Villial puncture, a relatively unfamiliar term, I believe only friends who study science or work in the medical industry know what it means. So, what is chorionic villi puncture? What is the specific process of chorionic villi puncture? Next, the editor will provide a detailed introduction to this aspect, hoping to be helpful to everyone.
What is chorionic villi puncture
CVS, also known as chorionic villus aspiration, is used to diagnose whether the fetus has chromosomal abnormalities, neural tube defects, and certain genetic metabolic diseases that can be reflected in amniotic fluid. During puncture, a puncture needle is used to pierce through the abdominal wall of the pregnant woman and extract a small amount of villi from the uterine cavity for examination. The surgery usually takes place between 11-14 weeks of pregnancy, but due to the higher risk of miscarriage and fetal abnormalities associated with chorionic villus aspiration compared to amniocentesis, amniocentesis is more suitable between 16-22 weeks of pregnancy.
What is the specific process of chorionic villi puncture
Chorionic villi sampling can be performed through the vagina or abdomen. Transvaginal sampling method: The tested woman lies flat with both knees bent, supported by foot or knee pedals; Under the guidance of ultrasound scanning, doctors insert a catheter (a flexible thin tube) through the vagina and cervix into the placental villi, and use an empty needle to extract a small amount of villi for examination. If there are cervical lesions or reproductive tract infections such as genital herpes, gonorrhea, chronic cervicitis, etc., vaginal sampling is not recommended.
Abdominal sampling method: Local anesthesia of the abdominal skin, the puncture needle enters the placental villi through the abdominal wall, and a small amount of villi is extracted using an empty needle tube for testing.
The above is some content about chorionic villi puncture introduced by the editor, hoping to be helpful to everyone. I believe that after listening to the specific and detailed information provided by the editor, friends have gained a brand new understanding of this aspect. If you want to learn more about this topic, the editor suggests that friends can read more medical books in their spare time.
