What is the normal head circumference at 22 weeks?

Fetal head circumference is an indicator of the fetal health, so we need to understand the relevant knowledge of fetal head circumference indicators in detail. The fetal head circumference index also represents the health of the fetus. So how much is the fetal head circumference index worth? Let's discuss how authoritative experts explain this issue based on their many years of clinical experience.

Fetal head circumference refers to the maximum length around the fetal head. The largest part of the fetal head from front to back is usually the distance from the bridge of the nose on the forehead to the occipital protuberance on the back of the head. Therefore, the baby's head circumference is usually the length of the distance from the bridge of the nose on the forehead to the occipital protuberance on the back of the head.

How much is the standard value of a baby's head circumference at 22 weeks

The accurate measurement of the fetal head circumference is the distance around the head from the top of the eyebrows to the occipital mass. The head circumference of the fetus is a standard value that is accurately measured indirectly by B-ultrasound in the uterine cavity. The head circumference of a baby at 22 weeks of pregnancy is generally about 198mm, which can check the size of the fetus's head. If the fetal head circumference is too large, it will hinder delivery. If the fetal head is too large, it may cause infarction. The fetal head may be lowered and encounter obstruction, which may cause dystocia in pregnant women. However, the size of the fetal head circumference at 22 weeks cannot represent the size of the fetal head when the pregnant woman gives birth, because it will continue to grow and develop.

Fetal head circumference standard:

1. 12 weeks of pregnancy: the fetal head circumference is about 56mm; 2. 13 weeks of pregnancy: the fetal head circumference is about 72mm; 3. 14 weeks of pregnancy: the fetal head circumference is about 89mm; 4. 15 weeks of pregnancy: the fetal head circumference is about 105mm; 5. 16 weeks of pregnancy: the fetal head circumference is about 120mm; 6. 17 weeks of pregnancy: the fetal head circumference is about 135mm; 7. 18 weeks of pregnancy: the fetal head circumference is about 149mm; 8. 19 weeks of pregnancy: the fetal head circumference is about 162mm; 9. 20 weeks of pregnancy: the fetal head circumference is about 175mm; 10. 21 weeks of pregnancy: the fetal head circumference is about 187mm;

11. 22 weeks of pregnancy: the fetal head circumference is about 198mm; 12. 23 weeks of pregnancy: the fetal head circumference is about 209mm; 13. 24 weeks of pregnancy: the fetal head circumference is about 220mm; 14. 25 weeks of pregnancy: the fetal head circumference is about 230mm; 15. 26 weeks of pregnancy: the fetal head circumference is about 239mm; 16. 27 weeks of pregnancy: the fetal head circumference is about 249mm; 17. 28 weeks of pregnancy: the fetal head circumference is about 258mm; 18. 29 weeks of pregnancy: the fetal head circumference is about 266mm; 19. 30 weeks of pregnancy: the fetal head circumference is about 275mm; 20. 31 weeks of pregnancy: the fetal head circumference is about 283mm;

21. 32 weeks of pregnancy: the fetal head circumference is about 290mm; 22. 33 weeks of pregnancy: the fetal head circumference is about 298mm; 23. 34 weeks of pregnancy: the fetal head circumference is about 305mm; 24. 35 weeks of pregnancy: the fetal head circumference is about 312mm; 25. 36 weeks of pregnancy: the fetal head circumference is about 319mm; 26. 37 weeks of pregnancy: the fetal head circumference is about 326mm; 27. 38 weeks of pregnancy: the fetal head circumference is about 333mm; 28. 39 weeks of pregnancy: the fetal head circumference is about 339mm; 29. ​​40 weeks of pregnancy: the fetal head circumference is about 345mm; 30. 41 weeks of pregnancy: the fetal head circumference is about 351mm;

How much is the fetal head circumference index value? Based on the above content, we have mastered the relevant professional knowledge of the fetal head circumference index value. We often encounter various children's health conditions in our daily lives, but what we need is to take a proactive approach to these problems and solve them well. If we have that kind of mental state, we can have a happier life. Finally, I wish the children can have a happy childhood!