definisi
DESCRIPTION
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Definisi
• Acute mesenteric ischemia adalah syndromeyang disebabkan oleh ketidak adekuatnya aliran darah yang melewati mesenteric vessel.
• Yang menyebabkan ischemia dan dan pada akhirnya akan menyebabkan gangren dari dinding usus.
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Etiologi
• AMAE ( Embolic AMI) cardiac emboli, Atheromatous plaque, emboli dari fragments proximal aortic thrombus.
• AMAT ( Thrombic) Atherosclerotic vascular disease, aortic aneurysm, aortic dissection, Arteritis, Dehydration
(thrombosis typically occurs at the vessel’s origin resulting in extensive bowel involvement)
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• Nonocclusive mesenteric ischemia Hypotension, vasopressor, ergotamines, cocaine
• Mesenteric venous thrombosis hypercoagulability, Tumor, infection, venous congestion, venous trauma
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Epidemiologi
• The overall prevalence of AMI is 0.1% of all hospital admissions.
• Embolic phenomena 50% of all clinical cases, arterial thrombosis for about 25%, NOMI for roughly 20%, and MVT for less than 10%.
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Patofisiologi
• Perfusi darah yang tidak adekuat dari usus kecil dan usus besar dapat terjadi karena emboli atau oklusi arteri trombosis ( Amae atau Amat) , oklusi vena trombosis ( misalkan MVT ) , atau proses nonocclusive seperti vasospasme atau output jantung yang rendah ( Nomi )