Peritonitis causes

Peritonitis Main Page
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Overview
Causes
Classification Spontaneous Bacterial Peritonitis Secondary Peritonitis
Differential Diagnosis

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

Overview

The most common cause of peritonitis is perforation of a hollow viscus such as perforation of the distal esophagus (Boerhaave syndrome), of the stomach (peptic ulcer, gastric carcinoma), of the duodenum (peptic ulcer), of the remaining intestine (e.g. appendicitis, diverticulitis, Meckel's diverticulum, IBD, intestinal infarction, intestinal strangulation, colorectal carcinoma, meconium peritonitis), or of the gallbladder (cholecystitis). Other causes of infected peritonitis include spontaneous bacterial peritonitis and disruption of the peritoneum, such as in cases of trauma, surgical wounds, continuous peritoneal dialysis, and intra-peritoneal chemotherapy. Causes of non-infected peritonitis include endometriosis, blunt abdominal trauma, gastric carcinoma, peptic ulcer, pelvic trauma, and pancreatitis.

Causes

Causes of peritonitis can be divided into infected and non-infected, which are as follows:

Infected peritonitis

Perforation of a hollow viscus	Disruption of the peritoneum	Spontaneous bacterial peritonitis (SBP)	Systemic infections
Perforation of a hollow viscus (most common cause of peritonitis) -perforation of the distal esophagus (Boerhaave syndrome) -perforation of the stomach (peptic ulcer, Gastric carcinoma) -perforation of the duodenum (peptic ulcer) -perforations of the remaining intestine (e.g. Appendicitis, Diverticulitis, Meckel diverticulum, IBD, Intestinal infarction, Intestinal strangulation, Colorectal carcinoma, Meconium peritonitis) -perforation of the gallbladder (cholecystitis) Other possible causes for perforation -Trauma, -Ingestion of a sharp foreign body (such as a fish bone) -perforation by an endoscope or catheter Most common organisms -mixed bacteria -Gram-negative bacilli (e.g. Escherichia coli), Anaerobic bacteria (e.g. Bacteroides fragilis)	-Trauma -surgical wound -peritoneal dialysis -chemotherapy Most common organisms -mixed bacteria Staphylococcus aureus, Coagulase-negative staphylococci, Fungi such as Candida	peritonitis occurring in the absence of an obvious source of contamination. It occurs either in children, or in patients with ascites.	Ex- Tuberculosis

Non-infected peritonitis

Leakage of sterile body fluids into the peritoneum	Sterile abdominal surgery	Rarer non-infectious causes
Sterile body fluids such as -Blood(e.g.[[Endometriosis, Blunt abdominal trauma), -Gastric juice (e.g.Peptic ulcer, Gastric carcinoma), -Bile (e.g. Liver biopsy), -Urine (e.g. Pelvic trauma), -Menstruum (e.g. salpingitis), -Pancreatic juice (pancreatitis), These body fluids are sterile at first, they frequently become infected once they leak out of their organ, leading to infectious peritonitis within 24-48h. Infected peritonitis Perforation of a hollow viscus is the most common cause of peritonitis. Examples include perforation of the distal esophagus (Boerhaave syndrome), of the stomach (peptic ulcer, gastric carcinoma, of the duodenum (peptic ulcer), of the remaining intestine (e.g. appendicitis, diverticulitis, Meckel diverticulum, IBD, intestinal infarction, intestinal strangulation, colorectal carcinoma, meconium peritonitis), or of the gallbladder (cholecystitis). Other possible reasons for perforation include trauma, ingestion of a sharp foreign body (such as a fish bone), perforation by an endoscope or catheter, and anastomotic leakage. The latter occurrence is particularly difficult to diagnose early, as abdominal pain and ileus paralyticus are considered normal in patients who just underwent abdominal surgery. In most cases of perforation of a hollow viscus, mixed bacteria are isolated; the most common agents include gram-negative bacilli (e.g. Escherichia coli) and anaerobic bacteria (e.g. Bacteroides fragilis). Disruption of the peritoneum, even in the absence of perforation of a hollow viscus, may also cause infection simply by letting micro-organisms into the peritoneal cavity. Examples include trauma, surgical wound, continuous ambulatory peritoneal dialysis, and intra-peritoneal chemotherapy. Again, in most cases mixed bacteria are isolated; the most common agents include cutaneous species such as Staphylococcus aureus, and coagulase-negative staphylococci, but many others are possible, including fungi such as Candida. Spontaneous bacterial peritonitis (SBP) is a peculiar form of peritonitis occurring in the absence of an obvious source of contamination. It occurs either in children, or in patients with ascites. See the article on spontaneous bacterial peritonitis for more information. Systemic infections (such as tuberculosis) may rarely have a peritoneal localization. Non-infected peritonitis Leakage of sterile body fluids into the peritoneum, such as blood (e.g.endometriosis, blunt abdominal trauma), gastric juice (e.g. peptic ulcer, gastric carcinoma),bile (e.g. liver biopsy), urine (pelvic trauma), menstruum (e.g. salpingitis), pancreatic juice (pancreatitis), or even the contents of a ruptured dermoid cyst. It is important to note that, while these body fluids are sterile at first, they frequently become infected once they leak out of their organ, leading to infectious peritonitis within 24-48h. Sterile abdominal surgery normally causes localized or minimal generalized peritonitis, which may leave behind a foreign body reaction and/or fibrotic adhesions. Obviously, peritonitis may also be caused by the rare, unfortunate case of a sterile foreign body inadvertently left in the abdomen after surgery (e.g. gauze,sponge). Much rarer non-infectious causes may include familial Mediterranean fever, porphyria, and systemic lupus erythematosus. Causes by Organ System Cardiovascular No underlying causes Chemical/Poisoning No underlying causes Dental No underlying causes Dermatologic No underlying causes Drug Side Effect No underlying causes Ear Nose Throat No underlying causes Endocrine No underlying causes Environmental No underlying causes Gastroenterologic Appendicitis, Ascites, Boerhaave syndrome, Cholecystitis, Cholelithiasis, Chronic liver disease, Diverticulitis, Gall bladder rupture, Gastrointestinal perforation, IBD, Intestinal strangulation, Mallory-Weiss syndrome, Meckel diverticulitis, Meconium peritonitis, Neonatal necrotizing enterocolitis, Pancreatitis, Peptic ulcer, Perihepatitis, Recurrent hereditary polyserositis, Toxic megacolon, Typhlitis Genetic No underlying causes Hematologic No underlying causes Iatrogenic Continuous ambulatory peritoneal dialysis, Intra-peritoneal chemotherapy, Surgical wounds Infectious Disease Bacteroides fragilis, E. coli, Enterobacteriaceae, Escherichia coli, Fitz-Hugh Curtis syndrome, Klebsiella pneumoniae, Pseudomonas, Staphylococcus, Streptococcus pneumoniae, Streptococcus pyogenes, Miliary tuberculosis Musculoskeletal/Orthopedic No underlying causes Neurologic No underlying causes Nutritional/Metabolic No underlying causes Obstetric/Gynecologic Endometriosis, Fitz-Hugh Curtis syndrome, Pelvic inflammatory disease Oncologic Colorectal carcinoma Ophthalmologic No underlying causes Overdose/Toxicity No underlying causes Psychiatric No underlying causes Pulmonary No underlying causes Renal/Electrolyte Nephritic syndrome Rheumatology/Immunology/Allergy Systemic lupus erythematosus, Sexual No underlying causes Trauma Trauma Urologic No underlying causes Miscellaneous Ruptured dermoid cyst, Spontaneous bacterial peritonitis Causes in Alphabetical Order The unnamed parameter 2= is no longer supported. 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