chorionic villus sampling

American  

noun

1. 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.

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chorionic villus sampling British  

noun

1.  CVS.  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

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chorionic villus sampling Scientific  

/ kôr′ē-ŏn′ĭk /

1. 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.

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Example Sentences

CVS or chorionic villus sampling, is offered at 10 to 13 weeks gestation.

From Seattle Times • Feb. 12, 2024

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.

From Science Daily • Jan. 4, 2024

In the past, women had to undergo chorionic villus sampling, in which cells are taken from the placenta, or amniocentesis, which involves removing fluid from the womb, to test for the chromosomal abnormality.

From Washington Post • Mar. 5, 2018

Both tests are noninvasive, thus avoiding the 2 percent risk of miscarriage posed by today's most common prenatal genetic tests: amniocentesis and chorionic villus sampling.

From Slate • Sep. 16, 2012

Yet most women deemed at a higher-than-usual risk of an affected pregnancy do not get the invasive tests – amniocentesis or chorionic villus sampling – that can diagnose Down syndrome in the fetus.

From New York Times • Oct. 18, 2011