22 peer-reviewed studies linked to Sleep Apnea (diagnostic code 6847) in the VA Ready app, sourced from PubMed and the U.S. National Library of Medicine. Every citation is real and links to the source — bring them to your C&P exam or hand them to your VSO.
Cohort studyPrimary2026
Burn Pit Smoke Exposure and Sleep Apnea in US Veterans: A Retrospective Cohort Study.Medical Care · 2026
- Examined association between burn pit smoke exposure and sleep apnea among US veterans
- Used VA Airborne Hazards and Open Burn Pit Registry
- Documents link between burn pit exposure and OSA prevalence
Why it matters: Direct evidence supporting service connection for OSA in burn-pit-exposed veterans under DC 6847; PACT Act
View on PubMed ↗Cohort studyPrimary2025
Insomnia and sleep apnea in the entire population of US Army soldiers: Associations with deployment and combat exposure 2010-2019, a retrospective cohort investigation.Sleep Health · 2025
- Entire active-duty US Army 2010-2019
- Deployment and combat exposure independently associated with elevated sleep apnea rates
- Large population-level OSA burden in deployed soldiers
Why it matters: Population-scale evidence that deployment is OSA risk factor, supporting direct service connection
View on PubMed ↗Cross-sectionalPrimary2025
Prevalence of Obstructive Sleep Apnea Among Veterans and Nonveterans.American Journal of Health Promotion · 2025
- Compared OSA prevalence among US veterans vs matched nonveterans
- Veterans showed significantly higher OSA prevalence
- Difference persisted after adjustment for demographics and BMI
Why it matters: Elevated baseline OSA burden in veteran population beyond nonveteran comparators
View on PubMed ↗Systematic reviewPrimary2025
Comparative Efficacy and Safety of Multiple Wake-Promoting Agents for the Treatment of Residual Sleepiness in Obstructive Sleep Apnea Despite Continuous Positive Airway Pressure: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials.CNS Drugs · 2025
- Even with adequate CPAP, residual daytime sleepiness is common and wake-promoting agents (solriamfetol, modafinil, armodafinil, pitolisant) are needed to treat it.
- Solriamfetol showed the greatest improvement in subjective (Epworth) and objective (maintenance of wakefulness) sleepiness measures.
- All four agents carried low risk of serious adverse events.
Why it matters: Documents that disabling symptoms (excessive daytime sleepiness) frequently persist despite optimal CPAP, directly supporting continued functional impairment and ratings even with treatment.
View on PubMed ↗Case-controlPrimary2024
Posttraumatic Stress Disorder and Obstructive Sleep Apnea in Twins.JAMA Network Open · 2024
- Vietnam Era Twin Registry to test PTSD-OSA association controlling for shared genetics and early environment
- PTSD severity associated with higher OSA prevalence within twin pairs
- Causal interpretation: PTSD increases OSA risk independent of familial confounders
Why it matters: Strongest available evidence for secondary service connection of OSA to PTSD
View on PubMed ↗Cohort studyPrimary2024
Long-term mortality risk in obstructive sleep apnea: the critical role of oxygen desaturation index.Sleep Breath · 2024
- Higher oxygen desaturation index (ODI) was an independent predictor of all-cause mortality (HR 1.007 per unit, 95% CI 1.001-1.013).
- ODI remained significant in multivariate analysis while AHI lost significance, suggesting nocturnal hypoxemia burden best predicts mortality.
- Deceased patients were older with higher waist-to-hip ratio, Epworth Sleepiness Scale, and systemic inflammation.
Why it matters: Speaks to prognosis and long-term mortality risk in OSA, showing objective severity metrics (hypoxemia burden) carry real survival consequences relevant to disability severity.
View on PubMed ↗Cohort studyPrimary2023
The effect of obstructive sleep apnea severity on PTSD symptoms during the course of esketamine treatment: a retrospective clinical study.Journal of Clinical Sleep Medicine · 2023
- More severe OSA attenuated PTSD response to esketamine
- OSA severity inversely correlated with PTSD improvement
- Bidirectional clinical interaction
Why it matters: OSA worsens PTSD treatment outcomes, reinforcing aggravation/secondary connection arguments
View on PubMed ↗Meta-analysisPrimary2023
Adherence to CPAP Treatment and the Risk of Recurrent Cardiovascular Events: A Meta-Analysis.JAMA · 2023
- In intention-to-treat IPD meta-analysis, CPAP did not reduce first major adverse cardiac/cerebrovascular events versus usual care (HR 1.01, 95% CI 0.87-1.17).
- On-treatment analysis showed good CPAP adherence (>=4 h/day) was associated with a 31% reduced risk of recurrent cardiovascular events (HR 0.69, 95% CI 0.52-0.92).
- Mean CPAP adherence in trials was low (3.1 h/day), underscoring that benefit depends on consistent use.
Why it matters: Demonstrates that OSA treatment benefit hinges on adherence and that cardiovascular risk persists with poor CPAP use, relevant to functional impact and persistence of disability despite prescribed therapy.
View on PubMed ↗Cohort studyPrimary2022
Obstructive sleep apnea among survivors of combat-related traumatic injury: a retrospective cohort study.J Clin Sleep Med · 2022
- OSA incidence was higher among combat-injured service members (29.1 per 1,000 person-years) than uninjured (23.9 per 1,000 person-years) over a median 8.4-year follow-up.
- Traumatic brain injury (HR 1.39), PTSD (HR 1.24), depression (HR 1.52), anxiety (HR 1.40), insomnia (HR 1.71), and obesity (HR 2.40) each independently predicted incident OSA.
- The combat-injury association with OSA was driven by TBI and the long-term mental-health sequelae of injury.
Why it matters: Directly supports a service-connection nexus by showing combat injury, TBI, and deployment-related mental-health conditions raise the longitudinal risk of developing OSA in veterans.
View on PubMed ↗ReviewPrimary2019
Estimation of the global prevalence and burden of obstructive sleep apnoea: a literature-based analysis.Lancet Respir Med · 2019
- An estimated 936 million adults aged 30-69 worldwide have mild-to-severe OSA (AHI >=5) and 425 million have moderate-to-severe OSA (AHI >=15).
- Prevalence exceeded 50% in some countries; the USA had the second-highest absolute burden after China.
- OSA is described as a disorder associated with major neurocognitive and cardiovascular sequelae warranting effective diagnosis and treatment.
Why it matters: Establishes that OSA is an extremely common, objectively-diagnosed condition affecting nearly a billion adults, supporting the plausibility and high base rate of OSA claims in the veteran age range.
View on PubMed ↗Cohort studySupporting2025
The impact of burn pit waste segregation practices on respiratory and cardiovascular health risks among US military veterans deployed to Iraq and Afghanistan.Environmental Health · 2025
- Veterans at bases with less stringent burn pit waste segregation had higher asthma and cardiopulmonary risk
- Dose-response/exposure-quality evidence
- Strengthens biological plausibility
Why it matters: Stronger PACT Act causation arguments by exposure-response gradient
View on PubMed ↗Cohort studySupporting2024
Deployment to Military Bases With Open Burn Pits and Respiratory and Cardiovascular Disease.JAMA Network Open · 2024
- Deployment to bases with open burn pits associated with higher asthma incidence
- Objective deployment exposure data combined with VA health records
- One of largest cohort studies directly linking burn pit deployment to asthma
Why it matters: High-quality direct evidence supporting PACT Act presumptive service connection for asthma
View on PubMed ↗ReviewSupporting2024
Current understanding of the impact of United States military airborne hazards and burn pit exposures on respiratory health.Particle and Fibre Toxicology · 2024
- Comprehensive review of military airborne hazards and burn pit effects on respiratory health
- Synthesizes mechanistic, epidemiologic, and clinical evidence including asthma
- Highlights PACT-Act-relevant exposure science
Why it matters: Comprehensive recent synthesis supporting asthma and other respiratory service connection
View on PubMed ↗Meta-analysisSupporting2024
Association between obstructive sleep apnea severity and depression risk: a systematic review and dose-response meta-analysis.Sleep Breath · 2024
- Individuals with severe OSA had a 34% higher adjusted risk of depression than those with mild OSA (RR 1.34, 95% CI 1.05-1.70).
- A significant linear dose-response relationship was found: depression risk increased ~0.4% for each 1-event/hour rise in the apnea-hypopnea index.
- Greater OSA severity is associated with greater depression risk.
Why it matters: Provides graded, severity-dependent evidence that worsening OSA elevates depression risk, reinforcing both the secondary-condition link and the relevance of AHI-based severity grading.
View on PubMed ↗Meta-analysisSupporting2024
Orofacial Myofunctional Therapy for Obstructive Sleep Apnea: A Systematic Review and Meta-Analysis.Laryngoscope · 2024
- Orofacial myofunctional therapy significantly improved AHI (mean difference -10.2 events/hour) in adults with OSA versus sham or no therapy.
- It also improved subjective sleepiness (Epworth -5.66), sleep-related quality of life, and minimum oxygen saturation.
- Benefit was limited in children due to poor (<50%) compliance.
Why it matters: Adds treatment-effectiveness evidence for a CPAP-alternative therapy, relevant for veterans who cannot tolerate CPAP and to documenting the spectrum of OSA management.
View on PubMed ↗ReviewSupporting2024
The Influence of Obstructive Sleep Apnea on Post-Stroke Complications: A Systematic Review and Meta-Analysis.J Clin Med · 2024
- In patients with high stroke severity, comorbid OSA was associated with a slightly higher risk of post-stroke complications (RR 1.06, 95% CI 1.01-1.12).
- Overall, across all severities, OSA did not significantly raise pooled post-stroke complication risk (RR 1.05, 95% CI 0.97-1.13).
- Complications assessed included cognitive impairment, dementia, depression, recurrent stroke, and death.
Why it matters: Connects OSA to worse cerebrovascular outcomes in more severe cases, supporting the comorbidity and secondary-condition picture for stroke and neurocognitive sequelae.
View on PubMed ↗Meta-analysisSupporting2021
Impact of CPAP on arterial stiffness in patients with obstructive sleep apnea: a meta-analysis of randomized trials.Sleep Breath · 2021
- CPAP significantly reduced pulse wave velocity, a marker of arterial stiffness (mean difference -0.44, 95% CI -0.76 to -0.12).
- CPAP did not significantly change the augmentation index (mean difference -1.96, p=0.24).
- Included trials had moderate risk of bias; authors call for additional confirmatory RCTs.
Why it matters: Mechanistically links OSA to vascular dysfunction and shows treatment can partially reverse it, supporting the cardiovascular comorbidity pathway underlying OSA-related secondary claims.
View on PubMed ↗Cohort studySupporting2021
Impact of obstructive sleep apnea complicated with type 2 diabetes on long-term cardiovascular risks and all-cause mortality in elderly patients.BMC Geriatr · 2021
- Prospective multicenter cohort examining cardiovascular disease and all-cause mortality risk in elderly OSA patients with versus without type 2 diabetes.
- OSA complicated by type 2 diabetes was studied as a prognostic combination for long-term cardiovascular and mortality outcomes in patients with no prior cardiovascular history.
- Reinforces metabolic comorbidity (type 2 diabetes) as a clinically relevant co-traveler of OSA affecting long-term prognosis.
Why it matters: Highlights the OSA-diabetes comorbidity axis and its impact on long-term cardiovascular risk, supporting metabolic secondary-condition associations and prognosis in older veterans.
View on PubMed ↗Meta-analysisSupporting2020
Obstructive sleep apnea and depression: A systematic review and meta-analysis.Maturitas · 2020
- Pooled longitudinal studies showed people with OSA were at more than double the risk of developing depression during follow-up (RR 2.18, 95% CI 1.47-2.88).
- Cross-sectional data alone showed no compelling OSA-depression association (OR 1.12), highlighting the importance of prospective design.
- Findings are consistent with OSA increasing the risk of incident depression despite high between-study heterogeneity (I2 = 72.8%).
Why it matters: Supports depression as a secondary condition causally linked to OSA, relevant to secondary service-connection claims built on a primary OSA rating.
View on PubMed ↗Clinical guidelineSupporting2019
Respiratory Health after Military Service in Southwest Asia and Afghanistan. An Official American Thoracic Society Workshop Report.Annals of the American Thoracic Society · 2019
- ATS synthesis of respiratory effects of SWA/Afghanistan deployment
- Asthma, chronic bronchitis, sinusitis, rare pneumonitis as deployment-associated
- ATS consensus on need for clinical evaluation
Why it matters: Authoritative consensus cited in VA C&P examination references
View on PubMed ↗Cohort studySupporting2012
The effects of exposure to documented open-air burn pits on respiratory health among deployers of the Millennium Cohort Study.Journal of Occupational and Environmental Medicine · 2012
- Linked documented burn pit deployment to incident respiratory symptoms and diagnoses
- Foundational large-cohort evidence
- Heavily cited in subsequent burn pit policy
Why it matters: Foundational evidence supporting burn-pit service-connection for asthma
View on PubMed ↗Cross-sectionalSupporting2005
Obstructive sleep apnea and ischemic heart disease in southwestern US veterans: implications for clinical practice.Sleep Breath · 2005
- Veterans with OSA were significantly more likely to have physician-diagnosed ischemic heart disease, with an adjusted OR of 2.99 (95% CI 1.07-8.42).
- OSA veterans were more often obese, had elevated systolic blood pressure, and underwent coronary angiography more frequently.
- Early OSA detection within the VA system is recommended to improve veteran health and reduce costs.
Why it matters: Specifically links OSA to ischemic heart disease within a US veteran VA population, supporting cardiovascular comorbidity claims in the exact population the rating applies to.
View on PubMed ↗