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  • Title: Off-line fractional exhaled nitric oxide measurement is useful to screen allergic airway inflammation in an adult population.
    Author: Saito J, Sato S, Hasunuma H, Ishimaru Y, Kanegae H, Kudo S, Munakata M.
    Journal: J Asthma; 2007 Dec; 44(10):805-10. PubMed ID: 18097854.
    Abstract:
    To determine whether off-line fractional exhaled nitric oxide (FeNO) measurement is applicable to screen allergic airway inflammation for epidemiologic studies, we examined 280 adults, measuring off-line FeNO samplings, pulmonary function, and serum immunoglobulin E (IgE). Subjects with recurrent wheeze (recurrent wheezers) had significantly higher FeNO and IgE levels and significantly lower forced expiratory volume in 1 second/forced vital capacity (FEV1/FVC) than non-wheezers. Statistical analysis showed that FeNO and FEV1/FVC were significant predictors for recurrent wheezers, independent of smoking. The cut-off FeNO level for screening allergic airway inflammation was 38 ppb in non-smokers and 32.9 ppb in smokers. Thus, off-line FeNO can be used as a good marker to screen allergic airway inflammation, regardless of smoking.
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