Video:How Does Chorionic Villus Sampling Work?with Blausen Med
Chorionic villus sampling tests the placenta for chromosomal abnormalities in a fetus. Learn more about CVS.
Transcript:How Does Chorionic Villus Sampling Work?
A Healthy PregnancyDuring pregnancy, a woman's uterus houses and protects a developing fetus for about nine months. Within the uterus, the fetus is surrounded by a sac called the chorionic membrane. Special cells extend from this membrane into the placenta; these cells are called chorionic villi.
What Is Chorionic Villus Sampling?Chorionic villi cells have the same genetic makeup as the growing fetus and can be analyzed to identify genetic and chromosomal abnormalities. This procedure is called Chorionic Villus Sampling, or simply CVS.
Procedure for Chorionic Villus SamplingThe placenta can be in several different locations within the uterus. Therefore, an ultrasound is performed to locate the placenta and determine the best approach for the procedure. A catheter is then guided through the vagina and cervix to the placenta. With suction from the catheter, a small piece of the placenta is gently removed.
Getting Results of Your Chorionic Villus SamplingThe chorionic cells are sent to a laboratory for examination and final test results can be expected in one to two weeks.
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