Definition of Oliguria

oliguriaOliguria is significantly reduced urine production that occurs as a consequence of renal failure, dehydration, hemorrhage (massive blood loss), or shock.

Normal adult urinary output is 1500 milliliters to 3000 milliliters per day.

In oliguria urinary output is 500 ml per day or less.

Oliguria indicates that the kidneys are not receiving enough blood or are not functioning to filter the blood.

Unless urine output increases, toxins will accumulate in the blood and the circumstance may become lifethreatening.


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