NCLEX-Style Practice Quiz Acute Renal Failure and Answers with Solutions 2025

28. Which sign indicated the second phase of acute renal failure? 1. Daily doubling of urine output (4 to 5 L/day) 2. Urine output less than 400 ml/day 3. Urine output less than 100 ml/day 4. Stabilization of renal function - ANSWER 28. Answer: 1. Daily doubling of urine output (4 to 5 L/day) Daily doubling of the urine output indicates that the nephrons are healing. This means the patient is passing into the second phase (dieresis) of acute renal failure. 41. Your patient returns from the operating room after abdominal aortic aneurysm repair. Which symptom is a sign of acute renal failure? 1. Anuria 2. Diarrhea 3. Oliguria 4. Vomiting - ANSWER 41. Answer: 3. Oliguria Urine output less than 50ml in 24 hours signifies oliguria, an early sign of renal failure. Anuria is uncommon except in obstructive renal disorders. 42. Which cause of hypertension is the most common in acute renal failure? 1. Pulmonary edema 2. Hypervolemia 3. Hypovolemia 4. Anemia - ANSWER 42. Answer: