Secondary peritonitis causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Shivani Chaparala M.B.B.S [2]

Overview

Secondary peritonitis has numerous causes. Nonbacterial causes of peritonitis include leakage of blood into the peritoneal cavity due to rupture of a tubal pregnancy, ovarian cyst, or aneurysmal vessel.

Causes

Common causes

• Some of the more common causes of secondary peritonitis include:
  • Perforated PUD,
  • Appendicitis,
  • Diverticulitis,
  • Acute cholecystitis,
  • Pancreatitis, and
  • Postsurgical complications.

Causes by Organ System

Cause of Peforation		Most likely organism
Nonperforation secondary peritonitis	Postoperative	Unidentified gram-negative coccobacillus Staphylococcus aureus
	Acute appendicitis	β-Hemolytic Streptococcus Klebsiella pneumoniae Clostridium perfringens Enterococcus
	Loculated perforation of gastric ulcer	Escherichia coli Group D Streptococcus Bacillus species
	Post operative gastric ulcer perforation	Staphylococcus epidermidis Proprianobacterium species Fungi
	Loculated perforation of umbilical hernia	Staphylococcus aureus
	Colonic ulcer	Enterobacter cloacae Clostridium species Enterococcus Bacteroides fragilis
	Loculated perforation of colonic polypectomy	Escherichia coli α-Streptococcus Unidentified Gram-positive organism
	Colonic ulcer	Escherichia coli
	Infected pancreaticpseudocyst	Escherichia coli