Which term describes urine output less than 400 mL per day?

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Multiple Choice

Which term describes urine output less than 400 mL per day?

Explanation:
Understanding how urine output is categorized helps when assessing kidney function and fluid balance. Urine output less than 400 mL in 24 hours is described as oliguria. This term specifically denotes reduced urine production and is commonly used in clinical settings to flag a significant drop in output. In contrast, anuria means essentially no urine production (very minimal output, often under 100 mL/day), dysuria refers to painful or difficult urination, and polyuria means excessive urine production (typically over about 2.5 L/day). So, for urine output under 400 mL per day, the correct term is oliguria.

Understanding how urine output is categorized helps when assessing kidney function and fluid balance. Urine output less than 400 mL in 24 hours is described as oliguria. This term specifically denotes reduced urine production and is commonly used in clinical settings to flag a significant drop in output. In contrast, anuria means essentially no urine production (very minimal output, often under 100 mL/day), dysuria refers to painful or difficult urination, and polyuria means excessive urine production (typically over about 2.5 L/day). So, for urine output under 400 mL per day, the correct term is oliguria.

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