[Obesity in childhood: What are the respiratory risks?]

Area of Science:

• Pediatrics
• Respiratory Medicine
• Obesity Research

Background:

• Overweight in children is defined as a BMI above the 97th percentile, affecting an estimated 25% in France.
• Obesity in youth is multifactorial, influenced by genetics, prenatal factors, and societal determinants.
• Obesity negatively impacts respiratory function, notably decreasing FEV1/FVC ratios.

Purpose of the Study:

• To review the respiratory complications associated with childhood and adolescent obesity.
• To highlight the association between obesity and asthma control.
• To discuss the prevalence and management of obstructive sleep apnea syndrome (OSAS) and obesity-hypoventilation syndrome (OHS) in obese youth.

Main Methods:

• Literature review of studies on childhood obesity and respiratory outcomes.
• Analysis of the impact of Body Mass Index (BMI) on asthma control.
• Description of diagnostic criteria and treatment options for OSAS and OHS in pediatric populations.

Main Results:

• Obesity is linked to decreased FEV1/FVC and altered asthma characteristics, with less eosinophilic inflammation.
• Obstructive sleep apnea syndrome (OSAS) affects up to 80% of obese children, presenting with cognitive and neurobehavioral issues.
• Obesity-hypoventilation syndrome (OHS) affects up to 20% of obese patients, requiring nocturnal ventilation.

Conclusions:

• Childhood obesity presents significant respiratory challenges, including asthma exacerbation and sleep-disordered breathing.
• Management strategies involve ENT surgery, CPAP for OSAS, and BiPAP for OHS, with bariatric surgery as an option in severe cases.
• Specialized pediatric centers are essential for managing these complex conditions.