SG Acute Renal Failure Flashcards
What is the normal length of an adult kidney?
9-12 cm
If the FENa is
pre-renal
How do NSAIDs contribute to ARF?
cause afferent vasoconstriction and decreased renal perfusion, while also preventing production of prostacyclins
What is azotemia?
a rise in BUN and Cr without damage to the kidney
How do NSAIDs contribute to ARF?
they cause the efferent arteriole to vasodilate
If the FENa is >1%, the AKI is a _____ cause.
intrinsic or postrenal
If the FENa is ____, the AKI is a pre-renal cause.
If the FENa is ____, the AKI is an intrinsic or postrenal cause.
>1%
Name 5 causes of pre-renal AKI.
- sepsis (presents as fever, low BP)
- heart/liver dz
- hemorrhage
- GI losses (reduced intake, vomiting, diarrhea)
- medications (anything that decreases BP or volume)
What is the equation for creatinine clearance?
Cc = (Ucr x V) / Pcr
What is the normal specific gravity level of urine?
1.01
What does an increased specific gravity indicate?
dehydration
Protein in the urine is ALWAYS indicative of a problem at the _____.
glomerulus
Name the 3 AKI pathologies.
- pre-renal
- intrarenal
- post-renal
Name some causes of intrinsic AKI.
- glmomerular (GN, nephrotic syndrome, MPGN, anti-GBM, Goodpasture, etc)
- tubular (ATN)
- interstitial (allergies, acute interstitial nephritis)
- vascular (vasculidities)