The peritoneum is the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs. Peritonitis is present when this tissue becomes inflamed or infected. Secondary peritonitis is when another condition is the cause.
Secondary peritonitis has several major causes.
An infection of the bloodstream (sepsis) may lead to an infection in the abdomen also. This is a severe illness.
This tissue may become infected when there is no clear cause.
Necrotizing enterocolitis occurs when the lining of the intestinal wall dies. This problem nearly always develops in an infant who is ill or born early.
Note: There may be signs of shock.
Tests may include:
Often, surgery is needed to remove or treat sources of infection. These may be an infected bowel, an inflamed appendix, or an abscess or perforated diverticulum.
General treatment includes:
The outcome can range from complete recovery to overwhelming infection and death. Factors that determine the outcome include:
Complications may include:
Call your provider if you have symptoms of peritonitis. This is a serious condition. It needs emergency treatment in most cases.
Mathews JB, Turaga K. Surgical peritonitis and other diseases of the peritoneum, mesentery, omentum, and diaphragm. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 39.
Turnage RH, Mizell J, Badgwell B. Abdominal wall, umbilicus, peritoneum, mesenteries, omentum, and retroperitoneum. In: Townsend CM Jr, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 20th ed. Philadelphia, PA: Elsevier; 2017:chap 43.BACK TO TOP
Review Date: 4/2/2020
Reviewed By: Michael M. Phillips, MD, Clinical Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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