CONTRAST ECHOAORTOGRAPHY AS AN AID IN THE DIAGNOSIS OF RIGHT-TO-LEFT SHUNTING PATENT DUCTUS-ARTERIOSUS

Contrast echocardiography has traditionally been used in conjunction with conventional echocardiography to document right-to-left intracardiac shunting congenital anomalies, This technique does not clearly demonstrate shunting of blood in patients with right-to-left patent ductus arteriosus, as the shunt is extracardiac, We used a variation of contract echocardiography, contrast echoaortography, to confirm the presence of a right-to left shunting patent ductus arteriosus in two dogs.