intake and output
Sarah Parker
Updated on May 14, 2026
The amount of fluid required by a person and the urine output varies with age, weight, activity and physical surrounding. The water intake of a 50-90 kg adult person is about 2500 to 3000 ml per day or 2 ml/kg/hour. Normally, this is accomplished by: Water consumed as drinks (usually about 2000 ml)
Why intake and output is important?
Accurate measurement and documentation of I&Os are important because medications, intravenous and fluid administration, dietary decisions and tube feeding physician orders are based on I&O 24-hour totals. The numbers provide real-time data that guides daily care of the patient.
How do you measure patient intake and output?
At least every 8 hours, record the type and amount of all fluids he’s received and describe the route as oral, parenteral, rectal, or by enteric tube. Record ice chips as fluid at approximately half their volume. Record the type and amount of all fluids the patient has lost and the route.
Should intake be higher than output?
The person is said to be in negative fluid balance if his output is greater than his intake. Conversely, a positive fluid balance occurs when intake is greater than output. If the difference is alarming, consult your doctor.
Is 3 liters of urine high?
Adults usually make about 3 liters of urine per day. But with polyuria, you could make up to 15 liters per day. It’s a classic sign of diabetes. A few other conditions make you need to pee more often, such as an overactive bladder, an enlarged prostate, and urinary tract infections.
What is normal intake?
The U.S. National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids a day for men. About 11.5 cups (2.7 liters) of fluids a day for women.
What is fluid balance chart?
The fluid balance chart has been a document in the healthcare system for over 50 years and is a non-invasive tool to assess the hydration status of patients. It is a chart that documents a patients’ water input and output in a 24 hour period.
What is normal fluid balance?
In order to maintain homeostasis, the adult human body needs a fluid intake of 2-3 litres (25-30ml / kg per day), allowing it to keep a balance of the nutrients, oxygen and water, which are necessary to preserve a stable healthy internal environment.
What is intake and output monitoring?
Input /output monitoring can also be called as fluid management in the body which is essential as it allows the metabolic activities of the body to function in a normal manner. The input of the fluid is assessed through thirst and hunger and the output is measured through urine and stools from the body.
Why do nurses measure urine?
Measuring and documenting urine output may be a useful clinical observation when caring for patients who are acutely unwell and provide vital warning signs of a failing kidney. Urine output and fluid balance measurements are an essential element of the patient’s vital signs.
What does intake include?
Calculate Intake
Calculating a patient’s daily intake will require you to record all fluids that go into the patient. This includes oral intake, tube feedings, intravenous fluids, medications, total parenteral nutrition, lipids, blood products, dialysis fluids and flushes.
How do you calculate output?
Total output can be measured two ways: as the sum of the values of final goods and services produced and as the sum of values added at each stage of production. GDP plus net income received from other countries equals GNP. GNP is the measure of output typically used to compare incomes generated by different economies.
Is vomit considered output?
The staff also needs you to record all output – all urine, stool and emesis (vomit). A staff member will subtract the output from the intake to find your child’s fluid balance. If your child is an infant, it is important that his diaper be checked or changed every 2 hours.
Do ice chips count as intake?
Here is a list of foods to consider when you’re counting fluid intake: Coffee and tea. Gelatin. Ice chips or cubes.
How do you monitor fluid intake?
Keep a daily log until you are able to keep track of fluids without measuring. You may find it helpful to track your fluids by filling up a bottle or pitcher with the same amount of water as your daily fluid limit (for example, 64 ounces/2,000 cc).
Is it normal to pee 15 times a day?
However, frequent urination can be linked to other health issues that aren’t normal parts of life and don’t fade over time. It can be a symptom of more serious conditions like diabetes, overactive bladder syndrome, UTIs or prostate problems. Needing to urinate frequently can even disturb your sleep.
Is it normal to urinate every hour?
It’s considered normal to have to urinate about six to eight times in a 24-hour period. If you’re going more often than that, it could simply mean that you may be drinking too much fluid or consuming too much caffeine, which is a diuretic and flushes liquids out of the body.
How many ml of urine per hour is normal?
Normal urine output is 1-2 ml/kg/hr. To determine the urine output of your patient, you need to know their weight, the amount of urine produced, and the amount of time it took them to produce that urine.