The study hypothesizes that objective lung function tracking at-home, using a portable spirometer in addition to conventional symptom monitoring (in which asthmatic patients self-report and track their own symptoms), will result in more reliable detection of exacerbation in children 6-15 years old with asthma.
This is a 44-week, single arm, blinded nonrandomized trial to determine clinically relevant ranges in FEV1% predicted that correlate with the Yellow Zone of the Asthma Action Plan.
A total of 100 pediatric subjects (between the ages of 6 and 15 years old) with physician-diagnosed mild or moderate persistent asthma treated on controller therapy will be enrolled from the ED, Inpatient Units, Pulmonary Medicine Clinic, and Allergy/Immunology Clinic at UCSF Benioff Children's Hospital San Francisco.
Primary Specific Aim
To determine the FEV1% predicted changes that correspond with a change from the Green to Yellow Zone.
The primary outcome will be Yellow Zone episodes, as identified by the occurence of any of the following:
Symptom Diary score \> 4 ATAQ score \> 1
Secondary Specific Aim
To determine the FEV1% predicted changes that correspond with a change from the Yellow to Red Zone.
The secondary outcome will Red Zone episodes, as identified by the occurence of any of the following:
ED or Urgent Care visit Administration of systemic (oral, IM, or IV) corticosteroids Hospitalization
