Spirometry and PRAM severity score changes during pediatric acute asthma exacerbation treatment in a pediatric...

Area of Science:

• Pediatric Emergency Medicine
• Respiratory Medicine
• Clinical Trials

Background:

• Acute asthma exacerbations are a common reason for pediatric emergency department visits.
• Monitoring treatment response in children with asthma requires sensitive and timely measures.
• Spirometry, specifically percent-predicted forced expiratory volume in 1 second (%FEV(1)), is a standard measure of lung function.

Purpose of the Study:

• To evaluate the time-dependent changes in %FEV(1) and the Pediatric Respiratory Assessment Measure (PRAM) during acute asthma exacerbation treatment.
• To compare the sensitivity of %FEV(1) and PRAM in detecting changes in asthma severity over time.

Main Methods:

• Prospective study of 503 pediatric patients (aged 5-17 years) with acute asthma exacerbations.
• %FEV(1) and PRAM scores were recorded at baseline, 2 hours, and 4 hours post-treatment initiation.
• Analysis focused on changes within the first (0-2 hours) and second (2-4 hours) 2-hour treatment intervals.

Main Results:

• Significant improvement in %FEV(1) was observed during the first 2 hours (+15.4%), but not during the subsequent 2 hours (+1.5%).
• The PRAM showed significant improvement during both the first (-2.1 points) and second (-1.0 point) 2-hour treatment periods.
• A total of 503 participants were included, with a median age of 8.8 years; 61% were male and 63% were African-American.

Conclusions:

• The majority of lung function improvement in pediatric asthma exacerbations occurs within the initial 2 hours of treatment.
• The PRAM demonstrates continued sensitivity to changes in clinical severity during the second 2-hour treatment period, unlike spirometry.
• Clinical severity scores like PRAM may be more responsive to acute changes in asthma severity than spirometry in pediatric patients.