alexa Correlation between Asian dust storms and worsening asthma in Western Japan.
Pulmonology

Pulmonology

Journal of Pulmonary & Respiratory Medicine

Author(s): Watanabe M, Yamasaki A, Burioka N, Kurai J, Yoneda K,

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Abstract BACKGROUND: Severe wind storms during spring in East Asia, called Asian dust storms (ADS), have been assessed in the past for their effect on health in Asian countries. Our objective was to study the ADS association with asthma symptoms in adult patients in Japan. METHODS: We designed a telephone survey to assess ADS influence on upper and lower respiratory, ocular and cutaneous symptoms in 98 patients with adult asthma from April to May 2007. Peak expiratory flow (PEF) was also measured from February to May. RESULTS: Worsening lower respiratory symptoms were noted by 22 of 98 patients during ADS in April, when Japanese cedar pollen levels also increased. During ADS in May, however, Japanese cedar and cypress pollen levels were not elevated, 11 patients had worsening of lower respiratory symptoms. None required emergency treatment for the exacerbation. Lower respiratory symptoms worsening most were cough and sputum; this was more common in patients with allergic rhinitis or atopy than in those without (P < 0.05). Min\%Max differed significantly at 88.7 ± 6.6\% during dust dispersion period, defined as the ADS day plus the next 6 days, versus 92.0 ± 5.3\% during the 7-day period before a dust storm. CONCLUSIONS: We found that ADS aggravated lower respiratory symptoms in adult patients with asthma, but this influence was mild. This article was published in Allergol Int and referenced in Journal of Pulmonary & Respiratory Medicine

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