November 1, 1992Circulation
Radiofrequency catheter ablation of left lateral accessory pathways via the coronary sinus.
Key result
Coronary sinus RF ablation eliminates ~88% of left lateral accessory pathways refractory to endocardial approaches.
- n=8
Why the study?
A new technique for radiofrequency catheter ablation of left lateral accessory pathways via the coronary sinus was described for cases where endocardial ablation attempts were unsuccessful.
Does radiofrequency catheter ablation via the coronary sinus successfully ablate left lateral accessory pathways in patients with failed endocardial approaches?
Comparison
Epicardial radiofrequency ablation via coronary sinus wall vs prior endocardial ablation attempts
Design
Observational case series
Follow-up
1-10 months
Authors
Discussion
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Member takes
Implication
May offer bailout option after failed endocardial ablation; leaves open efficacy and safety in larger cohorts.
Study Design
Type
Observational (n=8)
Structured PICO
Does radiofrequency catheter ablation via the coronary sinus successfully ablate left lateral accessory pathways in patients with failed endocardial approaches?
P
Population
8 patients with left lateral accessory pathways (APs) who had unsuccessful multiple endocardial ablation attempts (from an overall group of 212 patients).
I
Intervention
Radiofrequency catheter ablation applied at the epicardium through the coronary sinus wall using a unipolar configuration (20-30 W for 10-60 seconds).
O
Outcome
Successful ablation of the accessory pathway
Radiofrequency catheter ablation via the coronary sinus is an effective and relatively safe alternative for left lateral accessory pathways when endocardial approaches fail.
Cite This Study
Haı̈ssaguerre et al. (1992) conducted an observational in Left lateral accessory pathways (n=8). Radiofrequency catheter ablation via the coronary sinus was evaluated on Successful ablation of the accessory pathway. Radiofrequency catheter ablation of left lateral accessory pathways via the coronary sinus successfully abolished conduction in 7 of 8 patients (87.5%) after unsuccessful endocardial approaches.