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Bacterial Peritonitis in Cats

Jan 04, 2010
Ruthrauff CM, Smith J, Glerum L. Primary bacterial septic peritonitis in cats: 13 cases. J Am Anim Hosp Assoc. Nov-Dec 2009;45(6):268-276.

Primary septic peritonitis is an abdominal infection without a primary focus, such as a perforated bowel. The most common cause in cats is feline infectious peritonitis. Little is known about primary bacterial septic peritonitis in cats. The investigators examined the medical records of twelve cats diagnosed with primary bacterial septic peritonitis and identified significant characteristics associated with this condition. The overall mortality rate was 31%, and cats that experienced clinically significant decreased heart rates and hypothermia did not survive. Other clinical findings were similar to cats with septic peritonitis from identifiable causes (e.g., fever, abdominal pain, elevated white blood cell counts, elevated serum bilirubin). All cats had anaerobic bacteria isolated from the infection; these microbes are common in the gastrointestinal tract. This would indicate that in these cases, antibiotic treatment directed against anaerobes should be effective. All but two of the organisms identified in these cases are common oral flora, but gingival disease was not found to be a contributor. For primary bacterial septic peritonitis, a mechanism for inoculation of the bacteria into the abdomen has yet to be determined, but an oral source is suggested. The investigators concluded that cats with primary bacterial septic peritonitis have a fair to good prognosis if they are treated aggressively prior to development of shock. This treatment should include surgical intervention, nutritional support, and appropriate antibiotic therapy. [MK]

Related Articles:
King LG. Postoperative complications and prognostic indicators in dogs and cats with septic peritonitis: 23 cases (1989-1992). J Am Vet Med Assoc. Feb 1 1994;204(3):407-414.

Bonczynski JJ, Ludwig LL, Barton LJ, Loar A, Peterson ME. Comparison of peritoneal fluid and peripheral blood pH, bicarbonate, glucose, and lactate concentration as a diagnostic tool for septic peritonitis in dogs and cats. Vet Surg. Mar-Apr 2003;32(2):161-166.
bacterial peritonitis

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