Effective management of home exacerbations (yellow zone) of asthma.

The NIH guidelines recommends hat practitioners give asthmatics written action plans with instructions on management of home (yellow zone) exacerbations. There is ambiguity regarding the definition of the yellow zone in patient-appropriate terms, and paucity of data on the efficacy of the different pharmacological interventions that can be used. This article reviews available data and attempts to incorporate these guidelines into clinical practice.