What it means
A measure of how well the kidneys are being supplied with blood and are working. For an adult, at least 30 mL an hour, or 0.5 mL per kilogram of body weight per hour, is the usual minimum. It is recorded as part of intake and outputIN-tayk and OWT-putThe measured record of all fluids a client takes in and all fluids that leave the body over a set time.Full entry , from a catheter bag, a measuring hat in the toilet, a urinal or by weighing diapers (1 gram is about 1 mL).
For the nurse
Report hourly output below the minimum, or a sudden drop. Check that the catheter tubing is not kinked and the bag is below the bladder before deciding output is low.
In a chart
"Urine output 20 mL/hr for past 2 hours; provider notified."
At a glance
| Abbreviations | UO |
|---|---|
| Spanish | diuresis, gasto urinario |
| Also written | urinary output, UO |
Related terms
intake and output
The measured record of all fluids a client takes in and all fluids that leave the body over a set time.
oliguria
Making less urine than normal, in an adult below about 400 mL a day.
acute kidney injury
A sudden loss of kidney function over hours to days.
fluid balance
The match between the fluid that goes into the body and the fluid that leaves it.