K55.039

Clinical Causes: Blockage of blood flow due to a blood clot in a vessel supplying the large intestine Arterial embolism leading to sudden obstruction of blood flow Low blood pressure (hypotension), reducing overall blood flow to the intestines Atherosclerosis, causing narrowing of the arteries over time Vasculitis or inflammation of blood vessels impairing circulation Strictures or narrowing of the blood vessels due to other vascular diseases External compression of blood vessels from tumors or inflammatory masses

Key Symptoms: Sudden, severe abdominal pain which may be disproportionate to physical findings Nausea and vomiting Diarrhea, occasionally with blood Abdominal tenderness or rigidity upon examination Signs of shock in severe cases, such as rapid heartbeat, sweating, or low blood pressure Bloating or distension of the abdomen Fever and general malaise in some instances

Diagnosis Path: Medical history review focusing on risk factors and symptom onset Physical examination to detect abdominal tenderness or signs of systemic illness Imaging studies such as contrast-enhanced CT scan to identify areas of ischemia Doppler ultrasound to assess blood flow in mesenteric vessels Blood tests including complete blood count, lactate levels, and markers of inflammation Angiography, in certain cases, to visualize blood vessel blockages

Treatment Protocols: Urgent preservation of blood flow through surgical procedures or endovascular techniques Restoring blood circulation with medications such as anticoagulants or thrombolytics Supportive care including intravenous fluids and pain management Bowel resection in cases where tissue death has occurred Addressing underlying causes like removing obstructions, managing vascular disease, or reversing shock Close monitoring in an intensive care setting for severe cases