Pre-renal causes of postoperative renal failure
Pre-renal causes include:
- hypotension, hypovolaemia - bleed, fluids. Losses perioperatively - evaporative, open abdomen etc.
- Endotracheal tube losses - no moisture loss etc
- Third spacing - loss of fluid to extracellular space pathologically with tissue damage. Abnormal fluid shifts.
- Cardiac suppression - negative inotropic effect of anaesthesia
Reference
- Gumbert SD et al. Perioperative Acute Kidney Injury. Anesthesiology. 2020 Jan;132(1):180-204
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