Amniotic membrane aspiration surgery, like Down syndrome screening, is one of the special medical techniques used to examine the growth and development of the fetus in the pregnant woman's abdomen. Amniotic membrane puncture is mainly used to extract amniotic fluid from the abdomen of pregnant women to understand the chromosomal situation of the fetus, and the amniocentesis needle plays a certain role in it. So, how long does it take to know the result of amniocentesis needle injection?
Hymenocentesis is the process of using an amniocentesis needle guided by sound waves to pass through the pregnant woman's abdomen until it reaches the uterine amniotic fluid cavity, in order to extract some amniotic fluid. The needle used inside is called the 'amniocentesis needle'. Doctors mainly use the amniotic fluid of pregnant women to check if the fetal chromosome composition is normal, and sometimes they can also use the protein content in the amniotic fluid to check if the fetal surface is normal and healthy.
The amniocentesis needle is about 10 centimeters long, and the tube body is thinner than a typical blood drawing needle. Because the pregnant woman's abdominal nerves are not very sensitive, inserting the needle will not make the pregnant woman feel much. And after amniocentesis, the examination can be completed quickly. To know the fetal examination report, one needs to patiently wait for 2-3 weeks. After all, the amniotic fluid is extracted very little, and there are also very few cells inside. It is necessary to wait for a certain number of cells to divide again in order to understand the condition of the fetus.
Generally, pregnant women come to the hospital for amniocentesis examination, usually at 16 weeks of pregnancy, around 14-18 weeks. This is mainly because when the gestational age is less than 14 weeks, it is difficult to detect fetal growth due to insufficient amniotic fluid in the abdomen. If the gestational weeks are too long and abnormal fetal growth is detected at that time, stopping the pregnancy is very troublesome and dangerous.
