For the operating room management, the basis is the surgical suite, and evaluation can be divided into the duration of anesthesia, operation time, operating room time, and operating room preparation time. Anesthesia duration is divided into four moments: anesthetic induction, maintenance, awakening, and recovery. The operative time consists of dieresis, hemostasis, exeresis, and suture. Operating room time includes patient stay, from arrival to exit. Operating room preparation time (turnover) is the time between one patient leaving and another entering, including cleaning and replacing the necessary material. The lengthiest stage during a procedure is anesthesia.