Open AccessAn unusual focal atrial tachycardia that simulates a common node reentrant tachycardia: A case report
Author(s) -
Carlo Maida,
Anna Cirrincione,
Mario Daidone,
Valerio Vassallo,
Alessandro Del Cuore,
Antonino Tuttolomondo,
Antonio Pinto
Publication year - 2017
Publication title -
case reports in internal medicine
Language(s) - English
Resource type - Journals
eISSN - 2332-7251
pISSN - 2332-7243
DOI - 10.5430/crim.v4n4p33
Subject(s) - tachycardia , cardiology , medicine , atrioventricular reentrant tachycardia , atrioventricular node , supraventricular tachycardia , atrial tachycardia , nodal , electrocardiography , anesthesia , catheter ablation , accessory pathway , atrial fibrillation
Focal atrial tachycardia is a relatively uncommon paroxysmal supraventricular tachycardia. Although atrioventricular conduction is regularly 1:1 and the PR interval is often in the normal range, occasionally a 1:1 atrial tachycardia may have a short RP interval, especially when the heart rate is particularly high or the atrioventricular conduction is markedly increased. In these cases, it is necessary to differentiate focal atrial tachycardia from common atrioventricular nodal reentrant tachycardia , which is the most frequent form of paroxysmal supraventricular tachycardia. We describe a case of unusual focal atrial tachycardia with a short RP interval (< 90 ms) in a patient with a marked AV first-degree block which simulates a typical atrioventricular nodal reentrant tachycardia.