[原著]沖縄地方の喘息 : 喘息発作の季節性
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概要
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Patients with asthma attack in the outpatient clinic of the Naha Municipal Emergency Hospital were investigated on the seasonal variation of attack as well as their age, sex and febrile status. In the period from January through December 1979, 33309 patients consulted the internal medicine and pediatric clinic of the hospital and 11.5% them were occupied by patients with asthma attack. Among them almost half(48.7%) were children under 10 years old and the decrease of incidence was observed in the group of children 11 years old and upwards. Male patients were 1.4 times more then female. Febrile patients were seen in 12.5% of all cases, particularly 24.4% of children under five years old. It is assumed that asthma attack may be provoked frequently by certain infections in children. The incidence of asthma attack showed a remarkable difference according to the season. A high incidence was seen in spring, autumn and winter, the highest incidence on months of April and May. A striking decrease of incidence was observed oh months of June, July and August. In comparison with other prefectures of the mainland, it was noticed that no increase was seen in June in Okinawa unlike other prefectures and the incidence was higher in spring than in autumn. In order to clarify the seasonal variation of asthma.attack especially differences to that of other prefectures, further studies on patients under surveillance will be performed for elucidating factors in relations to the meteorological and botanical characteristics particularly pollen analysis in Okinawa.
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