How to read a fluid balance chart
Other platforms explain it with text and video. In VMS you practice it on the patient.
A fluid balance chart shows whether a patient is gaining or losing fluid. Small recording gaps add up fast, so read it with care.
Step by step
Check the time period
Confirm the start and end times, usually 24 hours or one shift. Make sure no hours are missing. [1]
Add all intake
Include drinks, IV fluids, IV medicines and flushes, tube feeds and blood products. [2]
Add all output
Include urine, drains, vomit, liquid stool and stomach suction. Losses from sweat and breathing are not measured but can be several hundred mL a day. [2]
Work out the net balance
Subtract total output from total intake. A positive number means fluid gained; a negative number means fluid lost. [1]
Check hourly urine output
In adults, less than 0.5 mL per kg per hour for several hours is a warning sign of poor blood flow or kidney injury. [3]
Compare with weight and vital signs
A change of 1 kg in daily weight is about 1 liter of fluid. Look at blood pressure, heart rate, swelling and lung sounds too. [3]
Report and plan
Share the balance with the team, adjust the fluid plan and document it clearly. [1]
Common errors
- Forgetting IV medicines and flushes as intake.
- Leaving gaps in hourly urine recording.
- Reading the balance without checking daily weight.
Practice it in VMS
In VMS you do this on the patient, not on paper: every step goes on the checklist with a score, and in Teach mode Blocky tells you what comes next.
VMS cases that train this skill
Sources
- AAMC Core Entrustable Professional Activities (Core EPAs)
- Open RN, Nursing Fundamentals 2e (CC BY 4.0)
- NCCPA PANCE Content Blueprint
Facts and steps follow AAMC Core Entrustable Professional Activities (Core EPAs); NCCPA PANCE Content Blueprint. VMS is not affiliated with these organizations. Updated: 2026-10-11.