Non-Apnea Sleep Disorder associates with increased risk of incident heart failure-A nationwide population-based cohort study.

Abstract

PurposeNon-apnea sleep disorder (NASD) increases the risk of cardiovascular events, such as hypertension and ischemic heart disease (IHD). Patients with heart failure (HF) are at higher risk for sleep disorder; however, there is no documentation on NASD's association with HF to date. Therefore, our study aimed to determine whether NASD increases the risk of incident HF.Materials and methodsUsing the outpatient and inpatient data from Taiwan's Longitudinal Health Insurance Database, we conducted a nationwide cohort study of patients with a first-time diagnosis of NASD in the year 2000 and followed up the risk of incident heart failure until December 31, 2013. We calculated risks and incidence ratios of HF for patients with NASD compared with the general population. The cumulative incidence of NASD and the subsequent risk of HF are assessed by the Kaplan-Meier method and Cox regression using a matched comparison cohort of HF patients without NASD.ResultsThe NASD cohort had an adjusted hazard ratio (HR) of incident HF 19.7% higher than that of the cohort without NASD (95% CI = 1.130-1.270; pConclusionsOur study demonstrates that NASD patients are associated with a higher risk of incident HF.