Abstract
Purpose
Obstructive sleep apnea (OSA) is related to endothelin-1 (ET-1). Continuous positive airway pressure (CPAP) is an effective therapy for OSA. However, the effectiveness of CPAP on ET-1 levels in patients with OSA yielded contradictory results. We conducted a meta-analysis to assess the effect of CPAP on ET-1 levels in OSA.
Methods
The Embase, and Cochrane Library and PubMed were searched before March, 2018. The overall effects were measured by the standardized mean difference (SMD) with a 95% confidence interval (CI). Ten studies were included and the meta-analysis was conducted using Stata 14.0.
Results
10 studies involving 375 patients were included in the meta-analysis. The result showed that there was a significant reduction in ET-1 levels in OSA patients before and after CPAP therapy (SMD = − 0.74, 95% CI = − 1.30 to − 0.17, z = 2.56, p = 0.01). Further, subgroup analysis demonstrated that Apnea–Hypopnea Index (AHI), CPAP therapy duration, and sample size also affected CPAP therapy.
Conclusions
Our meta-analysis indicated that CPAP treatment among OSA patients was significantly was related to a decrease in ET-1 levels. Further prospective long-term studies with a larger number of patients are needed to evaluate and clarify this issue.
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This work was supported by Grant 81370182 from the Chinese National Natural Science Foundation. The sponsor had no role in the design or conduct of this research.
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Lin, G., Chen, Q., Huang, J. et al. Effect of continuous positive airway pressure on endothelin-1 in patients with obstructive sleep apnea: a meta-analysis. Eur Arch Otorhinolaryngol 276, 623–630 (2019). https://doi.org/10.1007/s00405-018-5225-8
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DOI: https://doi.org/10.1007/s00405-018-5225-8