Case Presentation: Euglycemic diabetic ketoacidosis (euDKA) is increasingly recognized in the perioperative setting in patients with diabetes who are treated with sodium-glucose cotransporter-2 inhibitors (SGLT-2i). Here, we describe a rare case of a patient with prediabetes not on pharmacotherapy who developed euglycemic ketoacidosis postoperatively.A 71-year-old man with history of prediabetes (A1c 5.8%), hypertension, and childhood [...]