Question:
Radiocontrast is contraindicated in all of the following conditions except?
Radiocontrast is contraindicated in all of the following conditions except?
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Which option carries no renal or lactic-acidosis risk with contrast?
Updated On: Jun 24, 2026
- Renal failure
- Patient on metformin
- Dehydration
- Obesity
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The Correct Option is D
Solution and Explanation
Step 1: Iodinated radiocontrast agents are nephrotoxic and can precipitate contrast induced nephropathy, so several conditions are relative or absolute contraindications. The question asks which option is NOT a contraindication.
Step 2: Renal failure is a contraindication because impaired kidneys are at high risk of contrast nephropathy. Dehydration worsens renal perfusion and increases this risk, so it is also a contraindication. Metformin must be withheld around contrast administration because of the risk of lactic acidosis if renal function declines, making it a caution or contraindication.
Step 3: Obesity is not a contraindication to radiocontrast administration. It does not increase the risk of contrast nephropathy or lactic acidosis in the way the other factors do. Therefore obesity is the exception and is the correct answer.
Step 2: Renal failure is a contraindication because impaired kidneys are at high risk of contrast nephropathy. Dehydration worsens renal perfusion and increases this risk, so it is also a contraindication. Metformin must be withheld around contrast administration because of the risk of lactic acidosis if renal function declines, making it a caution or contraindication.
Step 3: Obesity is not a contraindication to radiocontrast administration. It does not increase the risk of contrast nephropathy or lactic acidosis in the way the other factors do. Therefore obesity is the exception and is the correct answer.
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