Oliguria

One speaks of oliguria (from the Greek oligos = " little, small" and Latin urina or greek ouron = " urine " ), produced by the kidneys when the amount of urine per day is less than 500 ml. In a further decrease in urine output ( less than 100 ml per day) is spoken by a anuria.

A oliguria may indicate too low a fluid intake. In older people, this often happens due to the decreased sense of thirst and an aged so absolutely inadequate fluid intake. But oliguria may also occur when people with an increased loss of fluid to which it eg in great physical exertion ( heavy laborers, athletes, sweating) can or existing diabetes mellitus come relatively insufficient drink.

Furthermore oliguria occurs as a sign of kidney malfunction or hypodynamen shocks.

At a urinary obstruction occurs in contrast with a closure or otherwise functional impairment of the urinary tract. In the area of the lower urinary tract ( bladder and urethra), this results in an impaired urinary excretion, which may present as oliguria. A chronic obstruction in the range of only one ureter can remain completely asymptomatic, however, despite the possible destruction of the upstream kidney, as a healthy solitary kidney has ample scope for compensation.

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