Closure of patent ductus arteriosus by transarterial coil embolization in two dogs

摘要

Non-surgical occlusion of persistent ductus arteriosus (PDA) by catheter guided coil embolization was performed in 2 dogs. In both dogs the procedure was performed through the femoral artery. The exact location and the narrowest diameter of the PDAwere evaluated angiographically after injection of contrast medium into the ascending aorta. Based on shunt diameter measurements of 4 mm in dog no. 1 and 2.4 mm in dog no. 2, coil diameters of 8 mm and 5 mm were chosen, respectively. The coils were placed within the shunt vessel under fluoroscopic guidance using the Cook delivery-system for detachable PDA coil. The success of the procedure was documented angiographically 10 min after coil release. The shunt vessel was completely occluded in dog no. 1,while minimal blood flow was detected in dog no. 2 at that time. It is concluded that the technique of transvascular PDA closure compares favourably with the traditional surgical technique.