Relationship between energy intake, prognosis and related indicators in adults after cardiac, thoracic, and vascular surgery: A prospective observational study

Background and Objectives: The study aimed to explore the association between energy intake (EI), the proportion of enteral nutrition intake (EN%), and prognostic-related indicators. Methods and Study Design: This was a prospective observational study. Patients aged 18-80 years old, who had undergone cardiothoracic surgery, were enrolled between January 2017 and January 2018. The measured REE (mREE) was evaluated by indirect calorimetry (IC). The observational data on EI, EN% and EI/mREE% were collected following admission to ICU, ICU discharge, and prior to discharge. Results: A total of 160 patients (60.6% male) were studied. The prealbumin and total protein were positively correlated with EN% at the time of ICU discharge; liver function index levels were negatively correlated with EI/mREE% at discharge (p