Exam-style question
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What is the key difference between ionic and non-ionic contrast media?.
- A.Ionic contrast media contain salts, while non-ionic do not
- B.Ionic contrast media are always more effective than non-ionic
- C.Ionic contrast media are less expensive than non-ionic
- D.Ionic contrast media are used only in MRI
Model answer
What a good answer should say
- Ionic contrast media contain salts, while non-ionic do not
Explanation
Why this works
Ionic contrast media dissociate into charged particles in solution, which can lead to more side effects. Non-ionic contrast media do not dissociate and are generally better tolerated by patients.
This difference is crucial when considering patient safety and comfort.
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