Atrioventricular accessory pathways in 89 dogs: Clinical features and outcome after radiofrequency catheter ablation

Journal of Veterinary Internal Medicine
Kathy N WrightPhilip H Kass

Abstract

Atrioventricular accessory pathways (APs) in dogs have been reported rarely. Data regarding clinical presentation and long-term outcome after radiofrequency catheter ablation (RFCA) are limited. To study clinical features, electrophysiologic characteristics, and outcome of RFCA in dogs with APs. Eighty-nine dogs presented consecutively for RFCA of APs. Case series. Labrador retrievers (47.2% of dogs) and male dogs (67.4% of dogs) were most commonly affected. Labrador retrievers were more likely to be male than non-Labrador breeds (P = .043). Clinical signs were nonspecific and most commonly included lethargy and gastrointestinal signs. Concealed APs were more prevalent in Labrador retrievers than other breeds (P = .001). Right-sided APs (91.7%) predominated over left-sided (8.3%). Tachycardia-induced cardiomyopathy (TICM) occurred in 46.1% of dogs, with complete resolution or substantial improvement noted on one-month postablation echocardiograms. Radiofrequency catheter ablation successfully eliminated AP conduction long term in 98.8% of dogs in which it was performed. Complications occurred in 5/89 dogs. Recurrence in 3 dogs was eliminated long term with a second procedure. Accessory pathways are challenging to recognize in d...Continue Reading

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Citations

Jun 22, 2019·Journal of Veterinary Internal Medicine·Kathy N WrightHolly M Irvin
May 26, 2021·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·O BelachsenJ Sargent
Jun 21, 2021·The Veterinary Journal·Celine Brugada-TerradellasPascale Smets
Sep 14, 2021·Journal of the American Veterinary Medical Association·Beatriz de C P VilaMarlos G Sousa

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