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Closed heart cryoablation of the His bundle using an anterior septal approach
Y A Louagie1, G M Guiraudon, G J Klein
1Department of Surgery, University of Western Ontario, University Hospital, London, Canada.
Insights
Cryosurgical ablation of the His bundle is an effective treatment for patients with supraventricular tachycardia. This closed-heart procedure offers a safe alternative to catheter ablation, with no reported complications.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
- Minimally Invasive Cardiac Surgery
Background:
- Supraventricular tachycardias (SVTs) are common arrhythmias.
- Catheter ablation is a standard treatment, but carries risks.
- Alternative ablation techniques are being explored.
Purpose of the Study:
- To evaluate the efficacy and safety of His bundle cryosurgical ablation.
- To assess its potential as an alternative to catheter ablation.
Main Methods:
- Six patients underwent His bundle cryosurgical ablation via a closed-heart anteroseptal approach.
- Patients had various supraventricular tachycardias, including atrial fibrillation and flutter.
- Follow-up averaged 25 months.
Main Results:
- All patients achieved permanent heart block.
- No intraoperative complications were observed.
- The procedure demonstrated effectiveness in managing SVTs.
Conclusions:
- Closed-heart anteroseptal cryoablation of the His bundle is effective.
- It presents a viable alternative to catheter ablation for SVT treatment.
Abstract:
His bundle cryosurgical ablation using a closed heart anterior septal approach was used in 6 patients. There were 3 men and 3 women, aged 24 to 73 years. Three patients had atrial fibrillation and 2 patients had atrial flutter (2 with combined episodes of atrial tachycardia). One patient had atrial tachycardia. Five patients had no structural heart disease and 1 patient had left ventricular dilatation (ejection fraction, 0.35). All patients undergoing His bundle cryosurgical ablation had permanent heart block without intraoperative complications (mean follow-up, 25 months). Closed heart anteroseptal cryoablation of the His bundle is effective and is an alternative to attempted catheter ablation.