In the past few decades, the field of perioperative medicine has made significant progress. Perioperative medicine is the backbone of anaesthesiology, nursing, and surgery, and we have a responsibility to disseminate the most up-to-date information to our colleagues on the front lines and in all disciplines that deal with perioperative medicine management. Clinicians must become familiar with the most recent developments in this field and the scientific knowledge to allow the safe practice of surgery, anesthesia, and perioperative care. As such, this book provides the fundamentals as well as modern approaches and the latest updates on perioperative medicine. We conclude our work by emphasizing that sharing knowledge stands as one of humanity's greatest acts; as Lao Tzu once said, "Give a man a fish and you feed him for a day. Teach him how to fish and you feed him for a lifetime."