Pulmonary dysfunction in overweight and obese children with obstructive sleep apnoea

Area of Science:

• Pediatric Pulmonology
• Sleep Medicine
• Obesity Research

Background:

• Overweight and obese children face increased risks for obstructive sleep apnea (OSA) and abnormal pulmonary function (PF).
• Understanding the interplay between weight, OSA, and lung health in children is crucial for early intervention.

Purpose of the Study:

• To investigate the relationship between body mass index (BMI), obstructive sleep apnea (OSA), and pulmonary function (PF) in children.
• To determine if OSA severity or BMI is a stronger predictor of impaired lung function.

Main Methods:

• Seventy-four children were assessed for OSA severity using the mixed obstructive apnea-hypopnea index (MOAHI).
• Measurements included BMI, oxygen saturation (SpO2), forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and fractionated exhaled nitric oxide (FeNO).

Main Results:

• Children with mild OSA (n=24) and moderate-to-severe OSA (n=30) showed significant pulmonary function abnormalities.
• BMI negatively correlated with SpO2 nadir (r=-.363, p=.001).
• FVC, FEV1, and nadir SpO2 decreased with increasing OSA severity (p<.001), with OSA increasing odds of abnormal spirometry by 3.16 times.

Conclusions:

• Overweight and obese children with OSA exhibit significant pulmonary function abnormalities, independent of BMI.
• OSA severity and elevated FeNO are associated with diminished lung function in pediatric populations.