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  • Author or Editor: Malgorzata A. Pozor x
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in Journal of the American Veterinary Medical Association

  • Management of urolithiasis in horses varies depending on the size and number of calculi, their location in the urinary tract, sex of the patient, and availability of surgical facilities.

  • The recommended method for removal of cystic calculi in stallions and geldings is surgery; however, medical treatment consisting of lavaging the bladder and administering antibiotics and antiinflammatory drugs may be successful if the calculi are small.

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in Journal of the American Veterinary Medical Association


Case Description—A 4-year-old Thoroughbred mare was evaluated because of placental abnormalities and a retained placental remnant.

Clinical Findings—Microbial culture of the placenta yielded pure growth of Amycolatopsis spp. Histologic examination of the placenta revealed a focally expanding chorionitis with intralesional gram-positive filamentous bacilli and multifocal allantoic adenomatous hyperplasia on the apposing allantoic surface.

Treatment and Outcome—Treatment with lavage and oxytocin resulted in expulsion of the placental remnant within hours of parturition. The mare did not become pregnant again despite multiple breedings. The foal appeared healthy but died of complications during an elective surgical procedure at 7 weeks of age.

Conclusions and Clinical Relevance—To the author's knowledge, all previously confirmed cases of nocardioform placentitis have been in mares bred in the central Kentucky region. Indications that the pathogen in the mare reported here is a different species than that isolated in Kentucky suggest that this is an emerging disease. Mares with nocardioform placentitis usually do not have the same clinical signs as mares with placentitis resulting from an ascending pathogen.

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in Journal of the American Veterinary Medical Association