Amniocentesis chromosome examination, grasp the time

Some babies may be a little unhealthy when they are born. This is mainly because expectant mothers do not take adequate precautions during pregnancy. When the pregnancy reaches a certain period, expectant mothers must go to the hospital for an amniocentesis to detect whether the child is healthy. So when is the best time to do the amniocentesis chromosome test!

1. 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 about a week of chromosome culture to determine whether the baby has deformities, including cleft lip and congenital diseases. The gender can also be found out. 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. The best time to do a level 2 B-ultrasound is at 18 weeks, as it can detect skeletal and visceral deformities including cleft lip, and can also determine the baby’s gender.

2. The fetus, placenta, amnion, chorion and umbilical cord are all developed from the fertilized egg. By extracting amniotic fluid through amniocentesis, culturing the exfoliated cells in the amniotic fluid, and examining the cell karyotype, it is possible to diagnose whether the fetus has chromosomal abnormalities. By examining the enzymes in the cells or amniotic fluid, it is possible to diagnose whether the fetus has enzyme deficiency diseases. By examining the alpha-fetoprotein (AFP) in the amniotic fluid, it is possible to diagnose whether the fetus has anencephaly or open neural tube defects such as open spina bifida. So who is suitable for amniocentesis? The targets are: 1) Elderly pregnant women over 34 years old. 2) Family history includes Down syndrome, etc. 3) Those whose maternal blood probability of Down syndrome is relatively high, that is, greater than 1/270. 4) Those with abnormal nuchal translucency. 5) Those with abnormal results in ultrasound examination.

3. Doing a health check for children who are about to give birth is a way to be responsible for the children as well as for the happiness of your own family. I hope that you who are about to become parents will not do the amniocentesis to identify the gender of your baby, but to go to the hospital on time to have a health check-up for your unborn baby.