Peer-reviewed veterinary case report
High-density mapping improves diagnosis of vena cava tachycardia
By Siess, S et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2025·Department of Clinical Sciences, United States·View original on PubMed →
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Original publication title: High-density versus point-by-point electroanatomical activation mapping of a cranial vena cava tachycardia in a dog.
- Species:
- dog
Plain-English summary
A 7-year-old male Newfoundland was brought in for treatment of a fast heart rate known as supraventricular tachycardia. The veterinarian used a special mapping system to visualize the heart's electrical activity, which helped identify the problem area near the cranial vena cava. Initially, they couldn't target the issue due to its location near a nerve, but later, a more detailed mapping technique allowed for better identification of the heart's abnormal signals. This improved method helped guide the treatment effectively.
People also search for: dog fast heart rate treatment · Newfoundland heart problems · catheter ablation for dogs
Abstract
A seven-year-old, male intact Newfoundland was referred for catheter ablation of supraventricular tachycardia. Activation mapping was performed using an electroanatomical mapping system to visualize the activation wavefront in a color-coded fashion on an anatomical shell. Atrial flutter with an early-meets-late signal (i.e. suspected isthmus) at the cranial vena cava was most suspected, but could not be targeted due to overlap with the phrenic nerve. On follow-up, a more complete high-density map better outlined the suspected circuit and substrate of cranial vena cava flutter. Compared to point-by-point catheters, high-density mapping catheters enhance identification and annotation of low-amplitude electrogram signals.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39736223/