What are potential reactions to IV contrast?

What are potential reactions to IV contrast?

• A. Injection-site reactions or serious reactions like anaphylaxis
• B. Mild headaches during injection
• C. No reactions occur
• D. Reactions only occur with gadolinium

Answer: (A)

IV contrast can trigger a range of adverse effects, from local injection-site reactions to potentially life-threatening systemic responses. Local symptoms are common and include pain or burning at the IV site, warmth, redness, or swelling. More concerning are systemic reactions such as hives, itching, nausea, vomiting, shortness of breath, or a drop in blood pressure, which can progress to anaphylaxis if not promptly treated. The idea that no reactions occur is incorrect, since a subset of patients experiences adverse effects. Additionally, reactions are not limited to gadolinium-containing agents; iodinated IV contrast used in CT can also cause reactions, though gadolinium has its own distinct risk profile.

IV contrast can trigger a range of adverse effects, from local injection-site reactions to potentially life-threatening systemic responses. Local symptoms are common and include pain or burning at the IV site, warmth, redness, or swelling. More concerning are systemic reactions such as hives, itching, nausea, vomiting, shortness of breath, or a drop in blood pressure, which can progress to anaphylaxis if not promptly treated. The idea that no reactions occur is incorrect, since a subset of patients experiences adverse effects. Additionally, reactions are not limited to gadolinium-containing agents; iodinated IV contrast used in CT can also cause reactions, though gadolinium has its own distinct risk profile.