Abstract
A 4-month-old dog with patent ductus arteriosus was suspected with severe pulmonary hypertension and consequently, surgical ligation was performed. Preoperative echocardiography did not show a left to right shunt; hence, development of pulmonary hypertension was suspected. After the surgery, the dog developed syncope and thoracic radiography and echocardiography findings worsened; this led us to suspect progression of pulmonary hypertension and right-side heart failure. One month later, thoracic radiography and echocardiography findings improved and the symptom on exertion disappeared. The present case suggests surgical closure as a treatment option in dogs with patent ductus arteriosus suspected pulmonary hypertension.
