Is Free Running Asthma Screening Test still useful?

Area of Science:

• Pediatric Pulmonology
• Allergy and Immunology
• Sports Medicine

Background:

• Exercise-induced bronchospasm (EIB) is a common condition in children, often underdiagnosed, particularly in rural settings.
• Accurate diagnosis of EIB is crucial for effective management and improving quality of life.
• Traditional diagnostic methods may be inaccessible in resource-limited areas.

Purpose of the Study:

• To assess the utility of the Free Running Asthma Screening Test (FRAST) for diagnosing EIB in rural pediatric populations.
• To compare FRAST results with children's self-reported history of asthma.
• To evaluate FRAST's effectiveness in areas lacking specialized medical personnel and equipment.

Main Methods:

• A FRAST challenge, involving a 6-minute exercise protocol, was administered to 268 children across 9 schools.
• Peak Expiratory Flow Rate (PEFR) was measured pre- and post-exercise using a mini-Wright peak-flow-meter.
• A >15% drop in PEFR indicated EIB, with results compared against parental questionnaires on asthma symptoms.

Main Results:

• Eleven out of 268 children (approx. 4.1%) showed a PEFR drop of ≥15% post-exercise, indicative of EIB.
• Of those with positive EIB results, 8 children were previously undiagnosed, underscoring the test's diagnostic potential.
• No significant differences in EIB prevalence were observed based on age, gender, or geographical altitude.

Conclusions:

• FRAST serves as a valuable, accessible tool for diagnosing EIB in children, especially in rural or underserved regions.
• The study confirmed a low correlation between reported asthma symptoms and objective EIB findings from exercise challenges.
• FRAST can aid in identifying children with EIB who may otherwise go undiagnosed due to limited access to healthcare resources.