Acute Outcomes of Radiofrequency Catheter Ablation in Patients with Typical Atrioventricular Nodal Reentrant Tachycardia: A Single-Center Study | [Pakistan Heart Journal • 2024]

Author(s):

1. Waqar Hasan: Punjab Institute of Cardiology, Lahore, Pakistan

2. Hafiz Abdul Mannan Shahid: Punjab Institute of Cardiology, Lahore, Pakistan

3. Imran Saleem: Punjab Institute of Cardiology, Lahore, Pakistan

4. Amna Zafar Qureshi: University of child Health Sciences, The Children Hospital, Lahore, Pakistan

5. Usman Mahmood Butt: Allama Iqbal Medical College / Jinnah Hospital, Lahore, Pakistan

Abstract:

Objectives: This study aimed to evaluate the acute outcomes of radiofrequency catheter ablation (RFA) in patients diagnosed with typical atrioventricular nodal reentrant tachycardia (AVNRT). Methodology: This retrospective study was conducted at the Punjab Institute of Cardiology, Lahore, from January 1, 2019, to March 31, 2020. A total of 100 patients, each exhibiting at least one episode of sustained narrow QRS complex tachycardia, were included using a consecutive sampling technique. Following electrophysiological (EP) studies, RFA of the slow pathway was performed to successfully terminate the tachycardia. Results: The study cohort comprised 78% females, with a mean symptom duration of 9.67 ± 4.8 years, and all patients reported palpitations as a primary symptom. The mean fluoroscopy time was 15.7 ± 3.2 minutes, and the mean procedure time was 1.52 ± 0.22 hours. Successful non-inducibility of typical AVNRT was achieved in 99% of patients. Slow pathway (SP) elimination was achieved in 46% of cases, while SP modification was noted in 53%, with 8% of these cases showing one AV node echo beat post-ablation. Only one patient (1%) developed a permanent atrioventricular (AV) block. Conclusion: Radiofrequency catheter ablation is a highly effective and safe treatment for patients with typical AVNRT who are refractory to drug therapy, demonstrating an acute success rate of 99% with minimal risk of complications in our center.

Page(s): 304-309

DOI: 10.47144/phj.v57i4.2761

Published: Journal: Pakistan Heart Journal, Volume: 57, Issue: 4, Year: 2024

Keywords:

Tachycardia , Radiofrequency catheter ablation , slow pathway , Typical AVNRT

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