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Pregnant women will always be particularly curious, 38-40 weeks of pregnancy, the fetus almost occupies the entire uterine cavity of the pregnant woman, the fetal activity space is getting smaller and smaller, the pregnant woman feels that the pregnant belly has not changed, will the fetus stop developing?
In fact, this period is not the soaring period of the fetus, but the fetal brain and lungs are still developing, but the fetal growth will slow down.
The fastest time a fetus grows is at 16-36 weeks' gestation.
At 16 weeks of pregnancy, the fetus weighed only 0.24 pounds, the head and hip length were only 12.5 centimeters, and by 36 weeks of pregnancy, the fetal weight increased to 5.5 kilograms and the height increased to 48 centimeters.
38-40 weeks of pregnancy, the fetus will continue to develop, the fetus appears in these 4 manifestations, indicating that the fetus is developing well, the baby is superior after birth.
Weight gain of the fetus at 38-40 weeks of gestation:
The total weight of the fetus at 38-40 weeks of pregnancy increased by 400-800 grams, the length of the head and hips increased by a total of 1.7 cm, the height increase was relatively small, and the weight increase was relatively more.
1. 38 weeks of pregnancy: head and hip length of about 49.3 cm, weight 6.2 kg, double top diameter 9.08±0.59 cm, abdominal circumference 30.63±2.83 cm, femur length 7.20±0.43 cm.
The respiratory and digestive systems of the fetus have been perfected, the lungs of the fetus have matured, and even if the baby is delivered, the baby can survive outside the utero.
Most of the fetuses have been put into the basin, the number of fetal movements will be relatively reduced, the placental function will become 2-3 grades, and the amniotic water volume will reach 800 ml.
2. 39 weeks of pregnancy:
Weight 6.6 pounds, head and hip length 50 cm, double top diameter 9.21±0.59 cm, abdominal circumference 31.34±3.12 cm, femur length 7.34±0.53 cm.
The fetus will take a large amount of antibodies from the placenta and store them for protection after birth.
At 39 weeks of pregnancy, the fetus will still maintain the posture after entering the pelvis, and the mother's contractions at 39 weeks of pregnancy will be more frequent.
3. 40 weeks of pregnancy:
Head and hip length 51 cm, double top diameter 9.28±0.50 cm, abdominal circumference 31.49± 2.79 cm, femur length 7.4±0.53 cm, weight 6.8 kg.
Hormone secretion at 40 weeks of gestation stimulates maternal delivery, and the fetus completes its first turn in preparation for the upcoming delivery.
38-40 weeks of pregnancy, the fetus is well developed, what are the manifestations?
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1. Lung development of the fetus
Generally speaking, the lungs of the fetus will mature at 38-39 weeks of pregnancy, but some babies develop faster, so the lungs have matured at 38 weeks of pregnancy.
2. The fetus burps frequently
Fetal hiccups are practicing lung breathing, and the fetal lungs will continue to inhale and exhale amniotic fluid to exercise the breathing of their lungs, which can ensure that after the fetus is born, the lungs can start working normally and provide oxygen for the baby.
Fetal hiccups, pregnant women can feel the abdomen beating in bursts, if the pregnant woman often feels that the fetus is practicing hiccups, it proves that the fetus's breathing ability is getting better and better, each hiccup will last 10-15 minutes, the morning and evening appear most frequently.
3. The fetal weight increase is obvious
40 weeks of pregnancy, the weight of the fetus will reach 5.5-7 pounds, if the pregnant woman does not eat much during pregnancy, but the fetal development is also good, that means that the absorption capacity of the fetus is better, after the baby is born, the weight growth will be particularly obvious, and the expectant mother feeding is also easy.
4. There are more forms of fetal movement
Whether it is day or night, the fetal movement is more active fetal baby, and the fetal movement is strong, indicating that the fetus is physically strong, the fetus is active, the fetal baby is healthier, and the resistance will be better after the baby is born.
What obstetric tests do pregnant women do at 38-40 weeks of pregnancy?
The fetus is getting bigger and closer to the due date, so pregnant women have to have a check-up once a week so that if there is an abnormal pregnancy, then the doctor can find out and treat it accordingly.
Obstetric examination items at 38-40 weeks of pregnancy: obstetric examination, urine routine, fetal heart monitoring, at least one prenatal ultrasound at 38-40 weeks of pregnancy, the doctor needs to determine the way of delivery of the pregnant woman. Fetal heart rate monitoring and prenatal B ultrasound are very important and must be done by pregnant women.