Review Article
Acute Kidney Injury: Controversies Revisited
Table 3
Recommended relative and absolute indications for RRT in critically ill patients with AKI [
82].
| Dialysis indication | Criteria | Absolute/relative |
| Metabolic | Urea > 27 mmol/L | Relative | Urea > 35.7 mmol/L | Absolute | Hyperkalaemia > 6 mmol/L | Relative | Hyperkalaemia > 6 mmol/L plus ECG changes | Absolute | Dysnatraemia | Relative | Hypermagnesaemia > 4 mmol/L | Relative | Hypermagnesaemia > 4 mmol/L plus anuria or areflexia | Absolute |
| Acidosis | pH > 7.15 | Relative | pH < 7.15 | Absolute |
| Anuria/oliguria | Risk (RIFLE class) | Relative | Injury (RIFLE class) | Relative | Failure (RIFLE class) | Relative | UO < 200 mL for 12 hrs or anuria | Absolute |
| Uraemic complication | Encephalopathy | Absolute | Pericarditis | Absolute | Myopathy | Absolute | Neuropathy | Absolute | Bleeding | Absolute |
| Fluid overload | Diuretic responsive | Relative | Diuretic resistant (with pulmonary oedema) | Absolute |
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