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Cranial perimeter in newborns

Cranial perimeter in newborns


Question:

- My 3-week-old boy has a very small girl font (5 mm); Mrs. doctor told me not to give her Vigantol anymore, and we would measure her head circumference every month. What about the problem? Thank you in advance.

Answer:

At the level of the skull, the anterior fontanella, which at birth has a normal size of 2.5 / 5 will shrink, to close between 9-18 months.

At the level of the skull, the anterior fontanella, which at birth has a normal size of 2.5 / 5 will shrink, to close between 9-18 months.
The posterior fontanella may be closed at birth or, if it exists, it will be closed within the first 3-4 weeks.
The cranial perimeter is a parameter to be appreciated when the balance of somatic growth and development is made.
It is measured with the metric ribbon at the level of the frontal bumps and the occipital protuberance. The cranial perimeter at birth is on average 35 cm in normal term newborns. The rate of growth of the cranial perimeter in the first year of life is as follows:

  • 2 cm in the first trimester;
  • each 3 cm in quarters II, III, IV.
    The cranial perimeter is 45-46c
    m at 1 year, 48cm at 3 years, 50cm at 5 years and 55cm at 15 years.
    The evolution of the skull perimeter in the first years of life is parallel to the development of the contents of the skull-brain box. For this reason, tracking its evolution in the first year of life is mandatory.
    Parallel to the follow-up of the cranial perimeter, it is necessary to follow the evolution of the fontanels and sutures, at the level of these areas realizing the growth of the cranial bones.
    As for your case, your family doctor has discontinued the administration of Vigantol, in order not to hurry the fontanelle closing, necessary for the expansion of the skull box with its contents - the brain.
    You do not have to worry about it, but only to make its monthly measurements, in order to capture in time the possible changes - microcephaly (it is not always pathological) that must be accompanied, when further investigations of psychomotor evaluation occur.