Li X, et al. - In this retrospective observational study, researchers evaluated how short-term outcomes were altered by glucose variability in non-diabetic patients undergoing coronary artery bypass grafting surgery (CABG). They analyzed data for 137 non-diabetic patients undergoing CABG from January 2011 to June 2013 collected after patients left the hospital. The definition of hyperglycemia was mean postoperative blood glucose ≥ 7.00?mmol/L, and patients with mean of daily difference (MODD) ≥ 1.40?mmol/L were considered abnormal. Findings revealed intensive care unit (ICU) stay duration in those with hyperglycemia was longer. Also, higher incidences of arrhythmia were seen among those with large glucose variability (abnormal MODD). Results also suggested that occurrence of arrhythmia could be influenced by MODD and duration of ICU stay could be affected by mean postoperative blood glucose levels, as revealed in regression analysis.