Tetralogy of Fallot in a 2-year-old Holstein heifer
McKenna, Shawn L.Barkema, H. W.McClure, J. TrentonRogers, L. A.
The Canadian Veterinary Journal. La Revue Veterinaire Canadienne
A 2-year-old, purebred Holstein heifer with exercise intolerance and cardiovascular compromise was diagnosed at postmortem with tetralogy of Fallot, which typically results in death within a few months of life. Survival past the age of 2 was unexpected. The concurrent endocarditis of the pulmonic valve is discussed.