Practice Question
During the oliguric phase of acute renal failure, which of the following occurs?
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Correct Answer:
Urine output (UO) is less than 400 mL/24 hours.
Rationale:
💠 The oliguric phase of acute renal failure (ARF) is characterized by a marked reduction in urine output, typically less than 400 mL per day. This phase reflects severely impaired glomerular filtration.
💠 In this phase, the kidneys retain metabolic wastes, electrolytes (especially potassium), and fluids, leading to complications such as hyperkalemia, metabolic acidosis, and fluid overload.
💠 Despite low urine output, urine production does not stop completely — this distinguishes oliguria from anuria, where UO is <100 mL/day.
💠 Close monitoring of intake and output (I&O) is critical during this phase for early identification of renal recovery or deterioration.
💠 Management includes fluid restriction, monitoring serum electrolytes, and sometimes dialysis if complications occur.
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This question is from Indiana University OB-Maternal exam 3 which contains 44 questions.
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Question Details
- Category: RN Nursing Exam(s)
- Subcategory: General Exams
- Domain: 🤱🏼Maternity & Newborn Care
- Answer Choices: 4