Etymed
chorionic villus sampling
Definition
A prenatal diagnostic procedure that involves taking a small sample of placental tissue to test for genetic abnormalities
Clinical context
A 32-year-old pregnant woman with a family history of cystic fibrosis undergoes chorionic villus sampling at 10 weeks gestation to determine if her fetus has inherited the disease. The procedure is performed under ultrasound guidance by inserting a thin catheter through the cervix to obtain placental tissue for genetic analysis.
Mnemonic
C-V-S for Chromosomal Villi Sampling - 'Chromosomal' in the 'Villi' of the 'Sampling' placenta
These morphemes also unlock…
- chori/o — fetus; placenta
- on/o — fetus; child
- vill/o — hair; small projection
- us — of
- sampl — to take a sample
- ing — process of