the cells obtained.
chorionic villus sampling
noun
- 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 CVS
chorionic villus sampling
/ ô′ē-ŏ′ĭ /
- A prenatal procedure performed in the first trimester of pregnancy to detect chromosomal defects, consisting of retrieval and examination of tissue from the chorionic villi (projections on the surface of the chorion). The tissue is obtained by passing a catheter through the cervix into the placenta.
Example Sentences
CVS or chorionic villus sampling, is offered at 10 to 13 weeks gestation.
In addition to amniocentesis, which removes and tests a small sample of cells from amniotic fluid, these also include CVS, or chorionic villus sampling, which tests a small piece of tissue from the placenta.
This restriction stems from the fact that the analysis currently necessitates either chorionic villus sampling or amniocentesis, both procedures associated with discomfort and a slight risk of miscarriage.
The same would be true of women who have prenatal testing of fetuses with amniocentesis or chorionic villus sampling, known as C.V.S.
Zernicka-Goetz writes compellingly about her own experiences of a pregnancy in which the fetus was diagnosed through chorionic villus sampling with a risk of severe chromosomal abnormality.
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