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Home / Equine Research Bank / J Vet Intern Med / Detection of the origin of atrial tachycardia by 3D electro-...
Journal of veterinary internal medicine2022; 36(4); 1481-1490; doi: 10.1111/jvim.16473

Detection of the origin of atrial tachycardia by 3D electro-anatomical mapping and treatment by radiofrequency catheter ablation in horses.

Abstract: Atrial tachycardia (AT) can be treated by medical or electrical cardioversion but the recurrence rate is high. Three-dimensional electro-anatomical mapping, recently described in horses, might be used to map AT to identify a focal source or reentry mechanism and to guide treatment by radiofrequency ablation. Objective: To describe the feasibility of 3D electro-anatomical mapping and radiofrequency catheter ablation to characterize and treat sustained AT in horses. Methods: Nine horses with sustained AT. Methods: Records from horses with sustained AT referred for radiofrequency ablation at Ghent University were reviewed. Results: The AT was drug resistant in 4 out of 9 horses. In 8 out of 9 horses, AT originated from a localized macro-reentrant circuit (n = 5) or a focal source (n = 3) located at the transition between the right atrium and the caudal vena cava. In these 8 horses, local radiofrequency catheter ablation resulted in the termination of AT. At follow-up, 6 out of 8 horses remained free of recurrence. Conclusions: Differentiation between focal and macro-reentrant AT in horses is possible using 3D electro-anatomical mapping. In this study, the source of right atrial AT in horses was safely treated by radiofrequency catheter ablation.
© 2022 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals LLC on behalf of American College of Veterinary Internal Medicine.
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Publication Date: 2022-06-09 PubMed ID: 35686355PubMed Central: PMC9308432DOI: 10.1111/jvim.16473Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The study examines the use of 3D electro-anatomical mapping and radiofrequency catheter ablation for treating atrial tachycardia (AT) in horses. The research found that AT often originates from a specific location in the right atrium or the caudal vena cava, and that this method could successfully treat AT and prevent recurrences.

Objective and Methods

In this research study, the team aimed to utilise a new method, 3D electro-anatomical mapping, to pinpoint the origin of AT in horses, to better guide the treatment with radiofrequency ablation. The study involved nine horses who were pre-diagnosed with sustained AT and had been referred for radiofrequency ablation at Ghent University.

  • The 3D electro-anatomical mapping was used to create a complete layout of the electrical activity within the horse’s heart, allowing the researchers to identify where the AT was originating from.
  • The radiofrequency catheter ablation allowed the team to directly address the area from where the AT was emerging.

Results

From the nine horses in the study, AT in four was found to be resistant to drugs. The AT in eight of the nine horses was found to stem from a localized macro-reentrant circuit or a focal source, located at the transition between the right atrium and the caudal vena cava.

  • Macro-reentrant circuit refers to a condition in which the electrical signals in the heart form a circular pathway, causing rapid heartbeats.
  • A focal source refers to one specific area that is causing the rapid heartbeats.

In the eight cases where the problem area was identified, performing local radiofrequency catheter ablation resulted in the termination of AT.

Conclusions

The results of the study showed that the mentioned technique was not only effective during treatment but also in keeping AT at bay, with six out of the eight treated horses remaining free of recurrence. It was concluded that the differentiation between focal and macro-reentrant AT is feasible using 3D electro-anatomical mapping. The researchers demonstrated the use of radiofrequency catheter ablation as a safe treatment for right atrial AT in horses. Thus, this study has important implications for future treatments in veterinary cardiology.

Cite This Article

APA
Van Steenkiste G, Boussy T, Duytschaever M, Vernemmen I, Schauvlieghe S, Decloedt A, van Loon G. (2022). Detection of the origin of atrial tachycardia by 3D electro-anatomical mapping and treatment by radiofrequency catheter ablation in horses. J Vet Intern Med, 36(4), 1481-1490. https://doi.org/10.1111/jvim.16473

Publication

Journal of veterinary internal medicine
ISSN: 1939-1676
NlmUniqueID: 8708660
Country: United States
Language: English
Volume: 36
Issue: 4
Pages: 1481-1490

Researcher Affiliations

Van Steenkiste, Glenn
  • Equine Cardioteam Ghent University, Department of Large Animal Internal Medicine, Ghent University, Merelbeke, Belgium.
Boussy, Tim
  • Department of Cardiology, AZ Groeninge, Kortrijk, Belgium.
Duytschaever, Mattias
  • Department of Cardiology, AZ Sint-Jan, Bruges, Belgium.
Vernemmen, Ingrid
  • Equine Cardioteam Ghent University, Department of Large Animal Internal Medicine, Ghent University, Merelbeke, Belgium.
Schauvlieghe, Stijn
  • Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, Merelbeke, Belgium.
Decloedt, Annelies
  • Equine Cardioteam Ghent University, Department of Large Animal Internal Medicine, Ghent University, Merelbeke, Belgium.
van Loon, Gunther
  • Equine Cardioteam Ghent University, Department of Large Animal Internal Medicine, Ghent University, Merelbeke, Belgium.

MeSH Terms

  • Animals
  • Catheter Ablation / veterinary
  • Electric Countershock / veterinary
  • Electrocardiography
  • Heart Atria / surgery
  • Horse Diseases / diagnosis
  • Horse Diseases / surgery
  • Horses
  • Humans
  • Tachycardia / veterinary

Grant Funding

  • BOF.BAS.2018.0022.01 / Bijzonder Onderzoeksfonds
  • 1S56217N / Fonds Wetenschappelijk Onderzoek

Conflict of Interest Statement

Authors declare no conflict of interest.

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Citations

This article has been cited 1 times.
  1. Buschmann E, Van Steenkiste G, Boussy T, Vernemmen I, Schauvliege S, Decloedt A, van Loon G. Three-dimensional electro-anatomical mapping and radiofrequency ablation as a novel treatment for atrioventricular accessory pathway in a horse: A case report.. J Vet Intern Med 2023 Mar;37(2):728-734.
    doi: 10.1111/jvim.16668pubmed: 36866668google scholar: lookup
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