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Acute Kidney Injury (Management (Assess volume status and appropriate…
Acute Kidney Injury
Definition: A rapid decline in kidney function with an increase in serum creatinine level (a relative increase of 50% or 0.5 to 1.0 mg/dL)
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Investigations
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Blood tests
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BUN/Cr ratio (> 20 prerenal, < 20 renal)
Urine:serum albumin (Prerenal: low, renal: high)
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Management
- Assess volume status and appropriate fluid resus, avoid K+ containing fluids unless hypokalaemic
- Stop nephrotoxic drugs e.g. digoxin, ACE I, spiro, NSAIDS, metformin
- Regular monitoring (UO), consider ICU
- Correct electrolyte disturbances
- Consider indications for dialysis: acidosis (pH<7.1), electrolytes (K>6.5), intoxication, fluid overload uraemia (encephalopathy/pericarditis, urea > 35-50)
- Treat underlying cause e.g. bladder catheter
- Complication management e.g. with dialysis, antibiotics, NaHCO3, diuretics
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