What laboratory value change should indicate to a nurse that a patient with renal failure has entered the oliguric stage?
Blood volume decreases.
Blood urea nitrogen (BUN) level rises
Urine osmolality increases.
Serum calcium increases.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. “It is a normal postoperative expectation.” Hematuria is common immediately after renal transplantation due to surgical trauma and typically resolves as healing occurs.
B. “It is related to the immunosuppressant drugs taken before transplantation.” Immunosuppressant drugs do not cause hematuria directly.
C. “It is caused by dye injected during surgery.” Dye is not routinely used in renal transplantation, and hematuria would not be related to this.
D. “It is caused by a small vessel that may be bleeding but will coagulate as urine flow increases.” While small vessel bleeding can occur, it is better to explain the hematuria as a normal postoperative expectation.
Correct Answer is ["4"]
Explanation
Order: 40 mg IV daily
Available: 10 mg/mL
To calculate the volume:
Volumetoadminister= Ordered dose /Available concentration
= 40mg /10mg /ml
= 4ml
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