Pseudomonas aeruginosasepsis in an adult horse with enteric Salmonellosis

Objective:To report a case of enteric Salmonellosis andPseudomonas aeruginosabacteremia in an adult horse. Case summary:A 7‐year‐old mare presented for signs of acute abdominal pain. Exploratory laparotomy allowed surgical correction of right dorsal displacement of the large colon with a 180° volvulus at the cecocolic ligament. Postoperatively, the mare developed fevers, leukopenia, and diarrhea.Salmonella newportwas cultured from the feces andP. aeruginosafrom 2 consecutive blood cultures. The mare responded well to intensive medical therapy. New or unique information provided:Bacteremia associated with colitis is unusual in an adult horse, although the percentage of animals that may be bacteremic is unknown. The bacteria isolated,P. aeruginosa, a common pathogen of other sites in the horse, has not, to our knowledge, been previously reported as a cause of bacteremia and septicemia in an adult horse.