Never heard of it. In the past few years, more operating rooms were located on the top floor because the top floor was relatively clean. However, in recent years, according to the requirements of the Tianjin Nursing Quality Control Center, the operating room is not allowed to be located on the first or top floor. To meet the needs of patients, the operating room should be located in an area in the hospital that is convenient for transporting surgical patients. It should be close to the critical care department and close to the surgery. Departments, pathology rooms, blood banks, disinfection supply centers and other departments. The surrounding environment is quiet and clean. Usually a single layer. Thank you for your concern about operating room design.