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February 27, 2015SLEEPOpen Access

In nonobese patients with coronary artery disease, an oxygen desaturation index ≥5 events/h was independently associated with increased hs-CRP (OR 1.49; 95% CI 1.13-1.99) and IL-6.

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Why the study?

Is obstructive sleep apnea associated with increased inflammatory biomarkers in nonobese patients with coronary artery disease?

Population

408 revascularized patients with coronary artery disease and preserved left ventricular ejection fraction…

Comparison

Obstructive sleep apnea defined by… vs No OSA and obese patients with CAD and OSA

Design

Cross-sectional

Key result

In nonobese patients with coronary artery disease, an oxygen desaturation index ≥5 events/h was independently associated with increased hs-CRP (OR 1.49; 95% CI 1.13-1.99) and IL-6.

Authors

ETErik ThunströmHGHelena GlantzMFMichael Fu

Discussion

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Overview

OSA-related desaturations associate with inflammation in nonobese CAD; hypothesis-generating for targeted interventions.

Study Design

Type

Cross-Sectional (n=408)

Structured PICO

Is obstructive sleep apnea associated with increased inflammatory biomarkers in nonobese patients with coronary artery disease?

P
Population
408 revascularized patients with coronary artery disease (CAD) and preserved left ventricular ejection fraction, including 303 nonobese patients (213 with OSA [AHI ≥15 events/h], 90 without OSA [AHI <5 events/h]) and 105 obese patients with CAD and OSA.
I
Intervention
Obstructive sleep apnea (OSA) defined by apnea-hypopnea index (AHI) ≥ 15 events/h or oxygen desaturation index (ODI) ≥ 5 events/h
C
Comparator
No OSA (AHI < 5 events/h) and obese patients with CAD and OSA
O
Outcome
Circulating levels of high-sensitivity C-reactive protein (hs-CRP), interleukin (IL)-6, IL-8, and tumor necrosis factor-αsurrogate

Main Result

Effect estimate: OR 1.49 (hs-CRP) and OR 1.30 (IL-6) (95% CI 1.13-1.99 (hs-CRP) and 1.05-1.60 (IL-6))

Intermittent hypoxemia in obstructive sleep apnea is independently associated with increased inflammatory activity in nonobese patients with coronary artery disease.

Cite This Study

Thunström et al. (2015) conducted a cross-sectional in Coronary Artery Disease and Obstructive Sleep Apnea (n=408). Obstructive sleep apnea (ODI ≥ 5 events/h) vs. No OSA (AHI < 5 events/h) was evaluated on Circulating levels of inflammatory biomarkers (hs-CRP, IL-6, IL-8, TNF-α) (OR 1.49 (hs-CRP) and OR 1.30 (IL-6), 95% CI 1.13-1.99 (hs-CRP) and 1.05-1.60 (IL-6)). In nonobese patients with coronary artery disease, an oxygen desaturation index ≥5 events/h was independently associated with increased hs-CRP (OR 1.49; 95% CI 1.13-1.99) and IL-6.

synapsesocial.com/papers/6a10eea9326831f8a2648baehttps://doi.org/10.5665/sleep.4510
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