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Updated: Jul 13, 2026

A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
Published on: February 2, 2021
Defining acute renal failure: RIFLE and beyond.
Wim Van Biesen1, Raymond Vanholder, Norbert Lameire
1Renal Division, University Hospital, Ghent, Belgium.
The RIFLE classification improved acute kidney injury (AKI) understanding but needs refinement. Future AKI definitions should incorporate patient origin, causes, and baseline kidney function for more consistent research.
Area of Science:
- Nephrology
- Clinical Medicine
- Epidemiology
Background:
- The RIFLE classification enhanced the understanding of acute kidney injury (AKI).
- It has been validated in numerous clinical studies.
- However, limitations exist within the current RIFLE criteria.
Purpose of the Study:
- To review the strengths and weaknesses of the RIFLE classification for AKI.
- To propose additional parameters for a more comprehensive AKI definition.
- To reduce variability in AKI epidemiological studies and clinical trials.
Main Methods:
- Literature review of the RIFLE classification.
- Analysis of existing clinical studies utilizing RIFLE.
- Conceptual framework development for enhanced AKI definitions.
Main Results:
- The RIFLE classification provides a foundational understanding of AKI.
- Current definitions may lack crucial contextual information.
- Inclusion of specific parameters can improve definition robustness.
Conclusions:
- The RIFLE classification is a valuable tool but requires expansion.
- Future AKI definitions should integrate patient origin, causal factors, and pre-existing kidney function.
- A broadened definition will enhance the reliability of AKI research outcomes.
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