Ischemic colitis overview: Difference between revisions
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==Causes== | ==Causes== | ||
Causes of the reduced blood flow can include changes in the systemic circulation (e.g. [[hypotension|low blood pressure]]) or local factors such as [[vasoconstriction|constriction of blood vessels]] or a [[blood clot]]. In most cases, no specific cause can be identified.<ref>Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.</ref> | Causes of the reduced blood flow can include changes in the systemic circulation (e.g. [[hypotension|low blood pressure]]) or local factors such as [[vasoconstriction|constriction of blood vessels]] or a [[blood clot]]. In most cases, no specific cause can be identified.<ref>Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.</ref> | ||
==Differentiating Ischemic Colitis from other Diseases== | |||
Ischemic colitis must be differentiated from the many other causes of [[abdominal pain]] and [[lower gastrointestinal bleeding|rectal bleeding]] (for example, [[infection]], [[inflammatory bowel disease]], [[diverticulosis]], or [[colon cancer]]). | |||
It is also important to differentiate ischemic colitis, which often resolves on its own, from the more immediately life-threatening condition of acute mesenteric ischemia of the [[small bowel]]. | |||
==Epidemiology and Demographics== | ==Epidemiology and Demographics== | ||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Overview
Ischemic colitis is a medical condition in which inflammation and injury of the large intestine result from inadequate blood supply.
Causes
Causes of the reduced blood flow can include changes in the systemic circulation (e.g. low blood pressure) or local factors such as constriction of blood vessels or a blood clot. In most cases, no specific cause can be identified.[1]
Differentiating Ischemic Colitis from other Diseases
Ischemic colitis must be differentiated from the many other causes of abdominal pain and rectal bleeding (for example, infection, inflammatory bowel disease, diverticulosis, or colon cancer).
It is also important to differentiate ischemic colitis, which often resolves on its own, from the more immediately life-threatening condition of acute mesenteric ischemia of the small bowel.
Epidemiology and Demographics
Although uncommon in the general population, ischemic colitis occurs with greater frequency in the elderly, and is the most common form of bowel ischemia[2][3][4].
Natural History, Complications and Prognosis
Ischemic colitis can span a wide spectrum of severity; most patients are treated supportively and recover fully, while a minority with very severe ischemia may develop sepsis and become critically ill.[5] Most patients make a full recovery; occasionally, after severe ischemia, patients may develop long-term complications such as a stricture[6] or chronic colitis.[7]
Diagnosis
Ischemic colitis is usually suspected on the basis of the clinical setting, physical examination, and laboratory test results; the diagnosis can be confirmed via endoscopy.
Treatment
Patients with mild to moderate ischemic colitis are usually treated with IV fluids, analgesia, and bowel rest (that is, no food or water by mouth) until the symptoms resolve. Those with severe ischemia who develop complications such as sepsis, intestinal gangrene, or bowel perforation may require more aggressive interventions such as surgery and intensive care.
References
- ↑ Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.
- ↑ Higgins P, Davis K, Laine L (2004). "Systematic review: the epidemiology of ischaemic colitis". Aliment Pharmacol Ther. 19 (7): 729–38. PMID 15043513.
- ↑ Brandt LJ, Boley SJ (2000). "AGA technical review on intestinal ischemia. American Gastrointestinal Association". Gastroenterology. 118 (5): 954–68. PMID 10784596.
- ↑ American Gastroenterological Association (2000). "American Gastroenterological Association Medical Position Statement: guidelines on intestinal ischemia". Gastroenterology. 118 (5): 951–3. PMID 10784595. http://www.guideline.gov/summary/summary.aspx?ss=15&doc_id=3069&nbr=2295
- ↑ Medina C, Vilaseca J, Videla S, Fabra R, Armengol-Miro J, Malagelada J (2004). "Outcome of patients with ischemic colitis: review of fifty-three cases". Dis Colon Rectum. 47 (2): 180–4. PMID 15043287.
- ↑ Simi M, Pietroletti R, Navarra L, Leardi S (1995). "Bowel stricture due to ischemic colitis: report of three cases requiring surgery". Hepatogastroenterology. 42 (3): 279–81. PMID 7590579.
- ↑ Cappell M (1998). "Intestinal (mesenteric) vasculopathy. II. Ischemic colitis and chronic mesenteric ischemia". Gastroenterol Clin North Am. 27 (4): 827–60, vi. PMID 9890115.