3
1.5x baseline
or
rise of >26 micromol/L in 48 hours
6 hrs
2-2.9x baseline
12hrs
>3x baseline or >354 micromol/L in 48 hours or RRT
24 hours
or
anuric for 12 hours
Pre-renal
Intrinsic
Post-renal
Pre-renal - 40% - 70%
renal hypoperfusion
Renal artery stenosis
Hypotension
sepsis
cardiac output failure
Tubular
Glomerular
Interstitial
Vascular
acute tubular necrosis
intrinsic
tubular
intrinsic
glomerular
intrinsic interstitial (i.e. infiltration)
Vascular
luminal
mural
extrinsic compression
sloughed papillae
stones
clots
strictures
malignancy
BPH
retroperitoneal fibrosis
post-renal
BPH
USS