Achieving nuTritional Target in criticAlly Ill patieNts With iMpairEd gastroiNtesTinal Dysfunction

Nutritional targets are based on ESPEN guidelines recommendation (calories administration based on indirect calorimetry study, proteins 1.3 g/kg/day). From the first day of ICU admission indirect calorimetry will be performed daily in order to evaluate energy requirements. On the fourth day, the patient will undergo a gastric residual volume measurement and a paracetamol absorption test. If gastrointestinal dysfunction is detected, the patient will be assigned to a study group based on the randomization protocol. The SPN group will gradually initiate supplemental parenteral nutrition in order to achieve the target of 80% by the fifth day. Trophic feed will be administered to cover the remaining 20% of the targeted nutrition intake.