ArticleSleep & breathing = Schlaf & Atmung2020
Prevalence and characteristics of positional obstructive sleep apnea (POSA) in patients with severe OSA.
Article in Sleep & breathing = Schlaf & Atmung, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03232658 (The Severity Of Individual Breathing Cessation Events In Diagnostics Of Obstructive Sleep Apnea - Towards Enhanced And Individualized Estimation Of OSA Severity), which is not on this map. Cited by 22 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Severity Of Individual Breathing Cessation Events In Diagnostics Of Obstructive Sleep Apnea - Towards Enhanced And Individualized Estimation Of OSA Severity
Who cites it
22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.
- Comparative efficacy of sleep positional therapy, oral appliance therapy, and CPAP in obstructive sleep apnea: a meta-analysis of mean changes in key outcomes.Frontiers in medicine · 2025Pooled it
- Impacts of conservative treatment on the clinical manifestations of obstructive sleep apnea-systematic review and meta-analysis.Sleep & breathing = Schlaf & Atmung · 2024Pooled it
- Effect of lateral versus supine positioning on hypoxaemia in sedated adults: multicentre randomised controlled trial.BMJ (Clinical research ed.) · 2025Trial
- Apnea-hypopnea index estimation using overnight chest-wall accelerometry.Frontiers in sleep · 2026Article
- Clinical characteristics and outcomes of positional obstructive sleep apnea: the sleep heart health study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025Article
- Obstructive Sleep Apnea: Strategies for Screening, Management, and Overcoming Treatment Challenges in the Outpatient Setting.American journal of lifestyle medicine · 2025Review
- The role of positional changes in optimizing OSA treatment: evidence from DISE.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025Article
- Sleep Posture Detection via Embedded Machine Learning on a Reduced Set of Pressure Sensors.Sensors (Basel, Switzerland) · 2025Article
- Research progress on the clinical subtyping of obstructive sleep apnea hypopnea syndrome.Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2024Review
- The prevalence of obstructive sleep apnea in Japanese asthma patients.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2024Article
- Exploring the Impact of Positional Sleep Apnea in a Turkish Population: Unveiling the Untold Story.Medical science monitor : international medical journal of experimental and clinical research · 2023Article
- Pathophysiological mechanisms and therapeutic approaches in obstructive sleep apnea syndrome.Signal transduction and targeted therapy · 2023Review
- Associations of overnight changes in body composition with positional obstructive sleep apnea.Sleep & breathing = Schlaf & Atmung · 2023Article
- The Prevalence of Positional Obstructive Sleep Apnoea in a Sample of the Saudi Population.Journal of epidemiology and global health · 2023Article
- Preliminary study on clinical characteristics of Chinese patients with positional obstructive sleep apnea.Sleep & breathing = Schlaf & Atmung · 2022Article
- Validation Study of Airgo, an Innovative Device to Screen Sleep Respiratory Disorders.Frontiers in medicine · 2022Article
- Standardized framework to report on the role of sleeping position in sleep apnea patients.Sleep & breathing = Schlaf & Atmung · 2021Review
- Diagnosing narcolepsy in the active duty military population.Sleep & breathing = Schlaf & Atmung · 2021Article
- Review
- Role of drug-induced sleep endoscopy in evaluation of positional vs non-positional OSA.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
Abstract
purposeWe assessed the prevalence of positional patients (PPs) and the main predictors of positional dependency in severe obstructive sleep apnea (OSA). A simulated effect of positional therapy (PT) vs. continuous positive airway pressure (CPAP) was also assessed.
methodsPolysomnographic recordings of 292 consecutive patients with severe OSA (Apnea-Hypopnea Index (AHI) ≥ 30) who slept > 4 h and had ≥ 30 min sleep in both supine and lateral positions were assessed. PPs were defined to have a supine AHI/lateral AHI ratio ≥ two and non-positional patients (NPPs) a supine AHI/lateral AHI ratio < two.
resultsA total of 35.3% of the severe OSA patients were PPs. They were less obese and had less severe OSA (p < 0.001) compared with NPPs. The percentage of total apnea-hypopnea time from total sleep time (AHT%) was the most significant predictor for positional dependency. By sleeping in the lateral posture (i.e. after simulated PT), 78 (75.7%) PPs obtained significant improvement of their OSA severity and 9 (8.7%) of them became "non-OSA". Moreover, if CPAP was used only for 50% of total sleep time, 53 patients (18.2%) gained more benefit from avoiding the supine posture than from CPAP therapy.
conclusionsMore than a third of the studied severe OSA patients were PPs. These patients could achieve a significant decrease in the number and severity of apneas and hypopneas by adopting the lateral posture, suggesting that PT may be a valuable therapy for a significant portion of these severe OSA patients who for whatever reason are not being treated by CPAP. TRIAL REGISTRY: ClinicalTrials.gov Identifier: NCT03232658.
Indexed as
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.