Intra-atrial and atrioventricular nodal reentrant tachycardia in the same subject diagnosed at transesophageal electrophysiologic study.
The case report deals with a young woman with frequent episodes of paroxysmal narrow QRS tachycardia of uncertain etiology at Holter monitoring in whom a transesophageal electrophysiologic study was carried out in order to identify the electrogenetic mechanism of the presenting arrhythmia. During the electrophysiologic study, 2 different types of supraventricular tachycardia were induced and diagnosed as intra-atrial and atrioventricular nodal reentrant tachycardia. This association represents a rare finding and can provide a possible explanation to the intriguing electrocardiographic pattern observed at Holter monitoring. Therefore, transesophageal electrophysiologic study proved to be a valuable method for evaluating subjects with complex supraventricular tachycardias.
Unità Operativa, Divisione di Cardiologia, IRCCS Istituto Oncologico, Bari.
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M
Tritto
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Calabrese
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Massari
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Tricarico
D000328:Adult; D001285:Atropine; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D004562:Electrocardiography / Q000187:drug effects; D004947:Esophagus; D005260:Female; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000503:physiopathology; D013612:Tachycardia, Ectopic Atrial / Q000175:diagnosis* / Q000503:physiopathology; D014700:Verapamil
D001285:Atropine; D014700:Verapamil