Key result
Radiofrequency ablation creating a line of block between the septum primum and the mitral annulus cured left septal atrial flutter in 100% of patients compared to 40% with a pulmonary vein line.
Why the study?
Does radiofrequency ablation prevent recurrence in patients with left septal atrial flutter?
Study Design
Type
Observational (n=11)
Structured PICO
Does radiofrequency ablation prevent recurrence in patients with left septal atrial flutter?
P
Population
11 patients with a novel macroreentrant form of left atrial flutter circuit (9 treated with antiarrhythmic drugs for concomitant atrial fibrillation).
I
Intervention
Radiofrequency ablation (group 1: from septum primum to right inferior pulmonary vein, n=5; group 2: from septum primum to mitral annulus, n=6).
O
Outcome
Maintenance of sinus rhythm without recurrence
Main Result
Absolute Event Rate: 100% vs 40%
Radiofrequency ablation creating a line of block between the septum primum and the mitral annulus is effective for curing left septal atrial flutter.
Authors
Discussion
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Implication
May support septal mitral line over pulmonary vein ablation in left septal flutter; leaves open confirmation in prospective trials.
Cite This Study
Marrouche et al. (2004) conducted an observational in Left septal atrial flutter (n=11). Radiofrequency ablation from septum primum to mitral annulus vs. Radiofrequency ablation from septum primum to right inferior pulmonary vein was evaluated on Maintenance of sinus rhythm without recurrence. Radiofrequency ablation creating a line of block between the septum primum and the mitral annulus cured left septal atrial flutter in 100% of patients compared to 40% with a pulmonary vein line.