title: [Rheological properties of the blood and paroxysmal disorders of cardiac rhythm].
abstract: Blood viscosity, platelet and erythrocyte aggregation, venous hematocrit, and blood free fatty acid, fibrinogen, and glucose content were studied in dynamics in 63 patients with paroxysmal disorders of cardiac rhythm. During an attack of arrhythmia, the viscosity of blood, aggregation of erythrocytes, and the concentration of free fatty acids and glucose in blood were significantly increased, while the degree and rate of the reversibility of platelet aggregation were reduced. The reversibility of platelet aggregation increased after the attacks had been arrested with drugs and slightly decreased after electroimpulsive therapy. This may underlie the development of thromboembolic complications and postconversion arrhythmias after electropuls therapy. Increase in the rate of erythrocyte aggregation immediately after the arrest of an attack by an electric discharge was also revealed. The authors believe that deterioration of the blood rheologic properties is one of the pathogenetic mechanisms of the development of cardiac arrhythmias.
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000097:blood / Q000503:physiopathology*; D001790:Blood Physiological Phenomena; D001809:Blood Viscosity; D003327:Coronary Disease / Q000097:blood / Q000503:physiopathology; D004562:Electrocardiography; D004903:Erythrocyte Aggregation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010974:Platelet Aggregation; D012212:Rheology
vernacular_title: Reologicheskie svoĭstva krovi i paroksizmal'nye narusheniia ritma serdtsa.