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Atrial fbrillation is one of the most common cardiac arrhythmias, which is dangerous for its complications. This article presents the most common risk factors for the development of arrhythmias: obesity, hypertension, diabetes, smoking and others. The analysis of modifable risk factors will enable to elaborate preventive measures and reduce the incidence of atrial fbrillation.

Bacground. Obstructive sleep apnea-hypopnea syndrome (OSAHS) is associated with increased incidence and progression of atrial fibrillation (AF). Experimental studies indicate that OSAHS can modify the cardiac extracellular matrix (ECM). However, significant mechanisms of cardiac remodeling in AF patients with OSAHS have not been uncovered. The aim: to evaluate the impact of OSAHS on serum levels of tissue inhibitor of matrix metalloproteinase-1(TIMP-1) and hypoxia-inducible factor-1α (HIF-1α) in AF patients with ischemic heart disease (IHD) and/or arterial hypertension (AH), suffering from OSAHS. Material and methods. We examined 140 non-valvular AF patients with IHD and/or AH. Cardiorespiratory monitoring was conducted in the studied subjects and they were divided into 2 groups according to the presence of OSAHS: group 1 – non-OSAHS patients; group 2 – patients with OSAHS. Serum levels of TIMP-1 and HIF-1α were assayed using commercially available ELISA kit. Results. The patients with OSAHS had higher levels of TIMP-1 and HIF-1α than non-OSAHS patients (p