What is the definition of oliguria?

Oliguria is defined as the production of a scant amount of urine, specifically less than 500 mL in a 24-hour period. This condition may indicate underlying issues such as dehydration, kidney dysfunction, or other medical problems that affect urine output. Recognizing oliguria is crucial in clinical settings, as it can be a signal of serious health concerns requiring prompt evaluation and intervention.

In contrast, the other definitions presented do not align with the accepted medical definition of oliguria. Increased urine production refers to a different condition, while normal output and complete absence describe entirely different urinary statuses that do not involve oliguria. Understanding these distinctions is important for effective patient assessment and management in healthcare.