A nurse is monitoring the urinary output of an adult client who had a colon resection.Which of the following 24-hr output totals indicates oliguria?

Choice A rationaleA 24-hour urinary output of 380 mL falls below the generally accepted threshold for oliguria in adults. This reduced output could indicate kidney dysfunction or decreased renal perfusion following surgery.Choice B rationaleA 24-hour urinary output of 600 mL is within the low end of the normal range for adult urinary output, which is generally considered to be 800 mL to 2000 mL per 24 hours.Choice C rationaleA 24-hour urinary output of 550 mL is also within the low end of the normal range for adult urinary output. While lower than average, it does not meet the criteria for oliguria.Choice D rationaleA 24-hour urinary output of 720 mL is within the normal range for adult urinary output and does not indicate oliguria.