Abstract: Objective To investigate the difference between structured triglyceride(STG) and Non- structured triglyceride(NSTG) in nutritional support for perioperative patients.Methods A nationwide survey was conducted through online questionnaire.The questionnaire consisted of four modules:questionnaire information,patient information,prescription investigation and postoperative observation.SPSS 24.0 software was used for statistical analysis.Results Before and after parenteral nutrition(PN),the average levels of albumin(ALB) increased in both groups(P<0.01),while the levels of C-reactive protein(CRP) and alanine aminotransferase(ALT) decreased(P<0.01).The difference in serum triglyceride(TG) levels in the STG group was not statistically significant,while there was a decrease in the NSTG group(P<0.05).Generalized linear equation analysis of repeated measurements showed that compared to the NSTG group,the increase in ALB levels in the STG group patients was more significant(P<0.001),CRP and ALT decreases were more pronounced(P<0.001),but the impact on TG was smaller.Conclusions For perioperative patients with parenteral nutrition,STG supplementation can bring significant clinical benefits.STG should be used according to the organ function and economic situation of patients.

Key words: parenteral nutrition；structural triglyceride；perioperative