title: Coexisting ventricular and blocked atrial parasystole.
abstract: A rare instance showing non-conducted atrial parasystole coexisting with ventricular parasystole is presented and a related subject is briefly discussed. The importance of recognizing parasystole is again emphasized because the ordinary extrasystoles, particularly ventricular in origin, are frequently digitalis-induced, while parasystole, which superficially resembles the ordinary extrasystoles, does not seem to be related to digitalis.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000150:complications* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000150:complications* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged