title: [Relationship between ventricular extrasystole and parasystole].
abstract: Monomorphic ventricular extrasystoles, no less than 30 within an hour, were revealed in 89 of 300 patients with chronic ischemic heart disease during continuous 24-hour ECG recording on magnetic tape. A fixed type of the linkage interval (oscillations of no more than 0.1 sec) was established in 58 (62%) and the variable tupe (oscillations of more than 0.1 sec) in 31 (38%) patients. Oscillations in the linkage interval of more than 0.1 sec gave grounds to suspect parasystole. A deeper analysis revealed parasystole in 8 cases (2.6% of the total number of patients), the remaining cases were included in the group of extrasystoles with a variable non-parasystolic type of the linkage interval. This group of extrasystoles occupies an intermediate position between para- and extrasystole. The large number of transitional forms between extra- and parasystole suggests their common origin.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000145:classification* / Q000175:diagnosis; D005117:Cardiac Complexes, Premature / Q000145:classification* / Q000175:diagnosis / Q000209:etiology; D003327:Coronary Disease / Q000503:physiopathology; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Vzaimootnosheniia zheludochkovoĭ ekstrasistolii i parasistolii.