The nephrotoxic effects of radiographic contrast media (RCM) used for excretory urography and angiography are described in 9 patients. These effects are usually temporary and reversible, but may be permanent. Predisposing factors resulting in renal damage are identified and discussed. These include diabetes, dehydration, myelomatosis, chronic renal failure of many causes and repeated administrations of contrast media with a short period. Suggestions are made in order to reduce the incidence and severity of functional renal impairment after administration of contrast media.
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