Acute renal failure classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Aarti Narayan, M.B.B.S [2]
Overview
Acute renal failure can complicate a wide spectrum of disorders, and for the purpose of diagnosis and management is divided according to the mechanism that lead to renal compromise. The three categories are pre-renal azotemia (diseases that cause renal hypoperfusion), renal azotemia (diseases directly affecting the renal parenchyma), and post-renal azotemia (diseases affecting the urinary tract causing obstruction).
Classification
According to the levels of renal dysfunction
Acute renal failure is usually categorised (as in the flowchart below) according to pre-renal, renal and post-renal causes.
| Acute Renal Failure | |||||||||||||||||||||||||||||||||
| Pre-renal | Renal | Post-renal | |||||||||||||||||||||||||||||||
1. Pre-renal
- Compromise in the renal blood flow
2. Renal
- Damage to the kidney itself
3. Post-renal
- Obstructive causes in the urinary tract