Elevated fasting blood glucose within the first week of hospitalization was associated with progression to severe illness of COVID‐19 in patients with preexisting diabetes: A multicenter observational study

Ling, Ping; Luo, Sihui; Zheng, Xueying; Cai, Guoqi; Weng, Jianping

Highlights: Fasting blood glucose < 10 mmol/L was proposed as a target of glycemic control during the first week of hospitalization in patients with preexisting diabetes. Poor HbA1c levels prior to coronavirus disease 2019 (COVID‐19) might not be associated with severity among patients with preexisting diabetes. Mean blood glucose seemed not to be associated with poor prognosis of COVID‐19. [Image: see text]Dynamics of fasting blood glucose, mean 2‐hour postprandial blood glucose of coronavirus disease 2019 (COVID‐19) patients with preexisting diabetes. This figure depicts the average values of (A) fasting blood glucose, (B) daily mean 2‐hour postprandial blood glucose of COVID‐19 patients with preexisting diabetes. Red lines represent the patients with preexisting diabetes who progressed to severe illness during admission (n=23), and blue lines represent those with preexisting diabetes who stayed nonsevere (n=26)