Jones CE, et al. - Researchers here explored the use of preoperative hemoglobin A_1c (HbA_1c) and early postoperative glucose levels for predicting postoperative complications and readmission. In the current study, in contrast to the elevated preoperative HbA_1c, early postoperative hyperglycemia was associated with increased readmission. They observed an increased postoperative glucose level checks and insulin use with a higher preoperative HbA_1c, suggesting that heightened postoperative vigilance and a lower threshold to treat hyperglycemia could explain this finding.