Cited by 523Obstructive Sleep Apnea ResearchSleep and related disordersAdipokines, Inflammation, and Metabolic Diseases

CPAP, Weight Loss, or Both for Obstructive Sleep Apnea

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Chirinos, Julio A., Gurubhagavatula, Indira, Teff, Karen, Rader, Daniel J., Wadden, Thomas A., Townsend, Raymond, Foster, Gary D., Maislin, Greg +5 more·2014·New England Journal of Medicine

Abstract

BACKGROUND: Obesity and obstructive sleep apnea tend to coexist and are associated with inflammation, insulin resistance, dyslipidemia, and high blood pressure, but their causal relation to these abnormalities is unclear. METHODS: We randomly assigned 181 patients with obesity, moderate-to-severe obstructive sleep apnea, and serum levels of C-reactive protein (CRP) greater than 1.0 mg per liter to receive treatment with continuous positive airway pressure (CPAP), a weight-loss intervention, or CPAP plus a weight-loss intervention for 24 weeks. We assessed the incremental effect of the combined interventions over each one alone on the CRP level (the primary end point), insulin sensitivity, lipid levels, and blood pressure. RESULTS: Among the 146 participants for whom there were follow-up data, those assigned to weight loss only and those assigned to the combined interventions had reductions in CRP levels, insulin resistance, and serum triglyceride levels. None of these changes were observed in the group receiving CPAP alone. Blood pressure was reduced in all three groups. No significant incremental effect on CRP levels was found for the combined interventions as compared with either weight loss or CPAP alone. Reductions in insulin resistance and serum triglyceride levels were greater in the combined-intervention group than in the group receiving CPAP only, but there were no significant differences in these values between the combined-intervention group and the weight-loss group. In per-protocol analyses, which included 90 participants who met prespecified criteria for adherence, the combined interventions resulted in a larger reduction in systolic blood pressure and mean arterial pressure than did either CPAP or weight loss alone. CONCLUSIONS: In adults with obesity and obstructive sleep apnea, CPAP combined with a weight-loss intervention did not reduce CRP levels more than either intervention alone. In secondary analyses, weight loss provided an incremental reduction in insulin resistance and serum triglyceride levels when combined with CPAP. In addition, adherence to a regimen of weight loss and CPAP may result in incremental reductions in blood pressure as compared with either intervention alone. (Funded by the National Heart, Lung, and Blood Institute; ClinicalTrials.gov number, NCT0371293 .).

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Crossref · 10.1056/nejmoa1306187

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  • The impact of CPAP therapy on glycaemic control is uncertain.

    “However, the impact of CPAP therapy on glycaemic control is uncertain (Chirinos et al., 2014; Reutrakul & Mokhlesi, 2017).”

    From Obstructive sleep apnea: transition from pathophysiology to an integrative disease model (2022) · cites this paper as Chirinos et al., 2014

    The Discussion reports mixed findings from earlier studies on CPAP and insulin resistance, which supports uncertainty about a related metabolic effect. But this trial measured insulin sensitivity, not glycaemic control directly, and found no improvement with CPAP alone; it also excluded people with diabetes. The citation therefore supports the claim only indirectly. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Since obesity confers additional cardiovascular risk to OSA patients, weight loss directly benefits cardiovascular health.

    “Since obesity confers additional CV risk to OSA patients, weight loss directly benefits CV health.215”

    From International Consensus Statement on Obstructive Sleep Apnea (2023) · cites this paper as [215]

    Experimental — accuracy not yet measured
  • CPAP's effect on cardiovascular biomarkers such as C-reactive protein and lipids is more variable than its effect on blood pressure.

    “Although most (but not all) studies and the above meta-analysis support a modest effect of CPAP on blood pressure, the effect on biomarkers associated with cardiovascular risk such as C-reactive protein has been more variable.”

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Authors
Chirinos, J. A., Gurubhagavatula, I., Teff, K., Rader, D. J., Wadden, T. A., Townsend, R., Foster, G. D., Maislin, G., Saif, H., Broderick, P., Chittams, J., Hanlon, A. L., & Pack, A. I.
Affiliations
  • Hospital of the University of Pennsylvania (US)
  • Monell Chemical Senses Center (US)
  • Temple University (US)
  • University of Pennsylvania (US)
Venue
New England Journal of Medicine
Published
2014-06-12
Volume
370
Issue
24
Pages
2265-2275
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2128816837
Cited by
523
References
40
Citations by year
2026: 32 · 2025: 31 · 2024: 36 · 2023: 38 · 2022: 44 · 2021: 33 · 2020: 36 · 2019: 51 · 2018: 47 · 2017: 47 · 2016: 57 · 2015: 48 · 2014: 21 · 2013: 1 · 2012: 1
FWCI
38.34
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion, other-oa)
Funders
National Heart, Lung, and Blood Institute (HL-R01080076, P01HL094307, R01HL080076)
Topics
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
obstructive sleep apnea, obesity, continuous positive airway pressure, weight loss, C-reactive protein, inflammation, insulin resistance, serum triglycerides, blood pressure, serum lipids
MeSH terms
Adult, Aged, Blood Pressure, C-Reactive Protein, Combined Modality Therapy, Female, Humans, Insulin Resistance, Male, Middle Aged, Obesity, Triglycerides, Weight Loss, Sleep Apnea, Obstructive, Continuous Positive Airway Pressure, Intention to Treat Analysis

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