Lecture 38 - Renal

Question 1

State the average glomerular filtration rate of a person per day, hour and minute. State the average urine production rate of a person per day, per hour and per minute. Be prepare to calculate the absorption rate for the same units and state what the minimum urine production rate can be without a person being in renal failure.

Answer 1

GFR:

180 L/day
7.5 L/HR
125 ml/min

Urine Production:

1.4-1.8 L/day
60-75 ml/HR
1.0-1.25 ml/min

(99% is reabsorbed)

Minimal urine output:

400 ml/day .278ml/min

Question 2

Renal insufficiency

Answer 2

Decline of renal function to about 25% of normal or GFR less than 25-30 ml/HR

Question 3

Renal end stage failure

Answer 3

Renal function less than 10% normal

Question 4

Oliguria

Answer 4

Production of abnormally low rates of urine.

Decreased GFR and urine production rate