Management of acute loss of asthma control: yellow zone strategies

Purpose of review Asthma exacerbations are associated with a significant burden to both the individual patient and to the healthcare system. Patients often step-up home therapies in response to increased asthma symptoms, and the asthma action plan was created to empower patients to self-manage their asthma care. The yellow (intermediate) zone of the asthma action plan is frequently poorly defined, and current Expert Panel Report 3 guideline recommendations are not effective for all patients. This article reviews the evidence behind various recommended yellow zone intervention strategies. Recent findings There are many potential methods of delivering yellow zone therapy, and recent studies have assessed preventive efficacy of a scheduled increase in controller medication(s), reliever medication(s), or a symptom-driven combination of both. The literature suggests that, in certain asthma subpopulations, some methods may be more efficacious than others. Summary Multiple yellow zone approaches may be beneficial, and the yellow zone is not a 'one size fits all' narrative.

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