Tracking FeNO: Have we found a new objective measure to help physicians tailor asthma therapies?

Asthma is one of the most widespread diseases on the planet.1 But when it comes to treatment and management, control has been difficult to accomplish for many. The common method for adjusting an asthma control regimen is stepwise—using easily apparent markers like frequency of symptoms, use of rescue medication, and asthma attacks.2,3