Which of the following activities is NOT included in preliminary room preparation before the first case?

Damp dusting with a lint-free cloth moistened with 70% isopropyl alcohol is an essential practice in maintaining a sterile environment, but it is typically not classified as a preliminary room preparation activity. Instead, it is a cleaning and disinfection procedure that may be conducted periodically or in response to specific contamination concerns within the operating room.

In contrast, restocking supplies on the surgical cart, ensuring that equipment is functional, and checking for the cleanliness of the environment are all critical components of preliminary room preparation. These activities ensure that the surgical environment is ready for the first case, providing the necessary materials and equipment and confirming that the area is clean and safe. This preparation is vital in reducing the risk of surgical site infections and ensuring overall efficiency and safety during the procedure.

Thus, while damp dusting is an important part of maintaining a sterile and clean environment, it does not fit within the specific tasks that are performed during the preliminary preparation for a surgical case.