Calculation of Predicted Peak Expiratory Flow in Children with a Formula

Background: To determine whether a child has asthma exacerbation, we should obtain the value of peak expiratory flow. It is useful in a diagnostic procedure, in evaluation of response to therapy and following the course of asthma.The context and purpose of the study: On the basis of published relations between body height and peak expiratory flow in children I developed a formula for calculation of predicted peak expiratory flow in children according to body height.