Small Airway Dysfunction Assessed by Impulse Oscillometry in Children with Congenital Adrenal Hyperplasia: A...

Area of Science:

• Pediatric Pulmonology
• Pediatric Endocrinology
• Respiratory Physiology

Background:

• Congenital adrenal hyperplasia (CAH) involves hormonal imbalances and prolonged glucocorticoid use, potentially impacting lung function.
• Small airway function in children with CAH remains under-investigated.
• This study explores pulmonary physiology in pediatric CAH patients.

Purpose of the Study:

• To evaluate small airway function in children with CAH using impulse oscillometry system (IOS).
• To compare IOS findings between children with CAH and healthy controls.
• To identify potential subclinical pulmonary involvement in pediatric CAH.

Main Methods:

• Cross-sectional case-control study involving 27 children with CAH and 27 age/sex-matched healthy controls.
• Impulse oscillometry system (IOS) was used to measure parameters like R5, R20, R5-R20, X5, X20, AX, and Fres.
• Demographic, clinical, laboratory, and treatment data were collected for all participants.

Main Results:

• Children with CAH showed significantly higher R5, R5-R20, and AX values, and more negative X5 values compared to controls (p<0.05).
• Abnormal IOS findings were most common for X5 (29.6%), R5-R20 (25.9%), and R5 (22.2%).
• No significant differences were found in R20, X20, and Fres between groups.

Conclusions:

• Pediatric patients with CAH exhibit IOS evidence of subclinical small airway dysfunction.
• IOS serves as a sensitive method for early detection of small airway disease in pediatric CAH.
• Further research with larger cohorts is recommended to confirm these findings.