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. 2017 Oct 15;13(10):1145-1152.
doi: 10.5664/jcsm.6758.

Independent Contributions of Obstructive Sleep Apnea and the Metabolic Syndrome to the Risk of Chronic Kidney Disease

Yu-Ji Lee  1 , Hye Ryoun Jang  2 , Wooseong Huh  2 , Yoon-Goo Kim  2 , Dae Joong Kim  2 , Ha Young Oh  2 , Eun Yeon Joo  3   4 , Jung Eun Lee  2
Affiliations

Independent Contributions of Obstructive Sleep Apnea and the Metabolic Syndrome to the Risk of Chronic Kidney Disease

Yu-Ji Lee et al. J Clin Sleep Med. .

Abstract

Study objectives: This retrospective study was conducted to evaluate the associations and interactions among obstructive sleep apnea (OSA), chronic kidney disease (CKD), and metabolic syndrome (MS).

Methods: This study included 1,732 subjects (1,482 male and 250 female) in whom OSA was diagnosed by polysomnography. The severity of OSA was defined as mild, moderate, or severe with an apnea-hypopnea index (AHI) score of 5 to < 15, 15 to < 30, and ≥ 30 events/h, respectively. CKD was defined as an estimated glomerular filtration rate < 60 mL/min/1.73 m2 or albuminuria.

Results: The prevalence of MS was 29.2% (n = 505). One hundred twenty-nine subjects (7.4%) had CKD. In subjects with MS, CKD prevalence increased progressively with OSA severity: 7.4%, 12.5%, and 15.8% in those with mild, moderate, or severe OSA, respectively (P = .025). Each 10-point increment in AHI score was independently associated with a 1.15-fold higher prevalence of CKD [95% confidence interval (CI), 1.036-1.280; P = .009] after adjustment for all individual components of MS. On the contrary, in those without MS, AHI was not associated with increased odds for CKD [odds ratio, 1.054; 95% CI, 0.930-1.195].

Conclusions: The independent association between OSA severity and CKD prevalence was observed only in subjects with MS. Further studies are needed to ascertain if OSA contributes to the development of CKD in subjects with MS.

Keywords: chronic kidney disease; metabolic syndrome; obstructive sleep apnea; risk factors.

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Figures

Figure 1
Figure 1. The median AHI increased progressively with the number of MS components.
P < .001 for trends.
Figure 2
Figure 2. The prevalence of CKD according to OSA in subjects with and without MS.
In subjects without MS, OSA severity was not related to CKD prevalence (P = .469 for trend). By contrast, CKD prevalence increased progressively with OSA severity in subjects with MS (P = .025 for trend). CKD = chronic kidney disease, OSA = obstructive sleep apnea, MS = metabolic syndrome.
See this image and copyright information in PMC

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