When it comes to the fetus, the editor has a thousand words to say. All aspects of the fetus are of great concern to both parents. We occasionally hear about the fetal growth index cereb, so what is it? How to determine the development of the fetus? Next, the editor will provide a detailed introduction to this aspect, hoping to be helpful to everyone.
What are the indicators of fetal growth
BPD: biparietal diameter, the longest part of the fetal head from left to right. BPD stands for the biparietal diameter of the fetal head, which refers to the measurement data of the diameters on both sides of the fetal head and is also one of the indicators for calculating fetal size.
HC: Head circumference is calculated based on the biparietal diameter and transverse diameter. Generally, only the biparietal diameter is needed, which is the distance from the brow center to the back of the head.
AC abdomen: circumference, the length of one week of the fetal belly.
FL: Femur length, the length of the fetal thigh bone.
HL: Humerus length, the length of the fetal upper arm bone.
Occipital frontal diameter OFD: the distance from the fetal nasal root to the occipital protuberance.
Abdominal major blood vessel umbilical artery S/D: The ratio of fetal umbilical artery systolic pressure to diastolic pressure, which is related to fetal blood supply. When the placenta function is poor or the umbilical cord is abnormal, this ratio may be abnormal. In normal pregnancy, as the gestational age increases, the fetus needs to increase S to decrease and D to increase, causing the ratio to decrease. In near term pregnancy, S/D is less than 3.
Placental position: Position indicates the position of the placenta on the uterine wall; The normal thickness of the placenta should be between 2.5 and 5 centimeters; Some reports classify the position of the placenta as grade III, with grade I being the early stage of placental maturation and uniform echogenicity. This change can be observed at 30-32 weeks of pregnancy; Grade II indicates that the placenta is approaching maturity; Level III indicates that the placenta has matured. The closer it is to term, the more mature the placenta becomes, and the uneven echo. If the placenta position detection is too low, it may block the cervical opening and affect normal delivery.
How to determine the development of the fetus
1. Firstly, the development of fetal length can be determined by measuring the height of the uterine fundus (i.e. the distance from the uterine fundus to the pubic symphysis). Generally, at 16 weeks of pregnancy, the uterine fundus is located approximately in the center of the pubic bone and navel; At 20-22 weeks of pregnancy, the uterine floor basically reaches the navel; At 32 weeks of pregnancy, the uterine floor reaches 2-4 centimeters below the xiphoid process. When exceeding or significantly falling behind the corresponding indicators, it indicates abnormal fetal development, and the cause should be investigated under the guidance of a doctor.
2. Secondly, fetal weight gain can be monitored for normality by examining the weight gain of pregnant women. During pregnancy, the average weight gain of pregnant women should be 10-12 kilograms. The fetus weighs about 3 kilograms, the placenta weighs about 0.6 grams, and the amniotic fluid weighs about 0.8 kilograms, totaling about 4.5 kilograms. Other factors such as the uterus, breasts, blood, and water have increased by approximately 5 kilograms, totaling around 10 kilograms. During 34-38 weeks of pregnancy, the average weight gain of pregnant women is 0.5 kilograms per week. In the late stage of pregnancy, the average weekly weight gain is 0-35 kilograms. If the weight gain is too fast, edema may occur.
3. At the same time, we can also determine whether fetal development is normal by monitoring fetal movement. Normally, a normal fetus should have at least 3-5 fetal movements per hour, and a total of approximately 30-40 movements per 12 hours. You can measure for 1 hour each in the morning, afternoon, and evening, and then multiply the total of these 3 hours by 4 to obtain the 12 hour fetal movement count. If it is less than 10 times, it indicates that there is a problem with the fetus and immediate medical attention should be sought.
The above is some content about the fetal growth index cereb introduced by the editor, hoping to be helpful to everyone. Do you have any further questions about this topic after listening to my introduction? To be honest, this aspect of content is closely related to our daily lives, and it is necessary for us to learn it.
