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24 Cards in this Set
- Front
- Back
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First signs of ARF
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dec. GFR and inc. creatine in plasma, azotemia
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Anuria level
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less then 100 ml/day
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Oligouria
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less then 500 ml/day
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NL urine level
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700-2000
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polyuria
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greater then 2500
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Late sign of ARF
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uremia
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When you order for creatine clearance test
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for possible renal failure or disease, or people on nephrotoxic drugs such as some antibiotics (aminoglycosides)-genta, strepto,neo, tobra
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normal creatine levels
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75-125
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Normal plasma creatine
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less then 1.2 mg/dl
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Normal total urine of creatine/day
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1-2 g/24 hours
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Causes of prerenal failure
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stenosis, systemic hypotension, edema; basically anything that decreases renal perfusion and would decrease GFR
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causes of renal intrinsic azotemia
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hypertension
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Most important determinent of body fluid volume
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Na
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What is FEna
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amount of sodium actually excreted in the urine
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Equation for FEna
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(Una x Pcre/Pna x Ucre) x100
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Excess Na
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FEna may reach 5%
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Little Na
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FEna may only be .1%
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FEna that determines prerenal failure
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Less then 1%
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FEna that determines renal intrinsic failure
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greater then 2%
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FEna that determines post renail filure
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greater then 4%
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NL BUN/Cre levels
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10-15
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Pre renal BUN/cre levels
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20 or 30
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A prerenal failure patient progresses to ATN but BUn/Pre returns to normal due to:
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Tubular damages prevents reabsorptoin of Na which causes decreases reabsorption of urea; creatine clearance begins to dec and plasma cre starts to increase
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Normal glucose in blood
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60-110
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