What is oliguria?

Oliguria refers to a condition characterized by a significant reduction in urine output—typically defined as producing less than 400 milliliters of urine in a 24-hour period. It can be a sign of underlying health issues, such as dehydration, kidney problems, or urinary obstruction. Recognizing oliguria is crucial in clinical practice because it can indicate potential renal impairment and necessitate further evaluation and intervention to prevent complications.

The other options do not accurately describe oliguria. Excessive urine output would suggest a different condition, such as polyuria, while absence of urine would indicate anuria, which is a more severe condition. Normal urine output does not apply to oliguria, since it denotes a lack of sufficient urine production. Understanding these distinctions helps in identifying and addressing the patient’s needs effectively.