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Radiofrequency catheter ablation of left-sided accessory pathways using a transeptal technique and specialized long
Insights
Radiofrequency catheter ablation using the transeptal route is effective for supraventricular tachycardia, with a 92% success rate. This approach offers good long-term results and may reduce recurrence rates for accessory pathways.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Supraventricular tachycardia (SVT) is a common arrhythmia.
- Left-sided accessory pathways often require ablation for symptomatic relief.
- The transaortic route is a traditional approach for catheter ablation.
Purpose of the Study:
- To evaluate the efficacy and safety of the transeptal route for radiofrequency catheter ablation of left-sided accessory pathways.
- To assess the long-term outcomes of this interventional procedure.
- To explore the role of specialized sheaths in improving ablation outcomes.
Main Methods:
- Radiofrequency catheter ablation was performed in 49 patients with 51 left-sided accessory pathways.
- The transeptal route was utilized, employing specialized long vascular sheaths with compound curves.
- Success rates, procedure times, fluoroscopic exposure, and complication rates were recorded.
Main Results:
- The procedure achieved a 92% success rate in 45 patients.
- Mean fluoroscopic time was 22.5 minutes, and mean procedure time was 1.7 hours.
- Complications included pericardial tamponade (4%) and pathway switching (4%); long-term recurrence was 4% over 16.8 months.
Conclusions:
- The transeptal route is a viable alternative to the transaortic approach for radiofrequency catheter ablation of accessory pathways.
- This method demonstrates good long-term efficacy and safety.
- Specialized sheaths may enhance catheter stability, leading to more effective lesions and reduced recurrence.
Abstract:
49 patients with 51 left-sided accessory pathways underwent radiofrequency catheter ablation for symptomatic supraventricular tachycardia via the transeptal route using specialised long vascular sheaths with compound curves. The procedure was successful in 45 patients (92%). The mean fluroscopic time was 22.5 +/- 15.2 mins and the mean procedure time was 1.7 +/- 0.5 hours. Pericardial tamponade occurred in 2 patients (4%) and 2 patients (4%) required switching to the retrograde transaortic route for successful ablation of the pathways. During the period of follow-up of 16.8 +/- 6.9 months, clinical recurrence occurred in 2 patients (4%). In conclusion, the transeptal route of radiofrequency catheter ablation is a useful alternative strategy to the transaortic approach with good long term results. The use of specialised sheaths may help in stabilisation of the catheter during the procedure which can generate more adequate lesions and consequently a lower recurrence rate.