Question:medium
Dye used in the diagnosis of esophageal perforation:
Dye used in the diagnosis of esophageal perforation:
Show Hint
Leaked barium causes mediastinitis, so the first agent must be water-soluble.
Updated On: Jun 23, 2026
- Iohexol
- Barium sulphate
- Gadolinium
- Iodine dye
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: The clinical question is which contrast is safe when the esophageal wall may be breached. A perforation means contrast can spill into the chest. Step 2: Think about what happens to each agent after a leak. Barium that escapes the lumen stays in the tissues and triggers chronic mediastinitis and fibrosis, so it is contraindicated as the first agent in a suspected tear. Step 3: A water-soluble iodinated dye is reabsorbed by serosal surfaces if it leaks, so it is the preferred screening agent. Among the choices, Iohexol is exactly that water-soluble non-ionic iodinated contrast. Step 4: Gadolinium belongs to MRI, not fluoroscopic swallow studies, and a generic "iodine dye" is not an accepted named oral preparation. Barium is reserved for after a negative water-soluble study. Therefore the correct diagnostic dye is Iohexol. $Iohexol = water\text{-}soluble\ iodinated\ contrast$ \[\boxed{\text{Iohexol}}\]
Was this answer helpful?
0
