acute tubular necrosis vs. prerenal uraemia Flashcards
1
Q
urine sodium - prerenal
A
< 20
2
Q
urine sodium - acute tubular necrosis
A
> 40
3
Q
urine osmolality - prerenal
A
> 500
4
Q
urine osmolality - acute tubular necrosis
A
< 350
5
Q
fractional sodium excretion - prerenal
A
< 1%
6
Q
fractional sodium excretion - acute tubular necrosis
A
> 1%
7
Q
response to fluid challenge - prerenal
A
good
8
Q
response to fluid challenge - acute tubular necrosis
A
bad
9
Q
urea:creatinine ratio - prerenal
A
raised
10
Q
urea:creatinine ratio: acute tubular necrosis
A
normal
11
Q
urea excretion - prerenal
A
< 35%
12
Q
urea excretion: acute tubular necrosis
A
> 35%
13
Q
urine:plasma osmolality - prerenal
A
> 1.5
14
Q
urine:plasma osmolality - acute tubular necrosis
A
< 1.1
15
Q
urine:plasma urea - prerenal
A
> 10:1
