Balanço hídrico 24h
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The 24-hour fluid balance calculator is used to track total fluid intake and output over a day. It helps identify imbalances that may signal kidney issues, edema, or complications in hospitalized patients. The basic formula is 'Intake − Output', where 'Intake' includes consumed and administered fluids (like IV solutions), and 'Output' covers urine, sweat, and other eliminations.
This tool is particularly valuable in nephrology clinics for monitoring patients with impaired kidney function or in intensive care units. For example, dialysis patients require strict fluid tracking to avoid overload. It's also applied in heart failure cases or complex surgeries, where fluid control is critical.
When using the calculator, it's essential to record all intake and output sources accurately. Approximate measurements (like estimated sweat) can reduce result reliability. Always consult a doctor to interpret data, especially in cases with significant deviations.
Frequently asked questions
What counts as 'intake' and 'output' in the calculation?
Intake includes consumed fluids, IV drips, and liquid medications. Output covers urine, stool, sweat, and medical drains. Record each source precisely.
How does it help in kidney failure cases?
It detects excessive fluid retention or loss, aiding in adjustments to treatments like diuretics or fluid restrictions.
Can I use this tool at home?
Yes, but accuracy depends on rigorous measurements. Consult a professional for validation in critical cases.
Why is 24 hours the standard period?
This timeframe captures natural variations in consumption and elimination, offering a complete daily hydration view.
What if the balance is negative?
A negative result (output > intake) may indicate dehydration. Adjust hydration and consult a doctor if persistent.