What are the common etiologies of secondary peritonitis (SP)?

Updated: Jul 23, 2019
  • Author: Brian J Daley, MD, MBA, FACS, FCCP, CNSC; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Worldwide, secondary peritonitis accounts for about 1% of urgent/emergent hospital admissions and is the second most common cause of sepsis in intensive care units. [9] Common etiologic entities of secondary peritonitis (SP) include perforated appendicitis; perforated gastric or duodenal ulcer; perforated (sigmoid) colon caused by diverticulitis, volvulus, or cancer; and strangulation of the small bowel (see Table 1). Necrotizing pancreatitis can also be associated with peritonitis in the case of infection of the necrotic tissue.

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