Factors affecting ventilatory function in the child with asthma

Abstract

Observations were made on 30 asthmatic children living away from home to ascertain the relative importance of various factors in causing asthmatic attacks, clinical observations being combined with regular recordings of the forced expiratory volume in one second. The most potent of the factors investigated was the effect of the change of environment from home to school and vice versa, other factors such as weather changes, events of interest and importance to the children, and upper respiratory infections having much less effect.