Peer-reviewed veterinary case report
Cat with irregular heartbeats treated by 3D mapping and ablation
By Hsue, W et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2022·Hospital of the University of Pennsylvania, United States·View original on PubMed →
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Original publication title: Three-dimensional electroanatomic mapping and radiofrequency catheter ablation of ventricular arrhythmia in a dog without structural heart disease.
- Species:
- dog
Plain-English summary
A 1.5-year-old female mix-breed dog was brought in for shaking and excessive panting due to a heart rhythm problem called ventricular arrhythmia (VA). After tests showed no structural heart disease, the vet used a special mapping technique and radiofrequency ablation to target the area causing the arrhythmia. The procedure involved delivering energy to the heart to correct the abnormal rhythm. One month later, the dog showed significant improvement, and a follow-up monitor confirmed that the arrhythmia had completely resolved.
People also search for: dog shaking and panting · ventricular arrhythmia treatment in dogs · heart rhythm problems in dogs
Abstract
A 1.5-year-old, female-spayed mix-breed dog was presented with recurrent episodes of shaking and excessive panting attributed to drug-refractory ventricular arrhythmia (VA) characterized predominantly by incessant periods of ventricular bigeminy. The VA had a narrow QRS morphology, suggestive of an origin near the His bundle or fascicular system. Diagnostic evaluation found no structural heart disease or underlying etiology. Three-dimensional electroanatomic mapping and radiofrequency catheter ablation were pursued. Voltage mapping demonstrated normal bi-ventricular voltage (≥1.5 mV) without any fractionated or multicomponent electrograms, indicating the absence of ventricular myocardial scar. Pace mapping identified an endocardial origin of the VA at the basal anterior septum of the left ventricle, distal to the His bundle and near the left bundle branch. Two ablation lesions were delivered to this site, and a left bundle branch block was temporarily induced. The dog recovered uneventfully. One month later, the owners reported a remarkable improvement in clinical signs, and follow-up 48-h Holter monitor found complete resolution of VA.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34923431/