A-V nodal reentrant tachycardia vs accelerated A-V junctional rhythm in acute inferior myocardial infarction.
This report described initiation of A-V nodal reentrant tachyycardia in a patient with acute inferior myocardial infarction. The onset of tachycardia was preceded by an abortive A-V nodal Wenckebach periodicity. A-V nodal ischemia with or without vagotonia was implicated as the cause of induction of critical functional dissociation between the two A-V nodal conduction pathways. Since the tachycardia manifested its rate between 95-110 beats/min during the evolutionary phase of acute inferior myocardial infarction, it simulated, electrocardiographically, an accelerated A-V junctional rhythm. Analysis of the onset of tachcardia was of diagnostic importance.
D000208:Acute Disease; D001283:Atrioventricular Node / Q000503:physiopathology*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D013610:Tachycardia / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology