American Association of Critical-Care Nurses (AACN) Certification Practice Test

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What does oliguria indicate regarding urine output?

  1. Increased urine output

  2. Normal urine output

  3. Decreased urine output

  4. Variable urine output

The correct answer is: Decreased urine output

Oliguria refers to a condition where there is a reduction in urine output, typically classified as urine output that is less than 400 milliliters per day in adults. This decreased urine output can serve as an important clinical sign, indicating possible underlying issues such as dehydration, renal impairment, or other systemic conditions affecting kidney function. Monitoring oliguria is critical for assessing a patient's fluid balance, kidney health, and potential progression to more severe conditions like acute kidney injury. Understanding this term is essential for healthcare professionals in evaluating patients and making appropriate treatment decisions.

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