Key result
Creation of a single lesion at the right posterior atrial septum using a conventional right-sided approach successfully eliminated AVNRT involving two distinct antegrade slow pathways.
Case Report (n=1)
A single ablation lesion at the right posterior atrial septum can successfully eliminate AVNRT even when multiple antegrade slow pathways are present.
Hypothesis-generating for simplified right-sided ablation in multi-pathway AVNRT; larger studies needed before adoption.
QRS voltage and cycle length alternation can be seen during supraventricular re-entrant tachycardias, especially in atrioventricular (AV) re-entrant tachycardia. We present a case of a 20-year-old man, in which AV nodal re-entrant tachycardia (AVNRT) shows alternation of QRS voltage and cycle length, as well as right bundle branch block aberration due to a re-entrant circuit using two distinct, beat-to-beat alternating slow AV nodal pathways antegradely and a single fast pathway retrogradely. Although more than one antegrade slow pathway exists, creation of a single lesion at the right posterior atrial septum using the conventional right-sided approach successfully eliminated AVNRT.
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Amasyalı et al. (2006) conducted a case report in Atrioventricular nodal re-entrant tachycardia (n=1). Ablation at the right posterior atrial septum was evaluated on Elimination of AVNRT. Creation of a single lesion at the right posterior atrial septum using a conventional right-sided approach successfully eliminated AVNRT involving two distinct antegrade slow pathways.
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