Recurrence of AV Nodal Reentrant Tachycardia (AVNRT) after Low Power Radiofrequency Catheter Ablation
Recurrence of AV Nodal Reentrant Tachycardia
Keywords:
cardiac arrhythmia, AV nodal reentrant tachycardia, catheter ablationAbstract
Radiofrequency catheter ablation (RF ablation) is considered as the gold standard for treatment of patients with atrioventricular nodal reentrant tachycardia (AVNRT) and catheter ablation with a power setting between 20 to 60 watts have been reported. The objective of this retrospective descriptive study aimed to evaluate recurrence rate in patient with AVNRT who underwent RF ablation with low power technique in Naresuan University Hospital between January 2014 to December 2017. The results showed that, out of 160 patients who underwent RF ablation with power setting 30 to 35 watts, there were 131 women (81.9%), the average age was 53.7years, AV block occurred during ablation was 18.8%. All of patients were not inducible AVNRT after ablationin 30 minutes. During a follow up of three and six months, the recurrence rate of AVNRT was 0.6%, permanent AV block occurred in three patients (1.9%) and regular permanent pacemaker implantation was required in one patient (0.6%). In conclusion, the radiofrequency catheter ablation with low power is a safe and effective method to manage patients with AVNRT.
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