Objective To evaluate the effects of real-time continuous glucose monitoring(RT-CGM) system on oxidative stress and mortality in critically ill patients and to explore the correlation between glucose index,oxidative stress and mortality. Methods 123 selected cases of Objective To evaluate the effects of real-time continuous glucose monitoring (RT-CGM) system on oxidative stress and mortality in critically ill patients and to explore the correlation between glucose index, oxidative stress and mortality. Methods 123 selected cases of