EurekAlert! -- The level of nitric oxide (NO) in an asthmatic’s exhaled breath can portend worsening asthma symptoms, and may even signify an imminent attack linked to underlying airway inflammation. This has made the monitoring of NO levels, particularly in children, of significant interest as a potential way to help clinicians fine-tune medications and improve treatment outcomes. However, a recent multi-center prospective study found that calibrating medications based on daily monitoring of the fractional exhaled nitric oxide (FENO) and symptoms in asthmatic children showed no significant improvement over medicating based on daily symptom monitoring alone.
