P Wave Dispersion Predicts Recurrence of Paroxysmal Atrial Fibrillation in Patients with Atrioventricular Nodal Reentrant Tachycardia Treated with Radiofrequency Catheter Ablation
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Key result
P wave dispersion ≥35.5 ms (P<0.050) and left atrial diameter >40 mm (P<0.010) were independent predictors of paroxysmal atrial fibrillation recurrence after slow pathway ablation.
Why the study?
Does P wave dispersion predict the recurrence of paroxysmal atrial fibrillation in patients with atrioventricular nodal reentrant tachycardia treated with slow pathway ablation?
Population
72 patients, comprising 36 with atrioventricular nodal reentrant tachycardia and documented paroxysmal…
Comparison
Slow pathway radiofrequency catheter ablation… vs Patients with AVNRT only for baseline comparisons.
Design
Cohort
Follow-up
mean 34 +/- 11 months
Authors
Discussion
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Implication
May inform post-ablation AF surveillance in AVNRT; hypothesis-generating and requires prospective validation before practice change.
Study Design
Type
Case-Control (n=72)
Structured PICO
Does P wave dispersion predict the recurrence of paroxysmal atrial fibrillation in patients with atrioventricular nodal reentrant tachycardia treated with slow pathway ablation?
P
Population
72 patients with AVNRT (36 with documented paroxysmal AF and 36 age-matched controls) treated with slow pathway ablation, followed for a mean of 34 months.
E
Exposure
Slow pathway radiofrequency catheter ablation and measurement of P wave parameters (P wave duration and P dispersion).
C
Comparator
Patients with AVNRT only (Group 2) for baseline comparisons.
O
Outcome
Recurrence of paroxysmal atrial fibrillationhard clinical
Main Result
p-value: p=<0.050
P wave dispersion and left atrial diameter are independent predictors of paroxysmal atrial fibrillation recurrence in patients with AVNRT undergoing slow pathway ablation.
Cite This Study
Amasyalı et al. (2006) conducted a case-control in Atrioventricular nodal reentrant tachycardia and paroxysmal atrial fibrillation (n=72). P wave dispersion ≥35.5 ms vs. P wave dispersion <35.5 ms was evaluated on Recurrence of paroxysmal AF (p=<0.050). P wave dispersion ≥35.5 ms (P<0.050) and left atrial diameter >40 mm (P<0.010) were independent predictors of paroxysmal atrial fibrillation recurrence after slow pathway ablation.
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