Ischemic colitis causes: Difference between revisions

Jump to navigation Jump to search
 
(9 intermediate revisions by one other user not shown)
Line 1: Line 1:
__NOTOC__
__NOTOC__
{{Ischemic colitis}}
{{Ischemic colitis}}
{{CMG}}; {{AE}} {{HQ}} {{CZ}}
{{CMG}}; {{AE}} {{HQ}}


==Overview==
==Overview==
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.
Causes of reduced blood flow leading to ischemic colitis include changes in the systemic circulation such as [[hypotension|low blood pressure]] (hypotension) or local factors such as [[vasoconstriction|constriction of blood vessels]], a [[blood clot]], or drugs. In most cases, no specific cause can be identified.


==Causes==
==Causes==
The causes of ischemic colitis are as follows:<ref name="HassKozuch2007">{{cite journal|last1=Hass|first1=David J.|last2=Kozuch|first2=Patricia|last3=Brandt|first3=Lawrence J.|title=Pharmacologically Mediated Colon Ischemia|journal=The American Journal of Gastroenterology|volume=102|issue=8|year=2007|pages=1765–1780|issn=0002-9270|doi=10.1111/j.1572-0241.2007.01260.x}}</ref>
The causes of ischemic colitis are as follows:<ref name="HassKozuch2007">{{cite journal|last1=Hass|first1=David J.|last2=Kozuch|first2=Patricia|last3=Brandt|first3=Lawrence J.|title=Pharmacologically Mediated Colon Ischemia|journal=The American Journal of Gastroenterology|volume=102|issue=8|year=2007|pages=1765–1780|issn=0002-9270|doi=10.1111/j.1572-0241.2007.01260.x}}</ref><ref name="TheodoropoulouΚoutroubakis2008">{{cite journal|last1=Theodoropoulou|first1=Αngeliki|last2=Κoutroubakis|first2=Ioannis E|title=Ischemic colitis: Clinical practice in diagnosis and treatment|journal=World Journal of Gastroenterology|volume=14|issue=48|year=2008|pages=7302|issn=1007-9327|doi=10.3748/wjg.14.7302}}</ref><ref>Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.</ref>
<ref>Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.</ref>


Ischemic colitis is often classified according to the underlying cause. Non-occlusive ischemia develops because of [[low blood pressure]] or constriction of the vessels supplying blood to the colon; occlusive ischemia indicates that a [[blood clot]] or other blockage has cut off blood flow to the [[colon]]. In most cases, no specific cause can be identified.
*Ischemic colitis is often classified according to the underlying cause.  
**Non-occlusive [[ischemia]] develops because of [[low blood pressure]] or constriction of the [[Blood vessel|vessels]] supplying [[blood]] to the [[Colon (anatomy)|colon]].
**[[Thromboembolism|Occlusive]] [[ischemia]] indicates that a [[blood clot]] or other blockage has cut off [[blood]] flow to the [[colon]].  


===Non-occlusive Ischemia===
===Non-occlusive Ischemia===
* In hemodynamically unstable patients (i.e. [[shock]] patients) the [[mesenteric]] perfusion may be compromised.
* In [[Hemodynamics|hemodynamically]] unstable patients the [[mesenteric]] perfusion can be compromised.
* [[Low blood pressure]]


===Occlusive Ischemia===
===Occlusive Ischemia===
*Obstructive atherosclerotic disease
*[[Cardiovascular disease|Obstructive]] [[Atherosclerosis|atherosclerotic]] disease
:*[[Superior mesenteric artery]] occlusion
**[[Superior mesenteric artery]] occlusion
* [[Thromboembolism]]:
 
:*Most commonly the embolism is due to [[atrial fibrillation]]
* [[Thromboembolism]]
:*[[Valvular heart disease]] including [[endocarditis]]
** Most commonly the [[embolism]] is due to [[atrial fibrillation]]
:*[[Myocardial infarction]]
** [[Valvular heart disease]] including [[endocarditis]]
:*[[Cardiomyopathy]]
** [[Myocardial infarction]]
** [[Cardiomyopathy]]
 
*[[Hernia]]
*[[Hernia]]
*[[Tumor]]
*[[Tumor]]


===Drugs===
===Drugs===
The following drugs cause vasoconstriction which may compromise blood supply to the colon.
*[[Alosetron]]
*[[Alosetron]]
*[[Cilansetron]]
*[[Cilansetron]]
Line 39: Line 42:
{{Reflist|2}}
{{Reflist|2}}


[[Category:Needs overview]]
{{WH}}
{{WS}}
[[Category:Gastroenterology]]
[[Category:Medicine]]
[[Category:Disease]]
[[Category:Disease]]
[[Category:Gastroenterology]]
[[Category:Cardiology]]
[[Category:Emergency medicine]]
[[Category:Emergency medicine]]
 
[[Category:Up-To-Date]]
{{WikiDoc Help Menu}}
{{WikiDoc Sources}}

Latest revision as of 14:16, 5 February 2018

Colitis Main Page

Ischemic colitis Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Ischemic colitis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Abdominal X Ray

CT

MRI

Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Ischemic colitis causes On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Ischemic colitis causes

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA onIschemic colitis causes

CDC on Ischemic colitis causes

Ischemic colitis causes in the news

Blogs on Ischemic colitis causes

Directions to Hospitals Treating Ischemic colitis

Risk calculators and risk factors for Ischemic colitis causes

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hamid Qazi, MD, BSc [2]

Overview

Causes of reduced blood flow leading to ischemic colitis include changes in the systemic circulation such as low blood pressure (hypotension) or local factors such as constriction of blood vessels, a blood clot, or drugs. In most cases, no specific cause can be identified.

Causes

The causes of ischemic colitis are as follows:[1][2][3]

Non-occlusive Ischemia

Occlusive Ischemia

Drugs

The following drugs cause vasoconstriction which may compromise blood supply to the colon.

References

  1. Hass, David J.; Kozuch, Patricia; Brandt, Lawrence J. (2007). "Pharmacologically Mediated Colon Ischemia". The American Journal of Gastroenterology. 102 (8): 1765–1780. doi:10.1111/j.1572-0241.2007.01260.x. ISSN 0002-9270.
  2. Theodoropoulou, Αngeliki; Κoutroubakis, Ioannis E (2008). "Ischemic colitis: Clinical practice in diagnosis and treatment". World Journal of Gastroenterology. 14 (48): 7302. doi:10.3748/wjg.14.7302. ISSN 1007-9327.
  3. Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease, 7th ed., 2002 Saunders, p. 2332.

Template:WH Template:WS