Prevalence and characteristics of Positional OSA, a retrospective study

• Autor(a) principal: São Pedro, Ricardo
• Data de Publicação: 2023
• Outros Autores: Ferreira, Filipa, Santos, Cláudia, Teixeira, Henrique, Rosa, Helena, Santos, Mário, Antunes, Luís
• Tipo de documento: Artigo
• Idioma: eng; por
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://doi.org/10.34631/sporl.1065
• topic: Síndrome de Apneia Obstrutiva do Sono; SAOS; Posicional; Obstructive sleep apnea; OSA; Positional

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.