Acute effects of volcanic ash from Mount Saint Helens on lung function in children

A. S. Buist, L. R. Johnson, W. M. Vollmer, G. J. Sexton, P. H. Kanarek

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Abstract

To evaluate the acute effects of volcanic ash from Mt. St. Helens on the lung function of children, we studied 101 children 8 to 13 yr of age who were attending a 2-wk summer camp for children with diabetes mellitus in an area where about 1.2 cm of ash had fallen after the June 12, 1980, eruption. The outcome variables used were forced vital capacity, forced expiratory volume in one second, their ratio and mean transit time. Total and respirable dust levels were measured using personal sampling pumps. The children were tested on arrival and twice (early morning [A.M.] and late afternoon [P.M.]) every second or third day during the session. A within-day effect was measured by the P.M./A.M. ratio for the lung function variables; a between-day effect was measured by the change in the P.M. measurements over the 2 wk of camp. We found no strong evidence of either a within-day or a between-day effect on lung function, even in a sub-group of children who had preexisting lung disease or symptoms, despite daytime dust/ash levels that usually exceeded the Environmental Protection Agency's significant harm level for particulate matter.

Original languageEnglish (US)
Pages (from-to)714-719
Number of pages6
JournalAmerican Review of Respiratory Disease
Volume127
Issue number6
StatePublished - Jul 29 1983

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ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Buist, A. S., Johnson, L. R., Vollmer, W. M., Sexton, G. J., & Kanarek, P. H. (1983). Acute effects of volcanic ash from Mount Saint Helens on lung function in children. American Review of Respiratory Disease, 127(6), 714-719.