Key result
Total atrial conduction time estimated by PA-TDI duration had superior accuracy to predict AF recurrence after RFCA compared with left atrial maximum volume index (AUC 0.765 vs. 0.561).
Why the study?
Does total atrial conduction time estimated with tissue Doppler imaging predict the recurrence of atrial fibrillation after radiofrequency catheter ablation in patients with symptomatic drug-refractory paroxysmal AF?
Cohort (n=213)
Does total atrial conduction time estimated with tissue Doppler imaging predict the recurrence of atrial fibrillation after radiofrequency catheter ablation in patients with symptomatic drug-refractory paroxysmal AF?
Total atrial conduction time estimated by tissue Doppler imaging (PA-TDI duration) is a strong independent predictor of atrial fibrillation recurrence after radiofrequency catheter ablation, outperforming left atrial maximum volume index.
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PA-TDI may refine pre-RFCA recurrence risk stratification; hypothesis-generating and requires prospective validation.
Uijl et al. (2011) conducted a cohort in symptomatic drug-refractory paroxysmal atrial fibrillation (n=213). Total atrial conduction time (PA-TDI duration) vs. Left atrial maximum volume index was evaluated on Atrial fibrillation recurrence after radiofrequency catheter ablation. Total atrial conduction time estimated by PA-TDI duration had superior accuracy to predict AF recurrence after RFCA compared with left atrial maximum volume index (AUC 0.765 vs. 0.561).
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