Percutaneous transcatheter coil embolization of a ventricular septal defect in a dog

摘要

Percutaneous transcatheter coil embolization may be useful for closure of a ventricular septal defect. Coil occlusion should be considered as an alternative treatment for ventricular septal defects in dogs. A4-month-old male French Bulldog weighing 5,0 kg (11 Ib) was referred for a heart murmur, which was detected during treatment of otitis externa. On physical examination, the rectal temperature was 39.6°C (103.3°F) and the heart rate was 156 beats/min, A grade 3/6 systolic murmur was detected atthe left heart base, and a grade 4/6 systolic, murmur was detected at the right heart base. The color of the mucous membranes was normal. No abnormalities were detected on CBC and serum biochemical analyses. Electrocardiography revealed a normal sinus rhythm. The mean electrical axis was -5°, and severe left axis deviation was detected, A systolic murmur was recorded on both sides of the thorax by use of phonocardiography; the intensity of the murmur was louder on the right side of the thorax. Radiography of the thorax revealed dilation of the left and right ventricles, expansion of the pulmonary vessels, and slight edema of the right posterior lung lobe. Color-flow Doppler echocardiography revealed turbulent flow (known as a mosaic pattern) across the interventricular septum from the left to the right ventricle A ventricular septal defect (VSD) at the atrio-ventricular junction just beneath the sinus of Valsalva was detected on the right parasternal long axis view; aortic regurgitation was also detected (Figure 1).