An Equine Emergency

Mindy Nelson, UC Davis
Cases/Abstracts, Winner
Das Hit presented at 2237 on 8/12/14 for an emergency visit to the Large Animal Equine Medicine service at the William R. Pritchard Veterinary Medical Teaching Hospital at the University of California, Davis. She is a 7 year-old Oldenburg mare used for dressage riding (Fig. 1) and is insured for major medical. She presented for a history of fever, neck swelling, and red-brown urine. The history of this mare’s present illness began on August 6, when her owner noted swelling and pain in the left side of the neck and called her veterinarian. Bloodwork on that day showed an elevated WBC count. The owner’s mother reported that no intramuscular injections had been given and that no respiratory, pigeon fever or strangles-like symptoms were present in any of the other horses at the farm. The treatment course from 8/6/14 to 8/12/14 included uniprim (trimethoprim sulfadiazine) reported as 2 scoops PO BID, banamine (flunixin meglumine) 10 ml IV SID, and surpass (1% diclofenac sodium) applied topically to the swelling. A fever developed a few days into the treatment (ranging from 102°-104°F) and hydroxyzine (unknown dose) and baytril (enrofloxacin; reported as 2 scoops PO BID) were added to the regimen. On 8/12/14, the day of presentation, the mare developed a fever of 106°F and her urine was noted to be dark red-brown in color (Fig. 2), so she was referred to the VMTH.


