title: The mechanism of supraventricular tachycardia. Ectopic (parasystolic) focus versus re-entry.
mesh_terms: D000328:Adult; D005117:Cardiac Complexes, Premature / Q000150:complications*; D004562:Electrocardiography; D006327:Heart Block / Q000150:complications; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D013614:Tachycardia, Paroxysmal / Q000209:etiology / Q000503:physiopathology*