ATI LPN
Urinary System Multiple Choice Questions Questions
Question 1 of 5
The nurse is reviewing data for a patient with acute kidney injury. Which of the following diagnostic test results would the nurse recognize as being indicative of kidney injury?
Correct Answer: B
Rationale: Serum creatinine 4.2 mg/dL (B) far exceeds 1.5 mg/dL, indicating kidney injury. BUN 40 (A), fixed SG 1.010 (E), and output 100 mL/24h (F) also suggest AKI, but creatinine is most specific; uric acid (C) and hematocrit (D) are less direct, making B key.
Question 2 of 5
A kidney biopsy has been scheduled for a patient with a history of acute renal failure. The patient asks the nurse why this test has been scheduled. What is the nurses best response?
Correct Answer: D
Rationale: A biopsy (D) diagnoses and evaluates kidney disease extent, indicated for unexplained failure or proteinuria. It's not routine (A), tied to x-rays (B), or pre-transplant (C), making D the best explanation.
Question 3 of 5
Results of a patients 24-hour urine sample indicate osmolality of 510 mOsm/kg, which is within reference range. What conclusion can the nurse draw from this assessment finding?
Correct Answer: C
Rationale: Normal osmolality (300-900 mOsm/kg) like 510 (C) shows kidneys can concentrate urine. It's not about acid-base (A), potassium (B), or erythropoietin (D), making C the conclusion.
Question 4 of 5
A client with bulimia nervosa is receiving care. The nurse understands that the primary goal of treatment is to:
Correct Answer: B
Rationale: Electrolyte imbalances from purging behaviors are a key concern in bulimia nervosa.
Question 5 of 5
A football player is thought to have sustained an injury to his kidneys from being tackled from behind. The ER nurse caring for the patient reviews the initial orders written by the physician and notes that an order to collect all voided urine and send it to the laboratory for analysis. The nurse understands that this nursing intervention is important for what reason?
Correct Answer: A
Rationale: Hematuria is the most common manifestation of renal trauma; its presence after trauma suggests renal injury. Hematuria may not occur, or it may be detectable only on microscopic examination. All urine should be saved and sent to the laboratory for analysis to detect RBCs and to evaluate the course of bleeding. Measuring intake and output is not a function of the laboratory. The laboratory does not save urine to test creatinine clearance at a later time. The laboratory does not monitor the urine for sodium or potassium concentrations.