Excess urine output is known as?

Appeared in: UPRVUNL - 2021

Explanation

Polyuria is the correct medical term for excessive or abnormally large production or passage of urine.
It is clinically defined as a urine output exceeding 3 liters per day in adults.
This condition can result from two primary mechanisms: a solute diuresis (e.g., high glucose in diabetes mellitus) or a water diuresis (e.g., lack of antidiuretic hormone in diabetes insipidus).

Option A: Hematuria refers to the presence of blood (red blood cells) in the urine, not the volume of urine.
Option B: Pyuria refers to the presence of pus or white blood cells in the urine, which is a sign of inflammation or infection, not excessive volume.
Option C: Proteinuria refers to the presence of an abnormal amount of protein in the urine, indicating a problem with kidney filtration, not the volume of urine produced.

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 Abnormalities as background academic context rather than a clinical decision trigger.
Accurate identification and documentation of urinary abnormalities are fundamental nursing skills. Recognizing polyuria is the first step in investigating potentially serious underlying conditions like diabetes.
Nurses must monitor patients with polyuria for signs of dehydration and electrolyte imbalances, which can have severe consequences, including hypovolemic shock.
What if? If a patient has polyuria and a high blood glucose level, the priority shifts to managing hyperglycemia as the cause of the osmotic diuresis. If blood glucose is normal, the investigation would focus on other causes like diabetes insipidus or excessive fluid intake.

How to Approach the Question

First, identify the key phrase in the question stem: 'Excess urine output'.
This is a definition-based recall question. Your task is to match the description to the correct medical term.
Analyze the prefix of each option. 'Hema-' relates to blood, 'Py-' to pus, 'Protein-' to protein, and 'Poly-' to many or much.
Evaluate each option: Hematuria (blood), Pyuria (pus), and Proteinuria (protein) describe the composition of urine, not the volume.
Conclude that Polyuria, meaning 'much urine', is the only term that describes excessive volume.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 1 pp. 384-386, 382-384

E6 Textbook of Biochemistry for medical StudentsDM Vasudevan Part 2 — Subpart A (pp 1-239 of 478) p. 55-57

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