Key result
Catheter ablation of SVT using exclusively intracardiac ultrasound guidance achieved 100% intraoperative success, with freedom from recurrence similar to fluoroscopy in AVNRT.
Why the study?
The study evaluated the efficacy and safety of catheter ablation of SVT using exclusively intracardiac ultrasound compared to the conventional fluoroscopic approach.
Does catheter ablation using exclusively intracardiac ultrasound guidance maintain efficacy and safety compared to a conventional fluoroscopic approach in patients with SVT?
Cohort (n=170)
Does catheter ablation using exclusively intracardiac ultrasound guidance maintain efficacy and safety compared to a conventional fluoroscopic approach in patients with SVT?
Catheter ablation of SVT using exclusively intracardiac ultrasound is as safe and effective as conventional fluoroscopy, while eliminating radiation exposure and reducing procedure time in AVNRT.
Answers are grounded in this paper and cite their sources.
Supports feasibility of fluoroscopy-free SVT ablation; leaves open randomized confirmation before practice change.
Objective. To evaluate the efficacy and safety of catheter ablation of supraventricular tachycardia (SVT) using exclusively intracardiac ultrasound compared to conventional fluoroscopic approach. Material and methods. There were 170 patients with SVT (85 patients in each group): 128 ones with atrioventricular nodal reentry tachycardia (AVNRT) and 42 ones with atrioventricular re-entry tachycardia (AVRT). In the non-fluoroscopic group, ablation was performed under intracardiac ultrasound guidance. The follow-up period was 12 months. Results. Intraoperative success rate was 100% in both groups. Freedom from recurrence was comparable among patients with AVNRT (90.6% vs. 93.75%, p=0.74) and AVRT (95.2% vs. 95.2%). Safety of procedures was also similar (AVNRT 4.7% vs. 0%, p=0.24; AVRT 0% vs. 0%). Fluoroscopy was used in none patient who underwent the procedure under intracardiac ultrasound guidance (p < 0.001). However, surgery time and overall RF-ablation time was significantly shorter in the non-fluoroscopic group among patients with AVNRT. Conclusion. Catheter ablation of SVT under intracardiac ultrasound control is possible without fluoroscopy and electrophysiological navigation. This procedure is effective and safe.
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Podianov et al. (2024) conducted a cohort in Supraventricular tachycardia (SVT) (n=170). Catheter ablation using exclusively intracardiac ultrasound guidance vs. Conventional fluoroscopic approach was evaluated on Freedom from recurrence among patients with AVNRT (p=0.74). Catheter ablation of SVT using exclusively intracardiac ultrasound guidance achieved 100% intraoperative success, with freedom from recurrence similar to fluoroscopy in AVNRT.
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