Which department should I go to for amniocentesis?

Amniocentesis is a common diagnostic examination method for pregnant women before delivery. This puncture examination is performed in the second trimester of pregnancy to check the specific health condition of the fetus. This puncture examination is mainly performed in the reproductive genetics department. It mainly refers to using a long ultrasonic needle to pass through the pregnant woman's belly and uterine wall, and then enter the amniotic fluid cavity, so that a small amount of amniotic fluid can be extracted.

Which department should I go to for amniocentesis?

If you want to do amniocentesis, you need to go to the reproductive genetics department of the hospital for examination. A routine blood test needs to be done before amniocentesis. You can do it only if your liver function, coagulation function and blood function are normal.

Amniocentesis

The best time to draw amniotic fluid for prenatal diagnosis is between 16 and 24 weeks of pregnancy. Because the fetus is small at this time and there is relatively more amniotic fluid, the fetus floats in the amniotic fluid with a wider amniotic fluid belt around it. It is not easy to injure the fetus when the amniotic fluid is extracted with a needle. Extracting 20 ml of amniotic fluid only accounts for 1/20 to 1/12 of the total amniotic fluid, which will not cause the uterine cavity to suddenly shrink and cause miscarriage. Moreover, the proportion of active cells in the amniotic fluid is the largest during this period, and the cell culture survival rate is high. It can be used for slide preparation, staining, fetal chromosome karyotype analysis, chromosome genetic disease diagnosis and gender determination, and amniotic fluid cell DNA can also be used to diagnose genetic and metabolic diseases. By measuring alpha-fetoprotein in amniotic fluid, it is also possible to diagnose open neural tube defects in the fetus.

In the late pregnancy, amniocentesis can measure blood type, bilirubin, lecithin, sphingomyelin, placental lactogen, etc., to understand whether there is maternal-fetal blood type incompatibility, hemolysis, fetal lung maturity, skin maturity, placental function, etc.

effect

The best time to do amniocentesis is between 16 and 20 weeks of gestation, usually for pregnant women aged 35 or above. During the procedure, a needle is inserted into your amniotic fluid under the guidance of a level 2 B-ultrasound to draw out some amniotic fluid, which is then taken out and placed in the laboratory for chromosome culture for about a week to determine whether the baby has any deformities, including cleft lip and congenital diseases. The gender can also be determined.

This experiment is risky, but the accuracy rate is over 99%. The accuracy of Down syndrome screening is about 70%, and it is usually performed between 15 and 20 weeks of pregnancy. level 2

The best time to do an ultrasound is at 18 weeks, as it can detect skeletal and visceral deformities including cleft lip, and can also determine the baby's gender.