Question

Creatinine clearance. Urine 100mg/dl, plasma 1.9mg/dl, urine volume 1375 ml/24 hours, area 1.2m,

a) 40 mL/min
b) 60 mL/min
c) 80 mL/min
d) 100 mL/min

Answer 1

Creatinine clearance is a test used to measure glomerular filtration rate (GFR) of the kidneys. It can be calculated using the formula Ccr = (Urine concentration x Urine volume) / Plasma concentration. In this case, the creatinine clearance is approximately equal to 36,184 mL/min.

Step-by-step explanation:

Creatinine clearance is used to measure glomerular filtration rate (GFR) which is the volume of fluid filtered from the renal glomerular capillaries into the Bowman's capsule per unit time. It can be calculated if values for creatinine's concentration in urine, urine flow rate, and creatinine's concentration in plasma are known. The formula to calculate creatinine clearance is UxV/B. In this case, the urine concentration is 100mg/dl, urine volume is 1375 ml/24 hours, and plasma concentration is 1.9mg/dl. Plug in these values into the formula to calculate the creatinine clearance.

Ccr = (Urine concentration x Urine volume) / Plasma concentration

Ccr = (100mg/dl x 1375 ml/24 hours) / 1.9mg/dl

Ccr = 68,750 / 1.9

Ccr is approximately equal to 36,184 mL/min