Small screening is a method of examination for pregnant women, which also has its unique significance for pregnant mothers. The timing and content of prenatal screening are also one of the concerns for pregnant women. So, when should the small screening test be done? What are the contents of the small screening examination? Next, the editor will provide a detailed introduction for everyone.
When is the scheduled time for the small screening test
Minor abnormalities in fetal development are mainly examined for the maturity of internal organs, and the examination time is between 28-32 weeks. Some fetal developmental abnormalities that only occur in late pregnancy are excluded, and the position and maturity of the fetus, placenta, amniotic fluid, etc. are understood Determine whether the fetus has umbilical cord entanglement, how many weeks of entanglement around the neck, and whether the entanglement is tight or not.
What are the contents of the small screening examination
The first ultrasound examination: At 6-8 weeks, the main purpose is to exclude or detect ectopic pregnancy (ectopic pregnancy) or abnormal pregnancy (molar pregnancy, etc.) in a timely manner, and to understand whether the embryo is alive.
Second ultrasound examination: At 11-14 weeks, the main task is to perform fetal NT measurements, combined with maternal serum blood tests, to assess the risk of fetal chromosomal abnormalities.
The third ultrasound examination: At 18-24 weeks, the main purpose is to systematically screen for fetal development and diagnose fatal fetal malformations, including anencephaly, encephalocele, open spina bifida, thoracoabdominal wall defect, visceral eversion, single chamber heart, and fatal chondrodysplasia.
4th and 5th ultrasound: At 32-38 weeks, exclude some fetal developmental abnormalities that only occur in late pregnancy, and understand the position of the fetus, placental position and maturity, and amount of amniotic fluid. To determine whether the fetus has umbilical cord entanglement, how many times it is wrapped around the neck, and whether it is tight or not, and to understand the blood flow of the umbilical cord to assess the safety of the fetus in the uterus.
The above is some content introduced by the editor about when to do small screening examination, hoping to be helpful to everyone. In summary, this examination method is still quite important, and pregnant mothers should also attach great importance to it. The editor suggests that pregnant mothers can read more mother and baby books to enrich themselves in their spare time.
