CAMRT Radiography Practice Exam

What is a common moderate reaction to CT contrast?

1. Runny nose

2. Flushed and warmth

3. Itchiness

4. Tightness of throat

The correct answer is: Flushed and warmth

A flushed feeling and warmth are common moderate reactions to CT contrast due to the rapid expansion of blood vessels caused by the contrast agent. This vasodilation can lead to a sensation of warmth, especially in the face and torso, and might be accompanied by a flushing of the skin. This is typically a self-limiting reaction and can occur as the body's response to the contrast material introduced during the imaging procedure. In the context of radiology, it's crucial for medical professionals to differentiate between mild, moderate, and severe reactions to contrast. While symptoms such as a runny nose, itchiness, or tightness of the throat could indicate an allergic response or another reaction, the flushed feeling and warmth are more characteristic of moderate responses that patients often experience. Understanding these reactions helps practitioners prepare for and manage patient comfort during CT scans.