Obstetric ultrasound and some routine checkups are mainly completed at 20 weeks of pregnancy.
Obstetric ultrasound is the main checkup item at 20 weeks of pregnancy. At this time, as the fetus has more space to move around in the uterus and the size of the fetus is moderate, it is necessary to measure the development of fetal biparietal diameter, abdominal circumference, and femur length according to the appropriate fetal position, and to observe the development of the fetal brain, the fetal heart rate, the position of the placenta, and the amount of amniotic fluid, and so on.
At the same time, it is necessary to carry out some routine maternity checkups, such as measuring blood pressure, weight, blood routine, urine routine, liver and kidney functions, abdominal circumference and uterine height, and fetal heartbeat monitoring, etc., in order to understand the overall physical condition of the mother and the degree of development of the fetus in line with the gestational week.