A male client is scheduled for a renal clearance test. Nurse Sheldon should explain that this test is done to assess the kidneys’ ability to remove a substance from the plasma in:
A. 1 minute.
B. 30 minutes.
C. 1 hour.
D. 24 hours.
Correct Answer: A. 1 minute.
The renal clearance test determines the kidneys’ ability to remove a substance from the plasma in 1 minute. It doesn’t measure the kidneys’ ability to remove a substance over a longer period. The glomerular filtration rate (GFR) describes the flow rate of filtered fluid through the kidneys. The gold standard measurement of GFR involves the injection of inulin and its clearance by the kidneys.
Option B: Creatinine clearance (CrCl) is the volume of blood plasma cleared of creatinine per unit time. It is a rapid and cost-effective method for the measurement of renal function. Both CrCl and GFR can be measured using the comparative values of creatinine in blood and urine.
Option C: A physician may require a creatinine clearance test from patients when routine blood creatinine levels or the estimated GFR are not within normal ranges. Patients with signs and symptoms of deteriorating kidney function are candidates for CrCl test.
Option D: Creatinine clearance is affected by sex and race. Women have less muscle mass and a lower rate of creatinine production in comparison to men. Latinos produce lower clearance values while blacks produce higher values, indicating greater muscle
No comments:
Post a Comment