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A 53-year-old member asked:

What instruments are used to perform a chorionic villi sampling?

2 doctor answers2 doctors weighed in
Dr. Troy Reyna
Pediatric Surgery 45 years experience
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.
Dr. John Berryman
Obstetrics and Gynecology 55 years experience
Chorionic sampling: A small curette is introduced under ultrasound guidance, and a very small piece of placenta is taken and a genetic analysis is performed. An amniocentesis under ultrasound has less potential for harm, so ask your OB provider his/her advice.

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Last updated Oct 25, 2018
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