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Ischemic Colitis is a condition where inflammation and damage occur in a segment of the large intestine (colon) due to a sudden, temporary reduction of blood flow (ischemia). This lack of oxygen and nutrients damages the colon lining.
read more about ischemic colitis ...The cause is the sudden reduction of blood flow through the mesenteric arteries supplying the colon. This reduction is often caused by low blood pressure (shock), severe dehydration, or underlying conditions that cause vessel blockage (atherosclerosis). The reduced flow prevents the colon cells from receiving sufficient oxygen. The temporary loss of blood supply leads to inflammation and injury of the colon lining.
Symptoms define an acute attack of abdominal pain. These include sudden onset of abdominal cramping (usually on the left side) followed by rectal bleeding and bloody diarrhea. The severity of the symptoms depends on the length of time the blood flow was restricted.
Ischemic Colitis does not directly impact vision. However, the associated acute bleeding and severe dehydration lead to systemic strain. Severe blood loss can cause acute hypotension (low blood pressure), which can result in temporary visual dimming, lightheadedness, or faintness.
Diagnosis requires immediate imaging and endoscopy. A Computed Tomography (CT) scan is often used to visualize the thickened, damaged section of the colon. Colonoscopy confirms the mucosal injury and helps assess the extent of the damage.
The necessary treatment is supportive care, monitoring, and addressing the underlying cause of low blood flow. Patients are given intravenous fluids to restore circulation. In rare, severe cases where the tissue dies, surgical removal of the damaged colon segment is necessary.
No, it is usually an acute event. However, underlying vascular disease (atherosclerosis) is chronic.
No, surgery is typically reserved for severe cases where the colon tissue dies (necrosis).
Yes, patients with severe heart failure or low blood pressure are at high risk for reduced intestinal blood flow.
If you experience sudden, severe left-sided abdominal pain followed by bloody diarrhea, seek emergency care. Ischemic colitis occurs when blood flow to the large intestine is restricted. A doctor will use a colonoscopy to differentiate this from inflammatory bowel disease.
Mayo Clinic. Ischemic Colitis (mayoclinic.org). 2024.
Cleveland Clinic. Ischemic Colitis Overview (clevelandclinic.org). 2024.
StatPearls. Ischemic Colitis (ncbi.nlm.nih.gov). 2024.
NIDDK. Ischemic Colitis (niddk.nih.gov). 2024.