Vol 66, No 8 (2008)
Other
Published online: 2008-08-27
Invasive electrophysiology
A long RP tachycardia – an electrophysiological puzzle
DOI: 10.33963/v.kp.80460
Kardiol Pol 2008;66(8):909-914.
Abstract
A case of a 30-year-old male with paroxysmal long RP tachycardia is presented. During electrophysiological study the clinical arrhythmia (atypical atrioventricular nodal reentrant tachycardia – AVNRT) was misdiagnosed as ectopic left atrial tachycardia due to ventricle-atrium-atrium-ventricle (VAAV) response after entrainment, eccentric atrial activation sequence and easiness in achieving atrio-ventricular dissociation with ventricular pacing during the tachycardia. Reassessment of the VAAV response lead to recognition of pseudo-VAAV response often seen in atypical, fast-slow AVNRT. Subsequent ablation of the slow pathway at standard site in the triangle of Koch was successful in eliminating the tachycardia.
Keywords: entrainmentatypical atrioventricular nodal reentrant tachycardiapseudo-VAAV responseablation