Association Between Preoperative Hemoglobin A_1cLevels, Postoperative Hyperglycemia, and Readmissions Following Gastrointestinal Surgery

Abstract

Early postoperative hyperglycemia was associated with increased readmission, but elevated preoperative HbA1c was not. A higher preoperative HbA1c was associated with increased postoperative glucose level checks and insulin use, suggesting that heightened postoperative vigilance and a lower threshold to treat hyperglycemia may explain this finding.