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American Journal of Public Health, Vol. 73, Issue 1 50-56, Copyright © 1983 by American Public Health Association

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Effects of particulate air pollution on asthmatics.

G B Perry, H Chai, D W Dickey, R H Jones, R A Kinsman, C G Morrill, S L Spector and P C Weiser

Twenty-four asthmatic subjects in Denver were followed from January through March 1979, a three-month period in which Denver air pollution levels are generally high and variable. Dichotomous, virtual impactor samplers provided daily measurements (micrograms/m3) of inhaled particulate matter (total mass, sulfates, and nitrates) for coarse (2.5--15 micrograms in aerodynamic diameter) and fine fractions (less than 2.5 micrometers). Carbon monoxide, sulfur dioxide, ozone, temperature, and barometric pressure were also measured. Twice daily measurements of each subject's peak expiratory flow rates, use of as-needed aerosolized bronchodilators, and report of airways obstruction symptoms characteristic of asthma were tested for relationships to air pollutants using a random effects model across subjects. During the time actually observed, there were very few days in which high levels of suspended particulates were recorded. Of the environmental variables studied, only fine nitrates were associated with increased symptom reports and increased aerosolized bronchodilator usage.




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S. Goldberg, S. Schwartz, G. Izbicki, R. B. Hamami, and E. Picard
Sensitivity of Exercise Testing for Asthma in Adolescents Is Halved in the Summer
Chest, October 1, 2005; 128(4): 2408 - 2411.
[Abstract] [Full Text] [PDF]


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Copyright © 1983 by the American Public Health Association