Ischemic colitis causes: Difference between revisions
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{{Ischemic colitis}} | {{Ischemic colitis}} | ||
{{CMG}}; {{AOEIC}} {{CZ}} | {{CMG}}; {{AOEIC}} {{CZ}} | ||
==Causes== | ==Causes== | ||
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 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. | ||
===Non-occlusive | ===Non-occlusive Ischemia=== | ||
In hemodynamically unstable patients (i.e. [[shock]] patients) the [[mesenteric]] perfusion may be compromised. | In hemodynamically unstable patients (i.e. [[shock]] patients) the [[mesenteric]] perfusion may be compromised. | ||
===Occlusive | ===Occlusive Ischemia=== | ||
Occlusive is ischemia is due to either: | Occlusive is ischemia is due to either: | ||
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==References== | ==References== | ||
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{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Revision as of 00:42, 4 February 2013
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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]
Causes
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.
Non-occlusive Ischemia
In hemodynamically unstable patients (i.e. shock patients) the mesenteric perfusion may be compromised.
Occlusive Ischemia
Occlusive is ischemia is due to either:
1. Obstructive Atherosclerotic Disease
- Superior mesenteric artery occlusion
2. Thromboembolism:
- Most commonly the embolism is due to atrial fibrillation
- Valvular heart disease including endocarditis
- Myocardial infarction
- Cardiomyopathy