Thrombosis in Left Ventricle of a Dog Remains with Anticoagulant Therapy

Abstract

Thromboembolism commonly occurs in cats with heart disorders, but is rare in the dogs. We describe a dog with suspected thromboembolism, with the thrombus in the peripheral artery and left ventricle. A border collie suddenly presented with astasia on hind legs, and a peripheral arterial thrombus embolism was suspected. We started anticoagulant therapy with the administration of heparin, but a mass (20.6 ×18.5 mm) that was projected inside the apex of the left ventricle was found in echocardiography. The prescription was changed to dalteparin sodium, ozagrel hydrochloride, and cephalexin. Seven days after changing the treatment, the mass was reduced to 13.1× 4.9 mm. We suggest that replacing thrombolysis with antithrombotic therapy suppressed the thrombus formation.