What is the role of blood and urine cultures in the workup of spontaneous bacterial peritonitis (SBP)?

Updated: Nov 26, 2018
  • Author: Thomas E Green, DO, MPH, MMM, CPE, FACEP, FACOEP; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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Answer

Blood and urine cultures should be obtained in all patients suspected of having spontaneous bacterial peritonitis. Blood culture results are positive for the offending agent in as many as 33% of patients with spontaneous bacterial peritonitis and may help guide antibiotic therapy. Urine culture may also prove useful, since asymptomatic bacteruria has been suggested to predispose to the development of spontaneous bacterial peritonitis.


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