Relationships between pulmonary function testing and polysomnography in adolescents with severe obesity

Area of Science:

• Pediatric Pulmonology
• Adolescent Medicine
• Sleep Medicine

Background:

• Severe obesity is rising in adolescents, increasing risks for respiratory compromise.
• Conditions like obstructive sleep apnea hypopnea syndrome (OSAHS) are common comorbidities.
• Limited research exists on pulmonary function tests (PFT) and polysomnography (PSG) in severely obese youth.

Purpose of the Study:

• To describe PFT and PSG findings in adolescents with severe obesity.
• To identify relationships between PFT and PSG variables in this cohort.
• To inform clinical practice regarding respiratory assessment in severely obese adolescents.

Main Methods:

• Retrospective analysis of 215 adolescents (ages 12-17) with severe obesity.
• Inclusion criteria: completed PFT and PSG between 2014-2018.
• Data collected: demographics, BMI, PFT, and PSG results; statistical analysis included multiple regressions.

Main Results:

• High prevalence of OSAHS (66%) in the cohort.
• Spirometry results were generally normal.
• Body plethysmography showed low-normal residual volume and expiratory reserve volume.
• Significant associations found between PFT parameters (especially TLC) and PSG abnormalities.

Conclusions:

• Adolescents with severe obesity exhibit significant respiratory abnormalities.
• Full PFT and PSG assessments are recommended for this population.
• Early detection and management of respiratory compromise are crucial.