RESUMEN
Double outlet right atrium is a rare congenital cardiac abnormality that has been previously reported in humans and cats, but not in dogs. A double outlet right atrium is typically characterized by the presence of a leftward deviation of the interatrial septum and atrial septal defect. Therefore, the right atrium drains into both ventricles. The unique features consistent with double outlet right atrium were identified by transthoracic echocardiography and computed tomography in a puppy. This case report describes the clinical, echocardiographic, and tomographic findings of a five-month-old Cocker Spaniel diagnosed with this rare congenital abnormality.
Asunto(s)
Enfermedades de los Perros , Ecocardiografía , Atrios Cardíacos , Perros , Animales , Enfermedades de los Perros/diagnóstico por imagen , Enfermedades de los Perros/congénito , Enfermedades de los Perros/diagnóstico , Ecocardiografía/veterinaria , Atrios Cardíacos/anomalías , Atrios Cardíacos/diagnóstico por imagen , Tomografía Computarizada por Rayos X/veterinaria , Masculino , Femenino , Defectos del Tabique Interatrial/veterinaria , Defectos del Tabique Interatrial/diagnóstico por imagenRESUMEN
A four-month-old domestic shorthair cat with no clinical signs was referred for further examination of a heart murmur. An echocardiogram revealed marked right atrial dilation, extending into the left hemithorax. Computed tomography angiography was conducted to investigate further, which revealed a balloon-shaped, contrast-filled cavity on the cranial and left side of the chest that connected to the right atrium through a narrow passage. This was diagnosed as a congenital right atrial diverticulum. Treatment included clopidogrel to reduce the risk of thrombus formation. Two months after the initial diagnosis, castration surgery was successfully performed without complications. The cat died suddenly at home 10 months after diagnosis. To the authors' knowledge, this is the first right atrial diverticulum reported in a cat.