Three-dimensional electroanatomic mapping and radiofrequency catheter ablation of ventricular arrhythmia in a dog without structural heart disease.
J Vet Cardiol
; 39: 14-21, 2022 Feb.
Article
en En
| MEDLINE
| ID: mdl-34923431
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.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Taquicardia Ventricular
/
Ablación por Catéter
/
Complejos Prematuros Ventriculares
/
Enfermedades de los Perros
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Vet Cardiol
Asunto de la revista:
CARDIOLOGIA
/
MEDICINA VETERINARIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Estados Unidos