Question:medium
Radiocontrast is contraindicated in all of the following conditions except?
Radiocontrast is contraindicated in all of the following conditions except?
Show Hint
Which option carries no renal or lactic-acidosis risk with contrast?
Updated On: Jun 24, 2026
- Renal failure
- Patient on metformin
- Dehydration
- Obesity
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: This is an except question, so three options are genuine contraindications and one is safe. The recurring theme is renal safety with iodinated contrast.
Step 2: Renal failure already strains the kidneys, so adding nephrotoxic contrast is dangerous. Dehydration reduces renal blood flow and amplifies contrast nephropathy. Metformin is held before and after contrast because falling renal function can trap the drug and trigger lactic acidosis. All three are valid contraindications or cautions.
Step 3: Obesity does not share this renal hazard. Body weight alone does not bar the use of radiocontrast, so it is the odd one out and the correct answer.
\[\boxed{\text{Obesity}}\]
Step 2: Renal failure already strains the kidneys, so adding nephrotoxic contrast is dangerous. Dehydration reduces renal blood flow and amplifies contrast nephropathy. Metformin is held before and after contrast because falling renal function can trap the drug and trigger lactic acidosis. All three are valid contraindications or cautions.
Step 3: Obesity does not share this renal hazard. Body weight alone does not bar the use of radiocontrast, so it is the odd one out and the correct answer.
\[\boxed{\text{Obesity}}\]
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