Key result
Among patients with both PSVT and AF, those with AVNRT had a significantly higher incidence of a superior vena cava origin of AF compared to those with WPW syndrome (50% vs 0%, P=0.047).
Why the study?
What are the electrophysiological characteristics and origins of atrial fibrillation in patients with concurrent paroxysmal supraventricular tachycardia and paroxysmal atrial fibrillation?
Population
402 consecutive patients with paroxysmal atrial fibrillation undergoing radiofrequency ablation, including…
Comparison
Electrophysiological mapping and radiofrequency… vs Patients with PV foci vs. non-PV foci; Group 1…
Design
Cohort
Authors
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Hypothesis-generating for SVC-origin AF in AVNRT; leaves open differential ablation strategies versus WPW.
Observational (n=402)
What are the electrophysiological characteristics and origins of atrial fibrillation in patients with concurrent paroxysmal supraventricular tachycardia and paroxysmal atrial fibrillation?
Absolute Event Rate: 50% vs 0%
p-value: p=0.047
In patients with paroxysmal AF and PSVT, an SVC origin of AF is closely associated with AVNRT, suggesting different mechanisms of atrial vulnerability compared to WPW syndrome.
Chang et al. (2007) conducted an observational in Paroxysmal supraventricular tachycardia (PSVT) and paroxysmal atrial fibrillation (AF) (n=402). Atrioventricular nodal reentrant tachycardia (AVNRT) vs. Wolff-Parkinson-White (WPW) syndrome was evaluated on Superior vena cava (SVC) origin of AF (p=0.047). Among patients with both PSVT and AF, those with AVNRT had a significantly higher incidence of a superior vena cava origin of AF compared to those with WPW syndrome (50% vs 0%, P=0.047).
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