From the moment expectant mothers learn that they are pregnant, many pregnancy tests will begin to take place, among which B-ultrasound is an important test that runs through the entire pregnancy, helping doctors and mothers better understand the growth and development of their babies. So, what does BPD mean on an ultrasound scan?
The BPD in the ultrasound examination form is the biparietal diameter of the fetus, which is one of the many indicators for evaluating the fetus. The average value is generally 8.17cm, which is the diameter line between the bilateral temporal parts of the fetus. It is the most basic measurement value in obstetric examinations and can be used to evaluate whether the development of the fetal head is consistent with the gestational age. This data is also an important indicator for determining whether the fetus can pass through the birth canal. In addition, the measurement of the biparietal diameter of the fetal head is also an important indicator for estimating gestational age and fetal maturity. Expectant mothers without high-risk factors usually undergo 4-5 ultrasound examinations throughout their entire pregnancy.
The first step in confirming the health of the baby during 6-8 weeks of pregnancy is to exclude or promptly detect ectopic pregnancy or abnormal pregnancy. During 11-14 weeks of pregnancy, NT should be checked to assess whether there are chromosomal abnormalities. During 18-24 weeks of pregnancy, the main purpose is to systematically screen fetal development and diagnose fatal fetal malformations. During 32-38 weeks of pregnancy, the baby's development should be monitored.
During late pregnancy and before delivery, 1-2 B-ultrasound examinations will be performed. In addition to some fetal developmental abnormalities that only occur in late pregnancy, it is also necessary to understand the baby's position, weight, placental position and maturity, and the amount of amniotic fluid. It is also necessary to determine whether there is umbilical cord entanglement, understand the blood flow of the umbilical cord, and evaluate whether vaginal delivery is possible. If there are any abnormal situations during the prenatal examination that require re examination, it will increase the frequency of B-ultrasound examinations.
