This document discusses pre, intra, and postoperative care. Preoperative care begins with the decision for surgery and continues until the patient reaches the operating room. It involves gathering patient information, optimizing their condition, choosing a surgery, and documenting the plan. Steps include taking a history, doing an examination, ordering investigations, providing preoperative treatments, and documenting everything. Intraoperative care occurs from when the patient enters the operating room until leaving it. It is provided by the surgical team. Postoperative care aims to enable a successful recovery, reduce risks, and shorten hospital stays. It begins in the post-anesthesia care unit and surgical intensive care unit and involves monitoring vital signs and oxygen levels.