Renal Failure Versus Renal Insufficiency! - USMLE Forums
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Old 03-11-2012
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Kidney Renal Failure Versus Renal Insufficiency!

from what i can gather

- failure is -- kidneys unable to get rid of stuff, so concentrations of things increase

- insufficiency - is when the kidneys arent properly able to reabs. things so, more is secreted.

am i right ?
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Old 03-12-2012
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With Failure you many want to be careful, since in failure phosphate increases and calcium decreases. So:

Insufficiency - is Acute or Chronic renal failure. Just think of it as kidneys are not working at 100%. What serum levels of a give substance varies on which you have (acute or chronic failure).

Acute Failure - Look at the BUN:Cr levels. In chronic, I believe, you will see low BUN:Cr levels within normal range for 2 or 3 weeks (that is why doctors work when a person with renal problem has normal BUN:Cr since it could mean Chronic failure). In acute, the level depends on if post (say a stone), internal (ATN, AIN, Papillary necorsis...), or Pre (anything that causes low blood flow to kidney, BUN:Cr >20 since PCT will increases Urea reabs).

Just talk about ATN: there are 3 stages:
Stage 1 - failure
Stage 2 - where you have 0 urine output and everything in serum is high
Stage 3 - almost recovery where now you are urinating but you are urinating everything. Zero reabsorption by the kidney so everything is hypo.

Chronic Failure - low Vit D, metabolic acidosis, hyperphostemia, water and salt retention... (that list in FA in renal section right before ADKP is discussed).

If anyone can correct me that would be great if I am wrong.
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Hokolesqua (03-12-2012)


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