Abstract
ISEE-280 Introduction/Aim: We aimed to investigate the effects of Asian dust events on diurnal variations of peak expiratory flow rate (PEFR) in children with bronchial asthma and healthy children. Methods: The 29 asthmatic children, who had been diagnosed in Seoul National University Hospita,l and 88 non-asthmatic elementary school children, were recruited. Daily respiratory symptoms and PEFR of each child were evaluated and recorded in the diary for 53 successive school days. Baseline questionnaires and pulmonary function test, were evaluated. We investigated whetherpeak expiratory flow rate was decreased during the period of Asian dust events. Results: PEFR was decreased significantly in 3 (10.3%) asthmatic children during the period of Asian dust events, but not different in the case of 3 (3.3%) healthy children (p=0.16). Conclusion: This study suggests that pulmonary function of asthmatic children was affected more when compared with healthy children, during the period of Asian dust events. Furthermore, we will construct linear mixed model to adjust the effects of outdoor air pollutants. *This study was supported by the Ministry of Environment, Republic of Korea (Eco-technopia 2003)
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