Guideline-Recommended Fractional Exhaled Nitric Oxide Is a Poor Predictor of Health-care Use Among Inner-city Children and Adolescents Receiving Usual Asthma Care

摘要

Background:American Thoracic Society guidelines support using fractional exhaled nitric oxide (Feno) measurements in patients with asthma and highlight gaps in the evidence base. Little is known about the use of Feno levels to predict asthma exacerbations among high-risk, urban, minority populations receiving usual care.