Prevention of contrast nephropathy – Radiology MCQ

Which of the following contrast agents can be used in a patient with renal dysfunction for the prevention of contrast nephropathy?

A. Low osmolar contrast
B. Ionic contrast
C. Fenoldopam
D. Acetylcysteine

Correct answer : A. Low osmolar contrast

Prevention of contrast nephropathy

  • Non ionic low osmolar contrast agents are preferred in patients with decreased renal function to prevent contrast nephropathy
  • Ionic contrast media have a higher risk for contrast nephropathy, and hence should be avoided
  • The amount of contrast media used should be limited
  • The patient should be well hydrated before the procedure
  • Supplementary interventions include use of N-acetylcysteine, fenoldopam, theophylline, prostaglandins and magnesium

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