Cold air challenge and specific airway resistance in preschool children

Area of Science:

• Pediatric Pulmonology
• Respiratory Medicine
• Asthma Research

Background:

• Asthma outcomes like lung function and bronchial hyperresponsiveness are established in early childhood.
• Early, objective assessment is crucial for diagnosing, monitoring, and improving prognosis in preschool children with asthma.

Purpose of the Study:

• To review the methodology and practical aspects of cold air challenge and specific airway resistance (sRaw) assessment in preschool children.
• To highlight the feasibility of these methods for early diagnosis, clinical monitoring, and research in pediatric asthma.

Main Methods:

• Utilized cold air challenge and plethysmographic measurement of specific airway resistance (sRaw).
• Reviewed methodology for assessing lung function and bronchial hyperresponsiveness in preschool children.
• Provided reference values for sRaw to differentiate between healthy children and those with respiratory disease.

Main Results:

• Cold air challenge and sRaw measurement are feasible for preschool children.
• Reference values for sRaw effectively discriminate between health and respiratory disease in cross-sectional and longitudinal studies.
• Bronchial hyperresponsiveness assessment shows acceptable repeatability and good discrimination between asthmatic and healthy children.

Conclusions:

• Cold air challenge and sRaw are valuable tools for objective assessment in preschool children.
• These methods aid in early asthma diagnosis, monitoring therapeutic effects, and improving long-term outcomes.
• Further standardization and improvement of these techniques are needed for future pediatric respiratory research.