Critical Care

24-Hour Cumulative Fluid Balance & Fluid Overload Index

Calculates 24-hour net fluid balance (Intake vs Output) and percentage fluid overload (% FO).

Enlarge

Parameters

24-Hour Cumulative Fluid Balance & Fluid Overload Index Result

Formula

Net Balance (mL) = Total Intake (IV + Enteral + Blood) - Total Output (Urine + Drains + GI + Insensible + CRRT)
% Fluid Overload = (Net Balance [L] / Baseline Weight [kg]) × 100

Clinical Pearls

Quantifies daily fluid accumulation to prevent complications of fluid overload (pulmonary edema, intra-abdominal hypertension, delayed wound healing, and prolonged ICU length of stay).

Limitations

Insensible losses from skin and respiratory tract are approximations and may increase with tachypnea, open abdomen, or extensive burns.