Prevalence and characteristics of Positional OSA, a retrospective study
DOI:
https://doi.org/10.34631/sporl.1065Keywords:
Obstructive sleep apnea, OSA, PositionalAbstract
Objectives: To compare the prevalence of Positional Obstructive Sleep Apnea (P-OSA) based on different definitions and to identify the main factors independently associated with P-OSA and exclusive POSA (Pe-OSA).
Study Design: Retrospective study.
Material and Methods: Analysis of the type 3 polysomnography (PSG) recordings of adult patients performed between 2020 and 2021 at the Otorhinolaryngology Department of Hospital Garcia de Orta. P-OSA was defined by APOC criteria and Pe-OSA was defined as APOC I.
Results: 245 PSG were evaluated, with a mean age of 57 years and 64.9% of male patients. The prevalence of P-OSA was 55.5%, 38% of whom had Pe-OSA. Patients with P-OSA were younger (OR=0.971), slept mostly in the supine position (OR=1.031), had lower Body Mass Index (BMI) (OR=0.882), Apnea/Hypopnea Index (AHI), oxygen desaturation index (OR=0.964), mean desaturation drop, and shorter snoring time (p<0.05). The most significant predictors of Pe-OSA were a lower oxygen desaturation index (OR=0.879) and longer time in the supine position (OR=1.031).
Conclusions: Patients with P-OSA and Pe-OSA are younger, less obese and have less severe conditions, being respectively candidates for improvement or resolution of their disease using positioners.
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