During pregnancy, every move of the fetus affects the hearts of parents, and many parents are very worried that the fetus may have accidents. Therefore, they will regularly go to the hospital for prenatal check ups. It is indeed necessary to regularly understand the fetus's movements during pregnancy. Below, the editor will focus on introducing it to everyone. Is it normal for a fetus with a biparietal diameter of 90mm at 34 weeks of pregnancy?
Is it normal for a fetus with a biparietal diameter of 90mm at 34 weeks of gestation
At 34 weeks of pregnancy, the fetal biparietal diameter of 90mm is a bit large. The biparietal diameter, also known as the fetal head biparietal diameter, refers to the length of the widest part between the left and right sides of the fetal head, also known as the "large transverse diameter of the head". B-ultrasound measurement of BPD8.5 shows fetal maturity. Doctors often use it to observe the development of children, determine whether there is a head and pelvis imbalance, and ensure a smooth delivery. At full-term pregnancy, it should reach 9.3 centimeters or more. According to the general rule, after 5 months of pregnancy, the BPD basically matches the month of pregnancy, which means that at 28 weeks (7 months) of pregnancy, the BPD is about 7.0 centimeters, at 32 weeks (8 months), it is about 8.0 centimeters, and so on. After 8 months of pregnancy, an average weekly growth of about 0.2 centimeters is considered normal. When the expected production date cannot be determined through CRL in the initial stage, it is often predicted through BPD; After the mid-term, when estimating fetal weight, it is often necessary to measure this data.
How to measure fetal weight
1. Calculation formula: 1.07 * BPD * BPD * BPD+0.3 * AC * AC * FL. BPD： Double top diameter, AC： Abdominal circumference, FL： Femoral length, all input units are centimeters (cm), and decimals can be entered.
2. Other fetal weight predictions:
Formula 1: Y=-4973.72+260.69HC。
Formula 2: Y=-2686.60+171.48AC。
Formula 3: Y=-2232.56+747.42FL。
Formula 4: Y=-2513.51+1049.90FTH。
Formula 5: Y=-5168.32+100.97HC+110.86AC+143.09FL+331.43FTH。
Is it normal for a fetus with a biparietal diameter of 90mm at 34 weeks of pregnancy? It is important for pregnant women to rest and engage in regular physical exercise during pregnancy, as it can greatly improve their immune system. For pregnant women, physical exercise during later stages of delivery can also aid in childbirth.
