Anuria - Definition

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Anuria defines the absence of urine in the bladder, but by extension, the cessation of urination. It's called oliguria when the daily volume of urine is inferior to 16 fluid ounces. It's called excretory anuria when the kidneys continue to produce urine, but the urine is not expelled from the body: known as acute retention of urine. Generally, this form of anuria is due to stones in the urinary tract. The treatment consists of removing the obstacle. Secretory anuria consists in a cessation of the production of urine and is generally due to an advanced or terminal renal deficiency. The patient is then put on dialysis: this is a machine that performs the functions normally accomplished by the kidneys several times a week.