CT Imaging of Acute Bowel Ischemia and Infarction - Department of ...
CT Imaging of Acute Bowel Ischemia and Infarction - Department of ...
CT Imaging of Acute Bowel Ischemia and Infarction - Department of ...
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Anatomy<br />
Vascular Supply <strong>of</strong> <strong>Bowel</strong>: Blood Flow<br />
• Percentage <strong>of</strong> cardiac output received by bowel…<br />
– (a) Normal circumstances = 20%<br />
– (b) Post-pr<strong>and</strong>ial (splanchnic auto-regulation) = 35%<br />
– (c) Sympathetic stress response = 10%<br />
• Proportion <strong>of</strong> arterial blood to bowel wall…<br />
– 2/3 = mucosa (i.e. susceptible to ischemia)<br />
– 1/3 = remainder <strong>of</strong> the mural layers<br />
Ex. Shock = high-risk group<br />
(i.e. low flow state + stress response)
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