Perception of dyspnea in childhood asthma crisis by the patients and those in charge of them.

Objective: To evaluate the correlation between perception of dyspnea during a mild to moderate asthma attack using the Modified Borg Scale (MBS) and peak expiratory flow rate (PEFR).

Methods: This was a cross-sectional study conducted with children and adolescents who sought a pediatric emergency service due to an asthma attack. Data were collected from July 2005 to June 2006.