Decreased urine production is called as?

Appeared in: NVS Staff Nurse - 2022

Explanation

Oliguria is the correct medical term for decreased or low urine output.
It is clinically defined as a urine volume of less than 400 mL over a 24-hour period in adults.
The presence of oliguria is a critical finding that often points to conditions like dehydration, acute kidney injury (AKI), or shock.
It signifies that the kidneys are either not being adequately perfused with blood or are unable to produce urine effectively.

Option A: Azotemia refers to the elevation of nitrogenous waste products (like blood urea nitrogen (BUN) and creatinine) in the blood, which is a biochemical finding, not a measure of urine volume.
Option B: Ischemia is the term for restricted or inadequate blood supply to a tissue or organ. While renal ischemia can lead to oliguria, it is the underlying cause, not the term for the symptom itself.
Option C: Creatinine is a specific chemical waste product from muscle metabolism that is filtered by the kidneys. It is a substance measured to assess kidney function, not a condition of low urine output.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Medical Terminology for Urine Output as background academic context rather than a clinical decision trigger.
Monitoring urine output is a fundamental nursing assessment. A widely used clinical guideline is the "30 mL/hr rule": a urine output of less than 30 mL per hour for two consecutive hours is a critical 'red flag' that requires immediate assessment and reporting, as it may signal hypovolemia or impending renal failure.
Oliguria is an early warning sign of Acute Kidney Injury (AKI). Prompt identification and intervention can prevent progression to more severe kidney damage.
What if? If a patient's urine output was greater than 3,000 mL/day, the condition would be called Polyuria. This would shift the nurse's focus to investigating potential causes like uncontrolled diabetes mellitus, diabetes insipidus, or excessive intravenous fluid administration.

How to Approach the Question

First, identify the key phrase in the question: "Decreased urine production". This is a definition-based question.
Recall or look up the medical terminology related to urine volume.
Evaluate each option:
Azotemia: Relates to waste products in the blood.
Ischemia: Relates to blood flow.
Creatinine: Is a specific waste product.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 2 p. 284-286

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 896-898

E6 Medicine Davidson Principles Practice 24e p. 411-413

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