| A Study on the Seasonal Occurrence of Asthma in Children. |
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gung ran nam, Kee Young Lee, Duk Jin Yun |
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Department of Pediatrics，Yonsei University College of Medicine, Seoul，Korea |
| 소아천식의 계절별 발생에 관한 연구 |
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남궁란, 이기영, 윤덕진 |
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연세대학교 의과대학 소아과교실 |
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| Abstract |
Well known predisposing factors of asthmatic attack are emotional factors, autonomic
nerve dysfunctions, immunologic factors, endocrinologic factors and respiratory tract infections.
In addition, environmental factors are also important. Meteorological factors-temperature, air
pressure, relative humidity-seem to be the main triggering agents.
According to our clinical experience, the hospital admission rate of asthmatic children is
higher in certain seasons than in other seasons. In response to this observation, a study was
conducted to determine the effects of weather and respiratory tract infections on the occurrence
of asthmatic children in the department of Pediatrics at Severance Hospital, Yonsei Unive-
rsity, College of Medicine from Jan. 1976 to Dec. 1980. Meteorological data was supplied by
the Central Meteorological Office, Seoul, Korea.
Results
were as follows;
1. The admission rate of asthmatic children was higher in Autumn (10.8%) than in other
seasons.
2. The monthly admission rate of asthmatic children was the highest in September (5.3
%) and the lowest in January (0.3%).
3. During the period of rapid decrease of temperature from the highest monthly mean
temperature in a year, the admission rate of asthmatic children was the highest. The mon-
thly mean temperature of this period was under 18.6°C (16〜21OC).
4. The admission rates of asthmaftic children are tend to be increased at the monthly mean
relative humidity range of 66〜72% (the average 67.2%).
5. During the period of an increase of monthly average range of temperature, the admission
rate of asthmatic children is also increased.
6. During the period of rapid fluctuation of air pressure, the admission rate of asthmatic
children is also increased.
7. There was no significant correlation between asthmatic attacks and respiratory infections.
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| Key Words:
Asthma, Seasonal Occurrence |
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