Intestinal infarction is defined as?

Intestinal infarction is defined as?

• A. Increased blood flow to the intestinal tract
• B. Decreased blood flow to major mesenteric vessels leading to tissue necrosis
• C. Bowel dilation without necrosis
• D. Ischemia limited to the stomach

Answer: (B)

Intestinal infarction occurs when blood flow through the major mesenteric vessels is critically reduced, and the bowel tissue undergoes irreversible damage (necrosis) from that prolonged ischemia. Infarction = tissue death due to sustained lack of perfusion. In the GI tract, this happens when arterial or venous flow to the intestines is compromised (for example by an embolus, thrombosis, or severe hypoperfusion), so the bowel cannot receive enough oxygen and nutrients to survive. If perfusion isn’t restored, the ischemic tissue progresses to necrosis, which can lead to perforation and peritonitis. This is different from scenarios of increased blood flow or simple dilation without necrosis, which do not result in tissue infarction. Ischemia confined to the stomach is not the typical pattern for infarction of the intestines, since the question targets the mesenteric circulation supplying the intestines.

Intestinal infarction occurs when blood flow through the major mesenteric vessels is critically reduced, and the bowel tissue undergoes irreversible damage (necrosis) from that prolonged ischemia. Infarction = tissue death due to sustained lack of perfusion. In the GI tract, this happens when arterial or venous flow to the intestines is compromised (for example by an embolus, thrombosis, or severe hypoperfusion), so the bowel cannot receive enough oxygen and nutrients to survive. If perfusion isn’t restored, the ischemic tissue progresses to necrosis, which can lead to perforation and peritonitis.

This is different from scenarios of increased blood flow or simple dilation without necrosis, which do not result in tissue infarction. Ischemia confined to the stomach is not the typical pattern for infarction of the intestines, since the question targets the mesenteric circulation supplying the intestines.