Which of the following is a potential risk of using iodinated contrast media?

• A. Radiation exposure
• B. Organ failure
• C. Allergic reactions and nephrotoxicity
• D. Air embolism

Answer: (C)

The use of iodinated contrast media in imaging procedures, such as angiography or CT scans, carries specific risks, among which allergic reactions and nephrotoxicity are significant concerns. Iodinated contrast agents can provoke allergic reactions in some patients, ranging from mild reactions like urticaria to more severe anaphylactic responses. This occurs due to the body's immune reaction to the iodine content or other components of the contrast media.

Moreover, nephrotoxicity is another critical risk, particularly for individuals with pre-existing renal impairment or certain medical conditions like diabetes. The contrast media can lead to contrast-induced nephropathy, where there is a sudden deterioration in kidney function following the administration of the contrast agent. This effect is particularly important to recognize, as it can necessitate further medical intervention or monitoring.

While radiation exposure, organ failure, and air embolism are all pertinent considerations in medical imaging, they do not directly relate to the specific risks associated with iodinated contrast media. Radiation exposure is primarily a concern with imaging modalities themselves, rather than with the contrast media used. Organ failure can result from various causes, not exclusively linked to contrast, and air embolism relates more to procedural complications rather than the administered contrast itself. Thus, the specific risks associated with