Forced expiratory values in 1 second corresponding to Pediatric Respiratory Assessment Measure and Acute Asthma Intensity Research Score values during pediatric acute asthma exacerbations

Acute asthma exacerbations are one of the most frequent reasons for emergency department (ED) visits and hospitalizations. Expert panel guidelines recommend measurement of percent-predicted forced expiratory volume in 1 second (FEV1) or peak expiratory flow for exacerbation severity assessment and treatment decision making.1 These guidelines categorize exacerbation severity according to percent-predicted FEV1 as mild to moderate (FEV1 ≥40%) and severe (FEV1 <40%), but acute care facilities that treat pediatric exacerbations generally do not have the equipment or personnel for such measures of lung function.

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