Peer-reviewed veterinary case report
Horse with heart issue treated with mapping and ablation
By Buschmann, Eva et al.·Published in Journal of veterinary internal medicine·2023·Department of Internal Medicine·View original on PubMed →
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Original publication title: Three-dimensional electro-anatomical mapping and radiofrequency ablation as a novel treatment for atrioventricular accessory pathway in a horse: A case report.
- Species:
- horse
Plain-English summary
In this case, a horse was diagnosed with an atrioventricular accessory pathway, which is an abnormal electrical connection in the heart. During a routine check-up, the horse showed signs of irregular heartbeats on the ECG, prompting further investigation. The veterinary team used a special technique called 3-dimensional electro-anatomical mapping to locate the problem area in the heart and then performed a procedure to destroy the abnormal pathway using radiofrequency energy. Although there were still some irregularities right after the horse woke up from anesthesia, follow-up tests showed that the problem had completely resolved after a few weeks. This case demonstrates that these advanced techniques can effectively treat this heart condition in horses.
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.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/36866668/