Supplemental embolization coil implantation for closure of patent ductus arteriosus in a beagle dog

Embolization coil for the occlusion of patent ductus arteriosus (PDA) was i nserted in a beagle dog diagnosed as PDA with systolic murmur. Residual shu nt was observed three months postoperatively and then supplemental coil was inserted. In the past only one coil was required for the closure of PDA in our cases with good post-operative results. In this case, however, the lar gest coil presently available (8 mm in diameter with 5 loops) was inadequat e to make sufficient closure within 3 months postoperatively and supplement al coil insertion was necessary to produce a successful occlusion.