MITRAL-VALVE REPLACEMENT FOR THE TREATMENT OF CONGENITAL MITRAL DYSPLASIA IN A BULL TERRIER

A 10-month-old entire male bull terrier was presented with a history o f collapse on exercise. Clinical examination, electrocardiography, rad iography and echocardiography all supported a diagnosis of mitral valv e dysplasia. There was no evidence of congestive heart failure. Surgic al intervention consisted of open resection of the dysplastic mitral v alve and its replacement with a bioprosthetic valve. The procedure was performed through: a median sternotomy and the dog was placed onto fu ll cardiopulmonary bypass. Total cardiopulmonary bypass time was 70 mi nutes. A full recovery was made and at the time of writing (17 months postoperatively) the dog is clinically normal requiring no medication.