Cut points for Asthma Control Tests in Mexican children in Orange County, California.

Background: The Childhood Asthma Control Test (C-ACT) and the Asthma Control Test (ACT) are validated measures of asthma control in which a score of 19 is defined as uncontrolled according to published reports. However, different cut points may exist in different ethnic populations.

Objective: To determine the cut point for uncontrolled asthma in a Mexican descent population from Orange Country, California, compared with an age- and asthma severity-matched non-Hispanic cohort.

Relating small airways to asthma control by using impulse oscillometry in children.

Background: Previous reports suggest that the peripheral airways are associated with asthma control. Patient history, although subjective, is used largely to assess asthma control in children because spirometric results are many times normal values. Impulse oscillometry (IOS) is an objective and noninvasive measurement of lung function that has the potential to examine independently both small- and large-airway obstruction.