Average femur length of 30 weeks fetus

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Besides the fetal weight index, the femoral length index is one of the necessary parameters to help the mother know the development status of the fetus in the womb. The doctor can measure the length of the femur from the 14th week of pregnancy, to the 30th week of pregnancy, what is the average fetal femur length?

1. How normal is the femoral length index of a 30-week-old fetus?


Fetal femoral length index - FL index is an index calculated by week of age, from the 14th week of pregnancy, doctors can measure the length of the fetal femur. This index is one of the necessary parameters to be measured during each periodical antenatal check-up to assess the normal development of the fetus while in the womb.
Below is the index of normal femur length of the 30-week-old fetus in mm:
30-week-old fetus: femur length is between 53-63, the average value is 56 mm 30 weeks 1 day old baby: femur length between 53-63, mean value 57 mm 30 weeks 3 days old fetus: femur length between 236-296, mean value is 265mm Fetal 30 weeks 4 days old: femur length between 238-299, mean value is 269mm Fetal 30 week 5 days old: femur length is between 240-303, mean value is 272mm Fetal 30 weeks 6 days old: femur length is between 243-307, mean value is 275mm When fetus has only If the length of the femur is normal, mothers can rest assured to relax to welcome the birth of their baby.

2. Main factors affecting fetal femur length

There are many factors affecting the length of the fetal femur when in the womb, but there are 4 main factors as follows:
Genetic factors: Is one of the factors that determine the length of the fetal femur. children, usually about 23%. This means that tall parents are more likely to have tall children. Nutrition: When in the womb, the fetus' nutrition is completely provided by the mother, so the mother's nutrition plays a very important role in the development of height, weight, and height. child's femur length in the future.

Mẹ ăn uống theo chế độ dinh dưỡng tốt cho thai nhi
Mẹ ăn uống theo chế độ dinh dưỡng tốt cho thai nhi


Living environment: According to a study in the US, mothers living in a polluted environment, the weight and height of their children will be reduced by about 9% compared to mothers living in a green environment, clean and fresh air. Therefore, mothers need to keep the house and surrounding environment clean and avoid exposure to polluted air. Bad habits: Staying up late, drinking a lot of soft drinks, coffee, beer, alcohol or smoking is one of the bad habits that directly affects the development of the fetus.

3. What should mothers do when the fetus is 30 weeks old?


All pregnant mothers want their children to be healthy and develop comprehensively in terms of weight, height and health. To do so, mothers need to do the following:
At 30 weeks of pregnancy, mothers should supplement with foods rich in protein, vitamins C, D, calcium, folic acid,... to help the fetus. The fetus in the womb is developed healthy and avoids heartburn during pregnancy. Mothers need to drink enough water every day, have regular antenatal check-ups, especially in the last 3 months of pregnancy. Avoid using foods and drinks that affect the health of mother and baby such as cakes, canned foods, alcoholic or stimulant drinks. In summary: Fetal femur length is an important indicator, it directly affects the height and development of the child later. Therefore, at each week of age, when the fetal indexes including the femur length index are within the allowable limits, the fetus will develop normally until it is born.
Maternity packages at Vinmec International General Hospital include necessary newborn tests and screenings, protecting mother and baby's health before, during and after birth. Depending on the stage of pregnancy, pregnant women will be consulted by the doctor for appropriate fetal ultrasound to check the development status of the baby. Maternity packages at Vinmec International General Hospital include:
Maternity package 12 weeks Maternity package 27 weeks Maternity package 36 weeks Maternity package - labor.

Please dial HOTLINE for more information or register for an appointment HERE. Download MyVinmec app to make appointments faster and to manage your bookings easily.

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