![]() However, there are only a few experiences published of using three-dimensional electroanatomic mapping systems with a completely zero-fluoroscopy (ZF) approach. Some studies have demonstrated these systems enable ablation of supraventricular tachycardia (SVT) substrates with significantly decreased radiation exposure to both patients and staffs compared to conventional fluoroscopy-guided ablation. ![]() In recent years, non-fluoroscopic three-dimensional electroanatomic mapping systems (such as Ensite NavX and Carto) have been introduced to facilitate catheter ablation procedures. Thus, the American College of Cardiology recommends the adoption of the “ALARA” (as low as reasonably achievable) principle in all interventional laboratories. These effects are cumulative and give rise to great concerns especially in a younger population, which highlights the importance of reducing radiation exposure during cardiac electrophysiology procedures. However, fluoroscopy requires the administration of ionizing radiation, which carries non-negligible stochastic and deterministic effects on health for both patients and staffs. Radiofrequency catheter ablation (RFCA) procedures are traditionally performed under the guidance of fluoroscopy that is a highly effective way to navigate catheters and to monitor their location. The success rate for this procedure is greater than 90% for supraventricular tachycardia such as atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular re-entrant tachycardia (AVRT). ![]() Catheter ablation (CA) has become the gold standard for the treatment of symptomatic and recurrent supraventricular tachycardia (SVT). Over the past two decades, the cardiac electrophysiology field has undergone great changes and development. Trial registrationĬ Identifier: NCT03042078 first registered Februretrospectively registered. The completely zero-fluoroscopy approach demonstrated safety and efficacy comparable to a conventional fluoroscopy approach for catheter ablation of supraventricular tachycardia, and mitigated radiation exposure to both patients and operators. Compared with the conventional fluoroscopy approach, the zero-fluoroscopy approach provided similar outcomes without compromising the safety or efficacy of the procedure. There was no significant difference between the zero-fluoroscopy group and conventional fluoroscopy group as to procedure time (60.3 ± 20.3 vs. Totally, 1020 patients were enrolled in ZF group 2040 patients ablated by CF approach were selected for controls. Patients with atrial tachycardia were excluded. Consecutive patients referred for catheter ablation of supraventricular tachycardia were assigned either to a completely zero-fluoroscopic approach (ZF) or conventional fluoroscopy approach (CF) according to the operator’s preference. MethodsĪ multicenter prospective non-randomized registry study was performed in seven centers from January 2013 to February 2018. We aimed to investigate the safety, feasibility and efficacy of a completely zero-fluoroscopy approach for catheter ablation of supraventricular tachycardia using the Ensite NavX navigation system compared with a conventional fluoroscopy approach. Three-dimensional electroanatomic mapping systems have demonstrated a significant reduction in radiation exposure during radiofrequency catheter ablation procedures.
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