39 weeks of pregnancy uterine height abdominal circumference standard

At every stage of pregnancy, pregnant women need to undergo a uterine height and abdominal circumference examination, because the uterine height and abdominal circumference examination can effectively detect whether the fetus meets the standards at each growth stage. If the uterine height and abdominal circumference are checked in the late pregnancy, it can not only detect the development of the fetus, but also determine whether the pregnant woman can choose to give birth naturally. So if a pregnant woman is 39 weeks pregnant and has a uterine height and abdominal circumference examination, what is the specific standard?

Standard value of uterine height and abdominal circumference during pregnancy

Specific method: After the pregnant woman has emptied her urine, she should lie quietly on the bed as required by the doctor, and then use a soft ruler to measure the distance between the midpoint of the upper edge of the pubic symphysis and the fundus of the uterus.

Standard value:

20 weeks of pregnancy: 16.0-20.5CM;

21 weeks of pregnancy: 17.0-21.5CM;

22 weeks of pregnancy: 18.0-22.5CM;

23 weeks of pregnancy: 19.0-23.5CM;

24 weeks of pregnancy: 20.0-24.5CM;

25 weeks of pregnancy: 21.0-25.5CM;

26 weeks of pregnancy: 21.5-26.5CM;

27 weeks of pregnancy: 22.5-27.5CM;

28 weeks of pregnancy: 23.0-28.5CM;

29 weeks of pregnancy: 23.5-29.5CM;

30 weeks of pregnancy: 24.0-30.5CM;

31 weeks of pregnancy: 25.0-31.5CM;

32 weeks of pregnancy: 26.0-32.5CM;

33 weeks of pregnancy: 27.0-33.5CM;

34 weeks of pregnancy: 27.5-34.5CM;

35 weeks of pregnancy: 28.5-35.5CM;

36 weeks of pregnancy: 29.0-36.5CM;

37 weeks of pregnancy: 29.5-37.5CM;

38 weeks of pregnancy: 30.5-38.5CM;

39 weeks of pregnancy: 31.0-38.5CM;

40 weeks of pregnancy: 32.0-38.5CM.

How to measure uterine height and abdominal circumference

Method for measuring uterine height: Let the pregnant woman lie flat on the bed after urinating, and use a soft tape measure to measure the distance from the midpoint of the upper edge of the pubic symphysis to the fundus of the uterus. Generally, measurements should be taken every 4 weeks starting from the 20th week of pregnancy; every 2 weeks from the 28th to 35th week of pregnancy; and once a week after the 36th week of pregnancy.

The measurement results are plotted on a pregnancy chart to see whether the fetal development is consistent with the gestational age. When measuring the height of the uterine fundus, if it is found to be inconsistent with the gestational age, or too large or too small, the cause should be found. Such as B-ultrasound and other special examinations to check for twins, deformities, stillbirths, too much or too little amniotic fluid, etc.

How to measure abdominal circumference: Measure the length from the navel to the waist and abdomen. When measuring, make sure the lower part of the tape measure is completely close to the body, but do not tighten the abdomen.

Understand the size of the transverse diameter of the uterus and the corresponding height of the uterine fundus in order to understand the situation inside the cavity and whether the size of the uterus is consistent with the gestational age.

After the editor’s introduction, I believe that all expectant mothers have already understood the standard values ​​of uterine height and abdominal circumference during pregnancy and how to measure uterine height and abdominal circumference. If you are a pregnant mother, you should start measuring your baby's uterine height diligently from the 20th week, and measure it every week. I hope this article can help you!