What are the items for the antenatal checkup at 16 weeks of pregnancy?

At 16 weeks of pregnancy, the morning sickness of pregnant women will gradually subside. At this time, they will have a better appetite, and more sensitive pregnant women will be able to recognize the beautiful fetal movements. In the second trimester of pregnancy, pregnant women will often suffer from constipation, so they must eat more vegetables and fruits rich in fiber, and insist on doing proper exercise every day, which are all helpful for alleviating constipation during pregnancy. So what new items are included in the 16th week of pregnancy test?

At 16 weeks of pregnancy, weight, blood pressure, Down syndrome screening and fetal heart rate examinations need to be carried out. Controlling weight gain during pregnancy at an appropriate level is related to blood pressure during pregnancy and whether diabetes will occur, and may also affect the body's recovery after giving birth. High blood pressure during pregnancy is very dangerous and should be checked at almost every prenatal checkup. Down screening is very helpful in ensuring the quality of the baby after birth, so every test during pregnancy has practical significance.

In addition, the fetal heartbeat during pregnancy will be adjusted and affected by the central nervous system. According to the data signals, a curve of the fetal heart rate changes can be recorded, so as to understand the fetal movement and determine whether the fetus is suffering from intrauterine hypoxia. The fetus at this time is also very sensitive to sounds, and has a certain learning and memory. At this time, appropriate prenatal education and stimulation of the baby will have an impact on the baby's future behavior and pronunciation.

During the 16th week of pregnancy, a prenatal check-up is done to basically measure blood pressure, listen to the fetal heart rate, accurately measure uterine height, fetal abdominal circumference, weight, etc. to understand the baby's development size. If a general Down syndrome screening is done, an ultrasound examination must be done first to verify the fetal gestational age, and then venous blood is drawn from the pregnant woman to check for high alpha-fetoprotein, human chorionic gonadotropin, free estriol, etc. The probability of the fetus suffering from Down syndrome is calculated based on a comprehensive analysis, with an accuracy of about 70%. A minimally invasive DNA test can also be performed to extract blood from the pregnant woman to check for fetal DNA fragments and to test whether there are any abnormalities in the number of sex chromosomes 13, 18, and 21 in the fetus, to determine the probability of the fetus suffering from Down syndrome, with an accuracy of more than 95%. Down syndrome screening requires an empty stomach test to improve accuracy.