脳性麻痺患者の出生季節について

Abstract

In the previous study, we found that children at risk of cerebral motor disturbances were frequently born in fall and winter, and required a longer training period. These findings suggested that improvement in the home environment early after birth might be useful in reducing the degree of cerebral palsy. Therefore, birth seasons were re-examined in children aged 2 years or over The subjects consisted of 430 children with cerebral palsy caused by factors at birth during the neonatal period who visited 3 institutions in Kyoto and Shiga prefectures. The number of children born in June was distinctively the greatest. However, if winter is defines as the period from October to March, the number of children born in winter was slightly greater than that of those born in summer, and the incidence of cerbral palsy was higher in winter. The factors frequently found in those born in winter were: (1) low birth weght (<1500g), (2) Ataxia, and (3) begin to walk after 3 years of age. Especially, of 11 children who began to walk after 5 years of age, 6 began training before 1 year of age. 5 of the 6 were born in winter.