Children PEFR = (.
The peak expiratory flow rate is the maximal rate that a person can exhale during a short maximal expiratory effort after a full inspiration. The Peak Expiratory.
Quantifies asthma exacerbation severity. Patients with much lower actual peak flow than estimated typically require further treatment of their asthma. Assessment of peak flow must not delay administration of critical treatments for acute asthma exacerbations.