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Herzschrittmachertherapie + Elektrophysiologie

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10.11.2023 | Original Contributions

Zero-fluoro atrioventricular-nodal reentrant tachycardia ablation

verfasst von: Christina Soether, MD, Andreas A. Boehmer, MD, Bianca C. Dobre, MD, Bernhard M. Kaess, MD, Joachim R. Ehrlich, MD, FESC, FHRS, FAHA

Erschienen in: Herzschrittmachertherapie + Elektrophysiologie | Ausgabe 4/2023

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Abstract

Background

Atrioventricular-nodal reentrant tachycardia (AVNRT) is a common supraventricular tachycardia, particularly in younger patients. The treatment of choice is radiofrequency catheter ablation (RFCA), traditionally necessitating ionizing radiation for catheter guidance.

Objective

The authors aimed to demonstrate the feasibility and safety of zero-fluoroscopy RFCA of AVNRT using EnSite™ NavX™ as a three-dimensional (3D) electroanatomical mapping system (EAM).

Methods

The authors retrospectively analyzed 68 patients that underwent AVNRT-RFCA. One group was a priori allocated to conventional fluoroscopy mapping (convFluoro, n = 30). In 38 cases, the electrophysiologist chose to use 3D-EAM for ablation. Of these patients, 20 could be ablated without fluoroscopy use (zeroFluoro). In 18 cases that were initially intended as 3D-EAM, additional fluoroscopy use was necessary due to difficult anatomic conditions (convertedFluoro). Procedure duration, fluoroscopy duration and dose, as well as complications were analyzed.

Results

Procedure duration was similar for the convFluoro and zeroFluoro groups (74 ± 24 min vs. 80 ± 26 min, p = ns). The convertedFluoro group showed longer procedure duration compared to the convFluoro group (94 ± 30 min vs. 74 ± 24 min, p < 0.05). The use of 3D-EAM significantly reduced fluoroscopy duration comparing the convFluoro with the convertedFluoro group (12 ± 9 min vs. 7 ± 6 min, p < 0.05). The difference in fluoroscopy dose between convFluoro and convertedFluoro did not reach significance (169 ± 166 cGycm² vs. 134 ± 137 cGycm², p = ns). In zeroFluoro cases, no radiation was used at all. 3D-EAM-guided RFCA was primarily successful in all patients. Overall, there were only few minor complications in the different groups. No major complications occurred.

Conclusion

Zero-fluoro RFCA in patients with AVNRT is feasible and safe. 3D-EAM can reduce radiation exposure in the majority of patients without prolonging procedure duration or increasing complications.

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Titel: Zero-fluoro atrioventricular-nodal reentrant tachycardia ablation
verfasst von: Christina Soether, MD
Andreas A. Boehmer, MD
Bianca C. Dobre, MD
Bernhard M. Kaess, MD
Joachim R. Ehrlich, MD, FESC, FHRS, FAHA
Publikationsdatum: 10.11.2023
Verlag: Springer Medizin
Erschienen in: Herzschrittmachertherapie + Elektrophysiologie / Ausgabe 4/2023
Print ISSN: 0938-7412
Elektronische ISSN: 1435-1544
DOI: https://doi.org/10.1007/s00399-023-00977-w

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