• Gamze Aslan, Baris Afsar, Dimitrie Siriopol, Asiye Kanbay, Oguzhan Sal, Caghan Benli, John Okcuoglu, Adrian Covic, and Mehmet Kanbay.
• 1 Department of Cardiology, Koc University Hospital, Istanbul, Turkey.
• Angiology. 2018 Mar 1; 69 (3): 195-204.

AbstractContinuous positive airway pressure (CPAP) is the first-line treatment of obstructive sleep apnea (OSA). Obstructive sleep apnea is a predictor of cardiovascular (CV) events. In this meta-analysis, we evaluated the effect of CPAP on left ventricular ejection fraction (LVEF), CV events, CV mortality, and all-cause mortality in patients with OSA. Nine articles (n = 9610 patients) were analyzed. Four different meta-analyses were performed: evaluation of LVEF, assessment of all-cause mortality, CV mortality, and CV events. Continuous positive airway pressure treatment was associated with a significant increase in LVEF (mean difference: 2.1%, 95% confidence interval [CI]: 0.8%-3.4%). There was a nonsignificant reduction in all-cause mortality (hazard ratio [HR]: 0.92, 95% CI: 0.73-1.15) but a significant reduction of 66% in the risk of CV mortality associated with the CPAP treatment (HR: 0.34, 95% CI: 0.17-0.68, P = .002). There was a nonsignificant reduction in the risk of CV events in the CPAP-treated patients (HR: 0.84, 95% CI: 0.60-1.18, P = .31). Our meta-analyses showed that CPAP treatment improves LVEF and could have a beneficial effect on CV mortality.

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