Exhaled nitric oxide concentration is affected by age, height, and race in healthy 9- to 12-year-old children
Background: The fractional concentration of exhaled nitric oxide (FENO) is a useful indicator of airway inflammation in children and adults with asthma. Methods: We determined the range of FENO concentrations and the factors affecting it in a large sample of healthy school children attending grades 4 through 6, in Windsor, ON, Canada. Results: FENO was…







