chorionic villus sampling

chorionic villus sampling
= CVS
an invasive procedure for prenatal diagnosis in which a sample of placental tissue (containing chorionic villi) is aspirated through the cervix or abdomen under ultrasound visualization. It is usually performed between the 10th and 13th weeks of gestation. The cells so obtained are subjected to chromosomal analysis to determine if any abnormalities are present in the fetus. This enables the diagnosis of chromosomal abnormalities, such as Down's syndrome.

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  • Chorionic villus sampling — Intervention Model of human embryo 1.3 mm. long. (Villi of chorion labeled at lower right.) ICD 10 PCS 16603 00 …   Wikipedia

  • chorionic villus sampling — also chorionic villi sampling n biopsy of the chorion frondosum through the abdominal wall or by way of the vagina and uterine cervix at 10 to 12 weeks of gestation to obtain fetal cells for the prenatal diagnosis of chromosomal abnormalities… …   Medical dictionary

  • chorionic villus sampling — n. a test for detecting genetic abnormalities, determining sex, etc. in a fetus: tissue samples of chorionic villi are removed from the uterus …   English World dictionary

  • chorionic villus sampling — noun Date: 1983 biopsy of a villus of the chorion at usually 10 to 12 weeks of gestation to obtain fetal cells for the prenatal diagnosis of chromosomal abnormalities abbreviation CVS; called also chorionic villi sampling …   New Collegiate Dictionary

  • chorionic villus sampling — a fetal monitoring technique in which a sample of chorionic villus is extracted through the cervix or abdomen under ultrasound visualization. The earliest recommended time for sampling is the ninth week of pregnancy. The cells so obtained are… …   Medical dictionary

  • chorionic villus sampling — noun a prenatal test to detect birth defects at an early stage of pregnancy; tissue from the chorionic villi is assayed • Syn: ↑chorionic villus biopsy • Hypernyms: ↑biopsy …   Useful english dictionary

  • chorionic villus sampling — 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. * * * …   Universalium

  • chorionic villus sampling — chorion′ic vil′lus sam pling n. cvb med a test for detecting birth defects in early pregnancy involving examination of cells obtained from the chorionic villus Abbr.: CVS …   From formal English to slang

  • chorionic villi sampling — noun see chorionic villus sampling …   New Collegiate Dictionary

  • chorionic villi sampling — noun see chorionic villus sampling …   Useful english dictionary

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