Abstract
A 3-year-old male Tibetan spaniel weighing 5.8 kg was presented with severe cardiac murmur. A grade V and III/VI systolic murmur was auscultated, loudest at the left cardiac base and the right cardiac apex, respectively. Echocardiography revealed severe pulmonic stenosis (pressure gradient 104 mmHg), and membranous ventricular septal defect (6 mm diameter), and mild aortic regurgitation. Using extracorporeal circulation, cardiotomy was performed, the septal defect was closed by direct mattress suture and the valvular stenosis was corrected by valvulotomy and patch-graft technique. Three months after surgery, pulmonic stenosis was improved (pressure gradient 53 mmHg), and shunting flow and aortic regurgitation was disappeared. This case was considered that successful correction of pulmonic stenosis with ventricular septal defect by cardiotomy using cardiopulmonary bypass.
