Nutrition
Clinical Protein Target & Nitrogen Balance Calculator (ASPEN / ESPEN)
Calculates daily protein requirements (g/day) across clinical conditions and evaluates 24-hour nitrogen balance.
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Parameters
Clinical Protein Target & Nitrogen Balance Calculator (ASPEN / ESPEN) Result
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Formula
Protein Goal (g/day) = Weight (kg) × Clinical Multiplier (0.6 - 2.5 g/kg)
Nitrogen Balance = (Protein Intake / 6.25) - (24h UUN + 4 g)Clinical Pearls
Prevents acute sarcopenia, ICU-acquired weakness, delayed wound healing, and ventilator dependence by matching nitrogen intake to metabolic stress.
Limitations
In severe obesity (BMI > 30), protein targets should be calculated based on Ideal Body Weight (IBW) at 2.0 g/kg IBW/day or Adjusted Body Weight.