What does the term "oliguria" refer to?

Oliguria refers to a clinical condition characterized by a decrease in urine output, typically defined as less than 400 milliliters in a 24-hour period. This term is often used in the context of assessing kidney function and can indicate various medical conditions, ranging from dehydration to acute renal failure or urinary tract obstruction. Recognizing oliguria is crucial in clinical settings, as it may necessitate further investigation into the underlying causes and appropriate management strategies.

In contrast, increased urine output is known as polyuria, while normal urine output refers to the expected range, which varies based on factors such as hydration and overall health. Intense urination is not a medically precise term, and thus does not accurately describe a specific condition related to urine output, reinforcing the importance of understanding terminology in clinical practice.