Toxic Megacolon Should Be Suspected in a Patient with Ulcerative

question 41

Multiple Choice

Toxic megacolon should be suspected in a patient with ulcerative colitis whose abdominal radiographs reveal chronic dilatation of the colon exceeding __________ cm.

• A) 4.5
• B) 5
• C) 5.5
• D) 6.5

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Definitions:

Carbon Monoxide

A colorless, odorless gas produced by the incomplete burning of carbon-containing materials, toxic to humans and animals when inhaled.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the rest of the body.

Binding

The process of forming chemical bonds between atoms or molecules to create more complex compounds or structures.

Oxygen/Hemoglobin Equilibrium

The process by which oxygen binds to hemoglobin in the blood and is transported to tissues, balanced by oxygen's release from hemoglobin.