Acute kidney injury: Difference between revisions

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==Definitions==
==Definitions==
ARF: Recent (over hours to days) decline in renal function
ARF: Recent (over hours to days) decline in renal function


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Uremia: Clinical syndrome resulting from the adverse effects of renal failure on other organ systems eg cardiovascular, central nervous, GI, heme, immunologic
Uremia: Clinical syndrome resulting from the adverse effects of renal failure on other organ systems eg cardiovascular, central nervous, GI, heme, immunologic


==Etiology==
==Etiology==
 
#Prerenal
 
## BUN/Cr ratio > 20
Prerenal
## FeNa < 1%
 
## FeUN <35%
* BUN/Cr ratio > 20
#Intrarenal
* FeNa < 1%
## FeNa <>1%
* FeUN <35%
## FeUN >50%
Intrarenal
#Post-obstructive
 
* FeNa <>1%
* FeUN >50%
Post-obstructive
 


==Work-up==
==Work-up==
 
#Urinalysis
 
#Urine sodium, creatinine, urea (for those on diuretics)
Urinalysis
#Foley
 
Urine sodium, creatinine, urea (for those on diuretics)
 
Foley
 


==Disposition==
==Disposition==
Admit
Admit


==See Also==
==See Also==
FEN: Hyperkalemia
FEN: Hyperkalemia


[[Category:GU]]
[[Category:GU]]

Revision as of 12:27, 14 March 2011

Definitions

ARF: Recent (over hours to days) decline in renal function

Oliguria: UO < 400cc/day

Anuria: UO < 100cc/day

Azotemia: Elevation in BUN

Uremia: Clinical syndrome resulting from the adverse effects of renal failure on other organ systems eg cardiovascular, central nervous, GI, heme, immunologic

Etiology

  1. Prerenal
    1. BUN/Cr ratio > 20
    2. FeNa < 1%
    3. FeUN <35%
  2. Intrarenal
    1. FeNa <>1%
    2. FeUN >50%
  3. Post-obstructive

Work-up

  1. Urinalysis
  2. Urine sodium, creatinine, urea (for those on diuretics)
  3. Foley

Disposition

Admit

See Also

FEN: Hyperkalemia