and Poehiling Medical Center has a single operating room that is used by local physicians to materials costs (drugs and medical devices). physican surgical time, and operating room overhead. On January 1 of the current year, the annual operating room overthead is estmated to b Disposable supplies Depreciation expense addition, the operating room will be shut down two weeks per year for general repairs ) a. Determine the predetermined operating room overhead rate for the year. work saved ka64 PM 1/20/2019