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Figure 1 Suggested algorithm for therapeutic recommendations to prevent contrast nephropathy. *Angiotensin-converting enzyme inhibitors, angiotensin receptor blocking agents, non-steroidal anti-inflammatory drugs, diuretics, aminoglycosides, calcineurin inhibitors; chronic renal insufficiency, diabetes, multiple myeloma, congestive heart failure, or age >70 years. b.i.d. = twice a day; IV = intravenous.