Ischemic colitis causes
|
Ischemic colitis Microchapters |
|
Case Studies |
|
Ischemic colitis causes On the Web |
|
American Roentgen Ray Society Images of Ischemic colitis causes |
|
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: 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 feeding 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