Which urine test provides the most accurate measurement of renal function?
Specific gravity
Creatinine
Phosphates
BUN
The Correct Answer is B
A. Specific gravity: Specific gravity measures urine concentration but does not directly assess renal function.
B. Creatinine: Serum creatinine levels provide the most accurate measure of renal function as they reflect the kidney’s ability to filter waste.
C. Phosphates: Phosphate levels are affected by kidney function but are not the most direct measure.
D. BUN: Blood Urea Nitrogen (BUN) can be affected by other factors like hydration and protein intake, making it less reliable than creatinine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Blood volume decreases: While fluid imbalances are common in renal failure, the oliguric stage is marked by fluid retention, not decreased blood volume.
B. Blood urea nitrogen (BUN) level rises: The oliguric stage is characterized by reduced urine output, leading to waste product accumulation, including elevated BUN levels.
C. Urine osmolality increases: In renal failure, urine osmolality may remain low or not reflect changes due to impaired kidney function.
D. Serum calcium increases: Serum calcium often decreases in renal failure due to disturbances in vitamin D metabolism and phosphate retention.
Correct Answer is A
Explanation
A. Flat plate: A flat plate of the abdomen (plain X-ray) is safe and does not involve contrast dye.
B. Intravenous pyelogram: This procedure involves the use of contrast dye, which is nephrotoxic and contraindicated in patients with renal insufficiency or diabetes mellitus due to the risk of worsening kidney function.
C. Ultrasonography: Ultrasounds do not involve dye or radiation and are safe for patients with renal insufficiency or diabetes.
D. Renal scan: While renal scans can involve radioactive material, they are generally safer for assessing kidney function in these patients compared to an IV pyelogram.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.