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Doctor insights on: Chorionic Villus Sampling

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Dr. Kimberly Fortner
84 doctors shared insights

Chorionic Villi Sampling (Definition)

It is a small biopsy of the developing placenta taken to analyze the chromosomal makeup of that ...Read more


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What instruments are used to perform a chorionic villi sampling?

What instruments are used to perform a chorionic villi sampling?

Ultrasound: Ultrasound is used to assess the anatomy of the fetus and placenta. This allows directed placement of the biopsy needle to get a speciman. This is usually done under local anesthesia. ...Read more

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Does chorionic villi sampling determine whether a fetus has genetic abnormalities?

Does chorionic villi sampling determine whether a fetus has genetic abnormalities?

Yes and no: Chorionic villi sampling is a procedure where a small sample of cells from the placenta are removed, early in a pregnancy. A lab can determine if there are any extra or missing chromosomes, or large parts of a chromosome that are extra or missing. Other tests on chorionic villi can look for abnormalities in single genes, but no test can determine that a baby has no genetic abnormalities. ...Read more

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How would chorionic villi sampling determine whether a fetus has genetic abnormalities?

How would chorionic villi sampling determine whether a fetus has genetic abnormalities?

Laboratory testing: Cvs sampling after 10 weeks of gestation can obtain tissue for testing. The tests usually done are chromosomal analysis or mutational analysis of a specific gene. ...Read more

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How could chorionic villi sampling determine whether a fetus has genetic abnormalities?

CVS: Chorionic villus sampling is a procedure to obtain a small amount of tissue from the placenta. The placenta has the same genetic endowment as the fetus. So chromosomal or genetic testing of the chorionic villus will tell about the fetus. ...Read more

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I cannot find a doctor who is willing to perform chorionic villi testing. Any ideas why not? What are risks?

I cannot find a doctor who is willing to perform chorionic villi testing. Any ideas why not? What are risks?

Top caliber maternal: Fetal centers especially those with medical school affiliations should either perform chorionic villus sampling or be able to refer you to a center that does. There is a 1% risk of miscarriage & very minor risk of infection spotting pain or crampiing. Advantage over amniocentesis is that it can be performed earlier in pregnancy (10 -13 weeks after your last menstrual period). ...Read more

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At what stage is chorionic villus sampling done?

At what stage is chorionic villus sampling done?

10-12 weeks: Chorionic villus sampling (cvs) obtains cells from the fetoplacenta for testing at 10-12 weeks of pregnancy, amniocentesis obtains fetal skin/urine cells at 16-18 weeks. Higher risks for miscarriage (2-3% for cvs, <0.5% or negligible for amnio) balance against the cvs advantage of testing before a women "shows, " preserving the privacy of pregnancy (testing). ...Read more