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Tetralogy of Fallot in a 2-year-old Holstein heifer:

  • Animals--Cattle/Abnormalities--Cattle Diseases/Diagnosis/Etiology--Endocarditis/Etiology/Veterinary-
  • Medicine


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.

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