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Flashcards in ACE Review - Renal Deck (34)
1

How does the urine sodium look like in intrarenal oliguria

Urine Na is higher than 40 because it cannot retain sodium

2

How does urine osmolality look like in intrarenal oliguria

It is LESS than 350 because it cannot retain water as we'll. sodium is being lost, but water is being lost as we'll

3

What is FENa of intrarenal oliguria

It is greater than 2% because sodium is being lost

4

What is the specific gravity of urine in intrarenal oliguria

It is between 1.01 to 1.015 because sodium is being lost

5

What if the specific gravity of urine is 1.02 or higher

The oliguria is caused by prerenal causes.. The kidney is concentrating the urine and making a higher specific gravity

6

How does the urine osmolaity of a prerenal oliguria look like

Greater than 1000

7

oliguria. what is its definition

less than 0.5ml/kg/hr urine output

8

oliguria. what to fluids are used to compare to each other to define oliguria

compare the urine to plasma values

9

oliguria. what are the categories for oliguria

prerenal, renal, postobstructive

10

oliguria. what 4 things compared in urine and plasma can help you check for the category of oliguria

urea, creatinine, and sodium, and osmolality

11

oliguria. what does urine to plasma osomolality tell

the kidneys concentrating ability

12

oliguria. what urine to plasma osmolality value tell you it is prerenal

when it is greater than 1.5

13

oliguiria. what does it mean when the urine to plasma osmolality equal 1

the kidney concentration power is dead...the blood and urine both have the same osmolality

14

oliguria. what does urine to plasma creatinine measure

it reflects water conservation

15

oliguria. why is creatinine useful in diagnosing the category of oliguria

because most of creatinine is not reabsorbed

16

oliguria. what is seen in prerenal for urine to plasma

value greater than 30...because water is being sucked up and creatinine is being released....so [Cr] is high up to the 30s

17

oliguria. what is seen in renal damage of urine to plasma ratio

a value less than 20 because [Cr] is being diluted

18

oliguria. what is FENa

it is a measure of the kidney's ability to conserve sodium

19

oliguria. what is the value of prerenal FENa

less than 1%

20

oliguria. what is the value of reanl damage FENa

greater than 2%

21

oliguria. what is so good about FENa

it includes both sodium and creatinine in its calculation

22

oliguira. what is the equation for FEna

(UNa/PNa) / (UCr/PCr )

23

oliguria. how do you compare the FENa to U:PCr for prerenal

if you think about it...they are inversus of eachother...because Na is reabosorb...and Cr is not

24

oliguria. how do you think the values of Urea is similar to....to Na or Cr

it is similar to sodium...it is reabsorbed by the body

25

oliguria. what values of prenal for FEUr

less than 35% is prerenal

26

oliguria. what values of intrarenal damage for FEUr

greater than 50 is intrarenal

27

oliguria. how much of cardiac output is directed to the kidneys

25percent

28

gentamycin. what should be considered during administration of this drug

pt with decrease reanl function. they are increase risk for aminoglycoside nephrotoxicity

29

gentamycin. does one intraop dosing increase risk for renal insufficiency

yes...even on dose can cause acute tubular necrosis

30

gentamycin. low lab value might show pt at risk for aminoglycoside toxicity

low albumin

31

gentamycin. what does low albumin level mean for pt at risk for getting acute tubular necrosis

low albumin might mean pt has low liver function...(some of these pts are hepatorenal syndrom)

32

gentamycin. what can be done in OR to help decrease risk of acute tubular necrosis in renal insufficient pt. what abx can be given

admin it with a betalactaminase (pcn or cephalosporins)

33

gentamycin. what can be done in the OR to help decrease risk of acute tubular necrosis in renal insufficient pt. what antihtn

calcium channel blocker

34

gentamycin. what can the pt take for supplement and help decrease risk for acute tubular necrosis

calcium supplements