Working out Urea:Creatinine easily
Divide the creatinine by 10, if the urea is higher than creatinine then think pre-renal cause.
Eg if creatinine was 123 umol/L and urea was 16.1mmol/L.
16.1 > 12.3 so consider pre-renal disease.
Pre-renal - something causes ↓ BP
- Vomiting
- Diarrhoea
- Diuretics
- Haemorrhage
- Burns
- Renal Artery Stenosis
Intrinsic - something within the kidney
- NSAIDS
- Nephrotoxins
- Glomerulonephritis
- Vascular
Post-renal
- Urolithiasis
- Tumours
- Retroperitoneal fibrosis