The obstetric ultrasound report includes basic information of pregnant women, examination items, ultrasound observations and ultrasound tips. Normal results Early pregnancy 1. mainly used to check the nuchal translucency (NT), the normal result is the thickness of the nuchal translucency layer within 2.5mm; 2. used to confirm the fetal sac, if it is a normal fetal sac, the ultrasound often shows no echo, located in one side of the endometrium instead of the midline of the uterine cavity, the specific “double ring sign” formed by the chorionic villi and uterine meconium can be seen around the no echo “This result indicates the beginning of intrauterine pregnancy and the gradual development of the fetus. Mid and late pregnancy Ultrasound at this time is mainly used to detect fetal growth and development abnormalities, structural abnormalities, placenta and amniotic fluid abnormalities. Normal ultrasound shows clear amniotic fluid with no abnormal dotted or striped echogenicity, unidirectional blood flow in the umbilical vein and gradual increase in flow rate. This result indicates that the pregnancy has failed and further blood HCG measurement is needed to make a clear diagnosis so as to perform medical abortion or uterus removal surgery; 2. NT value > 2.5mm: this result indicates that there may be fetal chromosomal abnormality or developmental malformation, and further amniocentesis is needed. If the fluid accumulation is small and there is no vaginal bleeding, abdominal pain and other discomfort, regular observation is sufficient. If the effusion gradually increases, accompanied by abdominal pain, vaginal bleeding and other symptoms of pre-eclampsia, you need to take oral fetal preservation medication according to medical advice and regular ultrasound review, and pay attention to bed rest, prohibit sex and tub bathing; 4, neural tube abnormalities: mainly manifested as anencephaly, brain expansion, cerebrospinal membrane expansion, spina bifida, cleft lip and cleft palate and other developmental abnormalities; 5, pericardial effusion: if the amount of pericardial effusion <2mm, it can be closely observed. can be closely observed, sometimes it will be absorbed on its own and there is no need to worry. If fetal pericardial effusion is too much, fetal heart ultrasound can be done to make a clear diagnosis; 6, placenta praevia: the position of placenta is commonly lower than the fetal previa, covering the inner cervical opening or close to it. In the event of placenta praevia, we should closely observe whether the pregnant woman has vaginal bleeding, observe the amount of bleeding, monitor the fetal intrauterine condition with fetal heart monitoring, and at the same time, do regular maternity checkups, pay attention to bed rest, and prohibit sexual intercourse, etc.; 7. Amniotic fluid abnormalities: the normal value of amniotic fluid index (AFI) in late pregnancy is 5.0-20.0 cm. The amniotic fluid index is less than 5 cm, the ultrasound often shows that there is no obvious amniotic fluid around the fetus, the fetus is "stuffed" in the uterine cavity, and its movement is limited, so it is necessary to monitor the amniotic fluid volume and umbilical artery blood flow S/D ratio twice a week to evaluate the fetal growth, and to perform fetal heart monitoring at least twice a week. The ultrasound often shows that the fetus is floating in the amniotic fluid or sinking at the bottom of the amniotic cavity, far away from the anterior wall of the uterus. At this time, it is necessary to control the diet, exercise appropriately, monitor the blood sugar to keep it within a reasonable range, and give medication if necessary. If there is abdominal distension and pain, amniocentesis can be performed if necessary to release an appropriate amount of amniotic fluid to relieve the discomfort; 8, the umbilical cord around the neck: If the cord is around the neck of one circle, as long as you pay attention to regular maternity checks and try to sleep on the left side, there is usually no big problem, you can consider normal delivery; if the cord is around the neck of more than two circles, pay attention to regular fetal heart monitoring, and learn to count the fetal movement, and if there is a decrease or increase in fetal movement, you should If there is a decrease or increase in fetal movement, go to the obstetrics department as soon as possible.