PubMed · 3312678
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E Patten. 1987-11-27. Immunohematologic diseases.. https://pubmed.ncbi.nlm.nih.gov/3312678/
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A 5-year-old female American Quarter Horse was determined to have immune-mediated hemolytic anemia after detection of a positive response to a direct Coombs' test. Penicillin-induced immune-mediated hemolytic anemia was confirmed via a direct antiglobulin test, using penicillin-coated RBC. The horse was clinically improved and the anemia resolved in response to supportive care and discontinuation of penicillin treatment. Penicillin should be considered a possible cause of immune-mediated hemolytic anemia in horses.
Severe anemia was found in a 4-month-old heifer, which was admitted with a 1-day history of anorexia, signs of depression, and recumbency. A diagnosis of immune-mediated hemolytic anemia (IHA) was made on the basis of a Coomb's titer of 1:128 and decreased resistance to osmotic stress, as determined by an RBC fragility test. Anaplasmosis and leptospirosis were ruled out as possible causes of the IHA. Other causes of hemolytic anemia, including intoxication by copper, water, Brassica spp, or drugs were ruled out. Therefore the IHA was considered idiopathic. Treatment consisted of supportive therapy, oxytetracycline, and dexamethasone. After 60 days of treatment, CBC, Coomb's test result, and RBC fragility were within normal limits.