This article describes a framework for evaluating efficiency of OR procedures incorporating time measurement, personnel activity, and resource utilization using traditional industrial engineering tools of time study and work sampling.
The framework measures time using time studies of OR procedures and work sampling of personnel activities, ultimately classified as value-added or non-value-added. Statistical methods ensure that the collected samples meet adequate levels of confidence and accuracy. Resource utilization is captured through documentation of instrument trays used, defects in instruments, and trash weight and classification at the conclusion of surgeries.
A case study comprising 12 observations of total knee arthroplasty surgeries illustrates the use of the framework. The framework allows researchers to compare time, personnel, and resource utilization simultaneously within the OR setting.
The framework provides a holistic evaluation of methods, instrumentation and resources, and staffing levels and allows researchers to identify areas for efficiency improvement.
The methods presented in this article are rooted in traditional industrial engineering work measurement methods but are applied to a healthcare setting in order to efficiently identify areas for improvement including time, personnel, and processes in operating rooms.
