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Contrast-induced nephropathy: the wheel has turned 360 degrees

H S Thomsen1, S K Morcos, B J Barrett

  • 1Department of Diagnostic Radiology, Copenhagen University Hospital Herlev, Herlev, Denmark.

Acta Radiologica (Stockholm, Sweden : 1987)
|June 24, 2008
PubMed

Insights

Contrast-induced nephropathy (CIN) increases patient morbidity and mortality, especially in those with chronic kidney disease (CKD) and diabetes. Current effective strategies involve minimizing contrast dose, hydration, and avoiding repeat injections.

Area of Science:

  • Nephrology
  • Radiology
  • Cardiology

Background:

  • Contrast-induced nephropathy (CIN) is a significant complication associated with increased morbidity and mortality.
  • CIN is particularly prevalent in patients with advanced chronic kidney disease (CKD) and diabetes mellitus.
  • Despite numerous publications, effective CIN prevention strategies remain contentious and evolving.

Purpose of the Study:

  • To review and summarize current understanding and management strategies for contrast-induced nephropathy (CIN).
  • To highlight the association of CIN with chronic kidney disease (CKD) and diabetes.
  • To discuss the limited number of high-quality randomized controlled trials in CIN research.

Main Methods:

  • Review of over 900 publications on CIN from the past five years.
  • Analysis of the limited proportion (<5%) of randomized prospective controlled studies.
  • Evaluation of proposed methods to diminish CIN incidence, including contrast choice, pharmacologic manipulation, and volume expansion.

Main Results:

  • The pathophysiology of CIN remains uncertain, with renal blood flow reduction and tubular cell toxicity implicated.
  • Despite extensive research, significant changes in CIN management have been minimal.
  • Established approaches remain the most effective for reducing CIN risk.

Conclusions:

  • The most effective current approach to reduce CIN risk includes using the smallest effective dose of low- or iso-osmolar contrast media.
  • Volume expansion, cessation of nephrotoxic drugs, and avoiding repeat contrast injections within 48 hours are crucial.
  • Further high-quality randomized controlled studies are needed to advance CIN prevention and management.

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