Article: Measurement of offline exhaled nitric oxide in a study of community exposure to air pollution.(Environmental Medicine)

As part of a large panel study in Seattle, Washington, we measured levels of exhaled nitric oxide (eNO) in children's homes and fixed-site particulate matter with aerodynamic diameters of 2.5 [micro]m or less ([PM.sub.2.5]) outside and inside the homes as well as personal [PM.sub.2.5] during winter and spring sessions of 2000-2001. Nineteen subjects 6-13 years of age participated; 9 of the 19 were on inhaled corticosteroid (ICS) therapy. Exhaled breath measurements were collected offline into a Mylar balloon for up to 10 consecutive days. Mean eNO values were 19.1 (SD [+ or -] 11.4) ppb in winter sessions and 12.5 [+ or -] 6.6 ppb in spring sessions. Fixed-site ...

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