title: [The mechanism of tachycardic arrhythmias].
abstract: The mechanisms of cardiac tachyarrhythmias are discussed on the basis of experimental animal studies. Two major mechanisms are discussed in detail: membrane oscillations arising form electrically unstable cells and acting as ectopic foci of a tachycardia, and disturbances of impulse propagation which cause vortex-like circulating excitation with re-entry. These vorteces from the origin of the re-entrant tachycardias and of ventricular fibrillation.
authors.affiliation: Physiologisches Institut, Universität Bern.
authors.forename: A G
authors.initials: AG
authors.lastname: Kléber
mesh_terms: D000818:Animals; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D007473:Ion Channels / Q000502:physiology; D012849:Sinoatrial Node / Q000503:physiopathology; D013610:Tachycardia / Q000503:physiopathology*
chemical_list: D007473:Ion Channels