Normal closing time of fontanel
Under normal circumstances, when the baby is born, the posterior fontanel is very small or closed, which can only accommodate the size of a fingertip, and it will be closed at the latest 6 ~ 8 weeks after birth. The oblique diameter of the anterior fontanelle at birth is about1.5 ~ 2.5 cm. After birth, with the development of the head, the head circumference gradually increases, and the anterior fontanel will also increase. Six months after birth, with the gradual ossification of the skull, it gradually becomes smaller and usually closes at 1 year ~1year and a half.
Extended data
Emergency treatment
1, if it is an open skull fracture or brain tissue has been exposed, attention should be paid to prevent infection. You can cut off the hair within 5 cm around the wound and gently cover it with sterile gauze. Don't take out the dirty things in the wound without authorization to avoid spreading infection.
2, the handling of cerebrospinal fluid must be careful, never block the nasal cavity and ear canal, nor rinse with water or drip medicine into the ear and nose, but let it flow. Because cerebrospinal fluid, together with blood, has been polluted when it flows through unclean nasal cavity and ear canal,
? If it is blocked with cotton and other substances, it is easy to cause intracranial infection when the liquid flows back into the brain, leading to meningitis, brain abscess and other serious consequences, and even death. At the same time, patients should be warned not to blow and cough hard, not to wipe or touch the external auditory canal, but to rinse their mouths and keep their mouths clean. 3, should let the patient's head in a high position, can raise the head of a bed15 ~ 30 degrees, so as to avoid intracranial infection or pneumatosis.
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