This book addresses key principles in the optimal management of diabetes to facilitate smooth and safe anesthesia and surgery with the best possible outcomes. It addresses a range of topics, including: diabetic emergencies, glycemic control in emergencies, the routine perioperative setting, preoperative evaluation in routine and emergency surgery, intra- and post-operative management for neurosurgery, cardioCIRURGIA, gestational diabetes, bariatric surgery and other major surgeries. A dedicated chapter on Metabolic Havoc of Uncontrolled Diabetes provides the in-depth understanding of diabetic pathophysiology required in surgical situations, while a special chapter addresses commonly asked questions on surgery and diabetes. Despite many recent advances in surgery, anesthesia, and diabetes research, perioperative diabetes management is often not addressed adequately.