CAMRT Radiography Practice Exam

If a patient is to undergo a CT exam with iodine contrast, which condition should the MRT confirm with the patient beforehand?

1. History of heart disease

2. Previous kidney function issues

3. Current respiratory symptoms

4. Known food allergies

The correct answer is: Previous kidney function issues

When preparing a patient for a CT exam involving iodine contrast, it is essential to confirm any previous kidney function issues. The use of iodinated contrast media can pose a risk for patients with compromised renal function, potentially leading to a condition known as contrast-induced nephropathy. This can occur when the kidneys are unable to adequately filter out the contrast material, leading to a decline in kidney function. Assessing the patient's renal history, including any previous issues or diagnoses of kidney disease, allows the medical team to make informed decisions regarding the use of contrast and, if necessary, to take precautions. In cases where a patient has known kidney dysfunction, alternative imaging methods or strategies to mitigate risk may be considered. While the other conditions listed may carry their own clinical significance, they do not have the same direct implications for the administration of iodine-based contrast media as renal function does.