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Open research questions in Obstructive Sleep Apnea Research

388 unresolved questions extracted from the limitations and future-work sections of 2,117 Obstructive Sleep Apnea Research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The study faces challenges in selecting hub features due to the complexity of the data. The paper needs to evaluate the predictive capacity of the hub genes and study their biological significance in OSA. The study requires the integration of epidemiological and transcriptomic data, which can be challenging due to the different nature of the data.

    Integrating epidemiological and transcriptomic data reveals novel lipid metabolic drivers of obstructive sleep apnea · 2026 · DOI

  • The study had limited availability of sleep-related questionnaires, - 14745 participants with incomplete lipid level data were excluded, - 1229 participants had incomplete demographic and health-related data

    Integrating epidemiological and transcriptomic data reveals novel lipid metabolic drivers of obstructive sleep apnea · 2026 · DOI

  • There is a limited understanding of the relationship between EASIX and OSA severity and mortality. Prior studies have not fully explored the potential of EASIX as a biomarker for risk stratification in OSA. There is a need for studies that investigate the association between EASIX and OSA outcomes using both population-based cohorts and hospital-based clinical datasets.

    Linking disease severity and mortality in obstructive sleep apnea: the role of the endothelial activation and stress index · 2026 · DOI

  • However, whether EASIX-guided strategies can improve clinical decision-making or patient outcomes remains to be determined in prospective studies. Finally, although internal vali- dation was performed, machine learning models remain sus- ceptible to overfitting, and external validation is warranted.

    Linking disease severity and mortality in obstructive sleep apnea: the role of the endothelial activation and stress index · 2026 · DOI

  • The complexity of obstructive sleep apnea pathophysiology, involving intermittent hypoxia and sleep fragmentation. The need to distinguish the relative contributions of respiratory burden, sleep fragmentation, and metabolic imbalance to different neuropsychological dimensions. The challenge of developing a depressive-burden risk model that can support pragmatic risk stratification.

    Multidimensional neuropsychological heterogeneity in obstructive sleep apnea: deep clinical phenotyping in a single-center cohort, population proteomic context, and depressive-burden risk stratification · 2026 · DOI

  • the cross-sectional decompositions do not establish causal mediation, - the predefined 21-gene analysis did not remain FDR-significant, - the study did not require an OSA diagnosis for the proteomic analysis

    Multidimensional neuropsychological heterogeneity in obstructive sleep apnea: deep clinical phenotyping in a single-center cohort, population proteomic context, and depressive-burden risk stratification · 2026 · DOI

  • The pathways by which obstructive sleep apnea contributes to cerebral small vessel disease are not fully understood. There is a need to identify clinical and physiological factors associated with cerebral small vessel disease in adults with obstructive sleep apnea.

    Association between minimum nocturnal heart rate and cerebral small vessel disease in patients with obstructive sleep apnea · 2026 · DOI

  • Investigate the mechanisms underlying the association between VDD and heart failure - Examine the effect of vitamin D supplementation on heart failure risk in patients with OSA - Explore the relationship between VDD and other cardiovascular outcomes in patients with OSA - Conduct prospective studies to confirm the findings of this retrospective cohort study

    Vitamin D deficiency and risk of heart failure in patients with obstructive sleep apnea: a cohort analysis · 2026 · DOI

  • The association between vitamin D deficiency and heart failure in OSA patients is unclear. Prior studies have not investigated the relationship between vitamin D deficiency and new-onset heart failure in adults with OSA.

    Vitamin D deficiency and risk of heart failure in patients with obstructive sleep apnea: a cohort analysis · 2026 · DOI

  • The classes of severity of OSA exhibit an unbalanced number of samples. The lack of relevant patient information, including comorbidities, medication usage, and personal history. The possibility of producing noisy instances with the SMOTE technique.

    The use of heart rate variability, oxygen saturation, and anthropometric data with machine learning to predict the presence and severity of obstructive sleep apnea · 2025 · DOI

  • Future studies should assess the impact of comorbidities, medication usage, and personal history on predictive models. The effect of level of physical activity, smoking, alcohol consumption, and race on OSA should be evaluated. Further research is needed to validate the results in a larger and more diverse population.

    The use of heart rate variability, oxygen saturation, and anthropometric data with machine learning to predict the presence and severity of obstructive sleep apnea · 2025 · DOI

  • further exploration of the mechanisms linking MetS and OSA, - investigation of the effects of weight loss on OSA severity, - study of the relationship between OSA and hyperglycaemia/diabetes

    Metabolic Crossroads: Unveiling the Complex Interactions between Obstructive Sleep Apnoea and Metabolic Syndrome · 2024 · DOI

  • the lack of understanding of the complex interactions between OSA and MetS. the need for further exploration of the mechanisms linking MetS and OSA. the absence of specific dietary guidelines for MetS and OSA.

    Metabolic Crossroads: Unveiling the Complex Interactions between Obstructive Sleep Apnoea and Metabolic Syndrome · 2024 · DOI

  • lack of awareness among patients and physicians, - underdiagnosis and underestimation of SDB, - challenges in adhering to CPAP therapy, - poor compliance with CPAP therapy

    Sleep Apnea and Heart Failure—Current State-of-The-Art · 2024 · DOI

  • Significant challenges in screening and diagnosis of sleep-disordered breathing in heart failure patients persist. The underdiagnosis and underappreciation of sleep-disordered breathing in heart failure patients affect patient management and outcomes. There is a need for enhanced screening strategies and broader utilization of therapeutic interventions to improve the management and outcomes of heart failure patients with concomitant sleep-disordered breathing.

    Sleep Apnea and Heart Failure—Current State-of-The-Art · 2024 · DOI

  • The exact mechanisms behind obstructive sleep apnea-induced cardiovascular diseases remain unclear. There is a lack of understanding of the inflammatory mechanisms linking intermittent hypoxia to cardiovascular dysfunction in pregnancies and offspring.

    Obstructive Sleep Apnea-Associated Intermittent Hypoxia-Induced Immune Responses in Males, Pregnancies, and Offspring · 2024 · DOI

  • Although malocclusion may contribute to airway impairment and altered growth patterns, the associations between sleep-related symptoms and physiological stress markers remain unclear.

    Dynamics of salivary stress-related biomarkers in children with malocclusion and risk for sleep problems and sleep-disordered breathing: a cross-sectional study · 2026 · DOI

  • Limitations This study includes partial blinding, a modest sample size, a short follow-up period, and the use of respiratory polygraphy instead of polysomnography.

    The impact of different rapid palatal expansion appliances on sleep, nasal airway resistance, and dentoskeletal/dentoalveolar characteristics: a prospective, randomized controlled trial · 2026 · DOI

  • AI-based screening tools may support risk stratification and referral prioritization, but their diagnostic accuracy across apnea-hypopnea index (AHI) thresholds remains uncertain.

    Performance of AI-Based Screening Tools for Obstructive Sleep Apnea Across Apnea-Hypopnea Index Thresholds: Systematic Review and Meta-Analysis · 2026 · DOI

  • However, the specific impact of AR on sleep architecture across different SDB subtypes, such as obstructive sleep apnea (OSA) and snoring, remains under-explored.

    Association of allergic rhinitis with polysomnographic arousal indices in children with sleep-disordered breathing · 2026 · DOI

  • Because all participants were recruited from an orthodontic clinic, these findings may not be generalizable to the general pediatric population.

    Morphological Study of the Characteristics of Lips in Children With Mouth Breathing · 2026 · DOI

  • Yet, there's limited research on the effects of RME on the craniofacial, dental arch morphology and polysomnographic measures in pediatric OSAS.

    Craniofacial and dental arch morphological changes in pediatric obstructive sleep apnea syndrome following rapid maxillary expansion · 2026 · DOI

  • Abstract Sleep is a fundamental biological process with broad implications for physical and mental health, yet its complex relationship with disease remains poorly understood.

    A multimodal sleep foundation model for disease prediction · 2026 · DOI

  • Although lateral pharyngoplasty has demonstrated favorable outcomes regarding AHI reduction, its impact on hypoxic burden (HB) remains unknown.

    Hypoxic burden reduction after lateral pharyngoplasty in patients with obstructive sleep apnea: Beyond the apnea-hypopnea index · 2026 · DOI

  • Nevertheless, evidence supporting phenotype-specific and biomarker-guided nutritional interventions remains insufficient.

    Dietary Approaches to Obstructive Sleep Apnea: Translating Mechanistic Pathways into Clinical Practice · 2026 · DOI

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388 open questions have been extracted from the limitations and future-work passages of 2,117 Obstructive Sleep Apnea Research papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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