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Postnatal Head Growth in Very Premature Infants with Good Outcome

Postnatal head growth was examined retrospectively in 118 infants (male 60, female 58) born with a gestational age of from 24 to 29 weeks. Infants fulfilled the following criteria: (1) Those with hydrocephalus and small for dates (‐1.5 standard deviation) were excluded. (2) Infants had normal intelligence and no cerebral palsy or epilepsy at 3 years of age or above. They were divided into four groups according to gestational ages: 24–26 wks (n = 21), 27 wks (n = 25), 28 wks (n = 41) and 29 wks (n = 31). The head circumference was measured at least twice monthly. The head growth curves in each group were obtained. After a transient decrease, head growth averaged 1.1‐1.2 mm/day from day 21–30 to day 61–70 in all groups. From day 61–70 to 91–100 head growth averaged 1.2 mm/day at 24–26 wks and 0.8 mm/ day at 27–29 wks, respectively.