Fluid vs Weight 24 Hour Balance

More Than a Number: Why Daily Fluid Balance Alone Should Not Guide Clinical Decision-Making in the ICU: A Prospective Observational Study

Daily Fluid Balance vs Weight Change

The daily fluid balance will be compared to 24hour weight change in critical care patients. The design will be prospective observational study. The data will be gathered using Linet automatic built in weight in Linet beds and for fluid balance will be used standard nurse charting method. The main outcome will be limit of agreement between daily fluid change and 24hour weight change.

Inclusion criteria:

- adult (age ≥ 18 years) patients admitted to intensive care unit.

Exclusion criteria:

• age <18 years
• pregnancy
• inability to obtain standardized daily body weight using the ICU bed scale
• incomplete 24-hour fluid balance data preventing calculation of cumulative balance
• absence of an indwelling urinary catheter, extracorporeal life support (ECMO) or other extracorporeal circulation
• open abdomen
• open chest
• lavage or irrigation procedures during the assessment interval
• surgery during the assessment
• massive bleeding
• diarrhoea during the assessment period
• massive transfusion protocol during the 24-hour interval and ICU stay shorter than 24 hours.