This document discusses key aspects of operating theaters and protocols. It describes what an operating theater is and some common specialty areas like cardiothoracic surgery and orthopedic surgery. It then outlines some key areas within a hospital that support operating theaters like the pediatric operating theater, recovery room, and intensive care unit. The main part of the document details the various protocols used in operating theaters, including preparing the patient and surgeon, sterilization procedures, and infection control methods. It concludes by covering some administrative procedures for operating theater design such as storage, lounges, dressing rooms, and sleeping facilities for staff.