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Related Experiment Videos

Baseline renal function screening.

Norbert Lameire1, Andy Adam, Christoph R Becker

  • 1Department of Medicine, University Hospital, Ghent, Belgium. norbert.lameire@ughent.be

The American Journal of Cardiology
|September 5, 2006
PubMed
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Assessing renal function using estimated glomerular filtration rate (eGFR) before administering iodinated contrast media is crucial for preventing contrast-induced nephropathy (CIN). Calculating eGFR with the MDRD formula is recommended to identify at-risk patients.

Area of Science:

  • Nephrology
  • Radiology
  • Medical Diagnostics

Background:

  • Renal impairment is a primary risk factor for contrast-induced nephropathy (CIN) in patients receiving iodinated contrast media.
  • Accurate assessment of renal function is essential before contrast administration to implement risk-reduction strategies.
  • Serum creatinine alone is insufficient for reliable renal function assessment; estimated glomerular filtration rate (eGFR) is recommended.

Purpose of the Study:

  • To emphasize the importance of assessing renal function before contrast media administration.
  • To recommend the use of eGFR for predicting the risk of CIN.
  • To provide guidance on methods for assessing renal function in patients undergoing procedures with contrast media.

Main Methods:

  • Recommends using eGFR calculated from serum creatinine as the preferred index of renal function.

Related Experiment Videos

  • Specifies the abbreviated Modification of Diet in Renal Disease (MDRD) formula as the preferred equation for eGFR calculation in adults.
  • Suggests using a simple survey or questionnaire to identify high-risk patients when eGFR is unavailable.

    • Main Results:

    • Baseline renal impairment (eGFR <60 mL/min/1.73 m(2)) is the most significant predictor of CIN risk.
    • eGFR determination before contrast administration is crucial for risk stratification and management.
    • In emergency cases, contrast administration can proceed without prior renal function assessment if imaging benefits outweigh risks.

    Conclusions:

    • Clinicians should routinely assess renal function using eGFR before administering iodinated contrast media to mitigate CIN risk.
    • The MDRD formula is the recommended method for calculating eGFR in adults for this purpose.
    • Alternative risk assessment methods, like questionnaires, can be employed when eGFR is not readily available, with exceptions for emergencies.