Atrial and Ventricular Septal Defect with Pulmonary and Tricuspid Valvular Anomalies in a Dog

Abstract

A 15-month-old male boxer dog weighing 22 kg was referred to Azabu University Animal Hospital for evaluation of the syncopal attack.
There was no cardiac murmur, but electrocardiograms revealed an atrial fibrillation.
Thoracic radiograph revealed enlargement of the right and left atrial regions.
The medical treatment with digitalis and captopril was made for conversion from the atrial fibrillation to the sinus rhythm.
By cardiac catheterization, atrial and ventricular septal defect with pulmonary stenosis was demonstrated.
The patient died at 20 months from the first medical examination. At autopsy, there were severe enlargement of both atria, atrial defect, and pulmonary and tricuspid valvular anomalies.