8-month-old baby development standard

New mothers are still relatively unskilled in taking care of their babies at the beginning, and they always don’t know how to take care of them better. Therefore, they should closely observe the development of their babies. If they find that they do not meet the normal development standards, they should take active measures. Usually in the first year after birth, you will find that your baby’s height grows fastest, and will quickly reach more than three times the height at birth.

Fontanelle

The skull of children under one year old has not yet developed fully, and there are still cracks between the bones of the head.

In the front center of the top of the head, there is a diamond-shaped gap with an oblique diameter of about 2.5 cm. It is medically called the anterior fontanelle. A few months after birth, the anterior fontanelle of the baby's head circumference changes as the anterior fontanelle closes, reflecting the ossification process of the skull. Through it, some pathological changes in children can be observed. It is abnormal for the anterior fontanelle to close too early or too late. If it closes too early, microcephaly may occur; if it closes too late, rickets, cretinism or hydrocephalus may occur. If it is too full, it is a sign of increased intracranial pressure and an important sign of meningitis and encephalitis.

The posterior fontanelle is formed by the junction of the parietal and occipital bones. Located at the back of the head, it is usually closed at birth and at the latest at 2 to 4 months.

Height (length) refers to the sum of the lengths of the head, torso and lower limbs. The proportions of the three are different in different stages of the baby.

The younger you are, the larger the ratio of your head to your upper body. As you age, your lower body will grow faster than your upper body.

The average length of a baby at birth is about 50cm.

The height (length) grows fastest in the first year, with an average monthly increase of 2.5cm from 1-6 months, and an average monthly increase of 1.5cm from 7-12 months. At one year old, the baby is about 25cm taller than at birth, which is 1.5 times the height at birth.

In the second year after birth, the baby's height growth rate begins to slow down, only increasing by 10-12 cm throughout the year.

From the age of 2 until before puberty, the baby's height increases by an average of 6-7cm each year.

2-7 years old baby height calculation formula = age × 5 + 75cm

Tips

When measuring your baby's height (length), take off his shoes, hat and socks.

It is best to measure your height (length) in the morning so that the data obtained will be more accurate.

Small and uncooperative babies can be measured in a lying position. When measuring, make sure your knees are straight and someone has their head fixed with hands.

Boys of the same age have a slight advantage in height (length) over girls. Monoparticles, such as bottle, bath, ball, drink water.