The Comparision Of Energy Requirement In Critically Ill Patients With Different Stress Grade

Objective: To classify the stress degree of critically ill patients during early disease period and measure the energy requirement of these patients by indirect calorimetry,in order to guide the nutrition support in critically ill patients with different stress grade.Methods: We collected the study polulation who were stayed in intensive care unit of Hebei General Hospital from January 2015 to December 2015.The patient who met the enrollment and exclusion criteria were selected.Methods to accurately measure energy requirement of critical illness is indrect calorimetry which is the gold standard.The study established the stress index of all patients.According to the stress index,all subjects were divided into mild stress,moderate stress and severe stress groups.Analysis the difference of energy requirement and explore the relationship between stress grade and nutrition support.Results: Total of 125 patients were enrolled in this study,of which 21 patients with mild stress,100 patients with moderate stress,4 patients with severe stress.The average energy requirement of three groups are significant difference,respectively were 16.34 + 2.32kcal/kg/d and 23.34 + 3.83kcal/kg/d,32.29 + 8.96kcal/kg/d.Compared with the energy requirement,the energy supply is lower in groups with mild and moderate stress and energy supply have no significantly difference in severe stress group.The length of ventilation and ICU stay were no difference(P = 0.78,P = 0.18).Conclusions:1 The energy expenditure of critical inllness who with different stress grade is variance.2 Low caloric diet in critically ill patients with moderate stress is disadvantageous to improve clinical outcomes.