This prospective observational randomized study aims to determine energy, protein intake and gastrointestinal tolerance while using enteral nutrition formulas with very high protein content and enteral nutrition formulas with normal protein content.
* Differences regarding achieving protein and calorie daily targets when using enteral nutrition formulas with different protein content * Differences regarding residual gastric volume when using enteral nutrition formulas with different protein content * Differences regarding body composition when using enteral nutrition formulas with different protein content
Adult patients (>18 yrs) admitted to the ICU
Multiple trauma (Injury severity score > 18)
Intubation and mechanical ventilation upon admission in ICU or during the first 24 hours of admission, for at least 48 h
Age < 18 years
Pregnant women
Patients not intubated or not mechanically ventilated or receiving only non-invasive ventilation
Patients with enteral feeding contraindication 48 h after admission