Comparison of the Efficacy and Satisfaction of Blood Glucose Management Between Continuous Glucose Monitoring Versus Traditional Self-blood Glucose Measurement in Diabetic Patients After Pancreatectomy

Inclusion Criteria: * Patients over 19 years of age * Preoperative diabetes history * Patients who underwent subtotal or total pancreatectomy * Patients who were diagnosed with diabetes mellitus in the evaluation of endocrine function test on the 7th day after pancreaticoduodenectomy, central pancreatectomy, or distal pancreatectomy Exclusion Criteria: * Patients who have used continuous blood glucose measurement device more than once before. * Elderly patients who are not accustomed to using the smartphone applications * Serious systemic diseases that can affect diabetes (chronic kidney disease, heart failure, decompensated liver cirrhosis, etc.) * Steroid user during the study period * Major medical or psychiatric condition that will affect response to treatment