Hourly Diuresis Calculator

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h min
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Hourly diuresis: ml/kg/h

Hourly Diuresis Calculator

This calculator makes it possible to simply calculate the hourly diuresis from the total volume of diuresis, collection time, and the patient's weight.

 Formula: Hourly diuresis = Total Diuresis ÷ Weight ÷ Duration (hours)

What is diuresis?

Diuresis includes the measurement of urine secreted, as well as qualitative analysis. It consists in studying what the urine contains, namely ions, water, organic compounds, bacteria, the processes of manufacture, transport, storage, and elimination of urine, and finally the urinary output. Diuresis, therefore, studies the urinary system as a whole, made up of the kidneys, ureter, bladder, and urethra. The diuresis may be insufficient, in the case of oliguria or anuria, or too great, in the case of polyuria.

Normal diuresis

From a qualitative point of view, diuresis refers

the composition of urine: water, ions, organic compounds...

to the entire urine route: formation of urine in the kidney, transport by the ureter, storage in the bladder, and finally the elimination of this urine through the urethra during urination.

From a quantitative point of view, we speak of urine output (generally expressed in L/day, mL/day, or mL/min). The terms urinary output and diuresis output are synonymous. Normal urinary output is between 800 mL and 1500 mL per day. This value depends on the amount of water absorbed.

Diuresis disorders

In kidney disease, diuresis is disturbed.

polyuria: diuresis greater than 2.5 L per day

oliguria: diuresis less than 600 mL per day

anuria: zero diuresis or less than 100 mL per day