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chorionic villus biopsy |
Also found in: Dictionary/thesaurus, Acronyms, Encyclopedia, Wikipedia, Hutchinson | 0.03 sec. |
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Chorionic villus biopsy A procedure used for prenatal diagnosis at 10-12 weeks gestation. Under ultrasound guidance a needle is inserted either through the mother's vagina or abdominal wall and a sample of cells is collected from around the early embryo. These cells are then tested for chromosome abnormalities or other genetic diseases. Mentioned in: Wiskott-Aldrich Syndrome chorionic villus biopsy Chorionic villus sampling Obstetrics A method for early–1st trimester diagnosis of fetal genetic defects and other diseases; tissue is obtained at 8-12 wks–vs 16th wk for amniotic
fluid analysis from developing placenta by ultrasound-guided transcervical catheter aspiration Bx; tissue obtained is from the chorion frondosum, the layer from which chorionic villi develop Diagnostic yield CVB, 97.8% vs amniocentesis at 16 wks,
99.4%. See Amniocentesis. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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