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Home / Equine Research Bank / J Vet Intern Med / Three-dimensional electro-anatomical mapping and radiofreque...
Journal of veterinary internal medicine2023; 37(2); 728-734; doi: 10.1111/jvim.16668

Three-dimensional electro-anatomical mapping and radiofrequency ablation as a novel treatment for atrioventricular accessory pathway in a horse: A case report.

Abstract: We describe the diagnosis and treatment of an atrioventricular accessory pathway (AP) in a horse using 3-dimensional electro-anatomical mapping (3D EAM) and radiofrequency catheter ablation (RFCA). During routine evaluation of the horse, intermittent ventricular pre-excitation was identified on the ECG, characterized by a short PQ interval and abnormal QRS morphology. A right cranial location of the AP was suspected from the 12-lead ECG and vectorcardiography. After precise localization of the AP using 3D EAM, ablation was performed and AP conduction was eliminated. Immediately after recovery from anesthesia an occasional pre-excited complex still was observed, but a 24-hour ECG and an ECG during exercise 1 and 6 weeks after the procedure showed complete disappearance of pre-excitation. This case shows the feasibility of 3D EAM and RFCA to identify and treat an AP in horses.
© 2023 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: 2023-03-03 PubMed ID: 36866668PubMed Central: PMC10061177DOI: 10.1111/jvim.16668Google 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.

This research shares a case where a horse’s heart rhythm problem was successfully diagnosed and eliminated using a combination of advanced 3D mapping and radiofrequency ablation treatments.

Research Context

  • The research presents a case involving a horse that had an abnormal heart rhythm, specifically, an atrioventricular accessory pathway (AP).
  • This condition was discovered during routine evaluation of the horse. The main symptom was intermittent ventricular pre-excitation, detected on an electrocardiogram (ECG).

Diagnosis Process

  • The research team used a 12-lead ECG and vectorcardiography, techniques that record the electrical activity of the heart to identify the abnormal pathway.
  • Thereafter, they utilized a more sophisticated method known as 3-dimensional electro-anatomical mapping (3D EAM). This technique provided them with a detailed 3D visualization of the heart’s electrical activity, thus enabling them to pinpoint the exact location of the AP – in this case, the right cranial location.

Treatment and Results

  • Once the exact location of the AP was identified, the team conducted a procedure known as radiofrequency catheter ablation (RFCA).
  • Essentially, RFCA is where a catheter delivers a controlled amount of radiofrequency energy to heat up and ablate or permanently inhibit the abnormal heart tissue causing the irregular rhythm.
  • Post-anesthesia, the horse still showed occasional signs of the pre-excitation. However, follow-up ECG tests conducted over a 1 and 6-week period after the procedure showed the complete disappearance of the pre-excitation.

Research Significance

  • This case demonstrates the potential effectiveness of 3D EAM and RFCA as diagnostic and treatment options for heart rhythm disorders in horses.
  • Furthermore, the success in this case supports further investigation and potential use of these techniques in veterinary cardiology.

Cite This Article

APA
Buschmann E, Van Steenkiste G, Boussy T, Vernemmen I, Schauvliege S, Decloedt A, van Loon G. (2023). 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, 37(2), 728-734. https://doi.org/10.1111/jvim.16668

Publication

Journal of veterinary internal medicine
ISSN: 1939-1676
NlmUniqueID: 8708660
Country: United States
Language: English
Volume: 37
Issue: 2
Pages: 728-734

Researcher Affiliations

Buschmann, Eva
  • Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Van Steenkiste, Glenn
  • Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Boussy, Tim
  • Department of Cardiology, AZ Groeninge, Kortrijk, Belgium.
Vernemmen, Ingrid
  • Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Schauvliege, Stijn
  • Department of Large Animal Surgery, and Anaesthesia and Orthopaedics, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Decloedt, Annelies
  • Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
van Loon, Gunther
  • Equine Cardioteam Ghent, Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.

MeSH Terms

  • Horses
  • Animals
  • Accessory Atrioventricular Bundle / surgery
  • Accessory Atrioventricular Bundle / veterinary
  • Electrocardiography / veterinary
  • Catheter Ablation / veterinary
  • Heart Rate
  • Electrocardiography, Ambulatory
  • Horse Diseases / diagnosis
  • Horse Diseases / surgery

Grant Funding

  • 1S71251N / Fonds Wetenschappelijk Onderzoek
  • 1SE9122N / Fonds Wetenschappelijk Onderzoek

Conflict of Interest Statement

Authors declare no conflict of interest.

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