Elevated fractional exhaled nitric oxide (FeNO) levels can help assess asthma severity, daytime symptoms, airflow limitation, and β-agonist responsiveness in children and adolescents, according to a retrospective study presented here at the American Academy of Allergy, Asthma and Immunology 2010 Annual Meeting.  “It was very clear,” Summer Monforte, MD, pediatric resident at Children’s Hospital in [...]