ARRT Contrast Media and Pharmacology

Question 1

Which type of iodinated contrast media is considered safest for patients with a history of allergic reactions?

Accepted Answer

Nonionic low-osmolar

Answer

Ionic high-osmolar

Answer

Ionic low-osmolar

Answer

Nonionic high-osmolar

Question 2

What is the most common mild adverse reaction to iodinated contrast media?

Accepted Answer

Nausea and vomiting

Answer

Bronchospasm

Answer

Hypotension

Answer

Urticaria

Question 3

Before administering iodinated contrast media, which lab value is most critical to assess renal function?

Accepted Answer

Serum creatinine / eGFR

Answer

BUN

Answer

ALT

Answer

Hemoglobin

Question 4

Which medication is commonly used as premedication to reduce the risk of a repeat contrast reaction?

Accepted Answer

Prednisone (corticosteroid)

Answer

Metformin

Answer

Warfarin

Answer

Insulin

Question 5

What is the primary treatment for anaphylactic shock caused by contrast media?

Accepted Answer

Epinephrine IM

Answer

Diphenhydramine IV

Answer

Normal saline bolus only

Answer

Atropine IV

Question 6

Why should metformin be held after contrast media administration in patients with diabetes?

Accepted Answer

Risk of lactic acidosis if renal function is impaired

Answer

Contrast increases blood glucose levels

Answer

Metformin reduces contrast effectiveness

Answer

Contrast causes hypoglycemia