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Synopsis: A large portion of the work done in the operating room (OR) consists of procedures that are executed in between surgical procedures, identified as change time. Purpose of the study: To evolve a method capable of identifying and measuring the amount of time required to complete various tasks during change time. To do this, we used a version of the Time Measurement Method, MTM. During a time period spanning several days, the project leader and staff recorded all activities that took place during change time. Using conclusions gathered from this data, a protocol for observations was developed. In addition, places of observation were identified from which all activities during change time could be recorded. Over a 14-day period, the staff and project leader randomly sought these observation places out during regular work hours, and ongoing activities were registered. Results: 160 activities performed during change time were identified. These could be subdivided into 10 discrete categories. Out of these categories (which constitute a significant portion of the Cumulative Staffed Operating Room (CSOR)- time), it was found that the time for Handling of Tools (17%) was the largest category, followed by Wait (15%) and Registration of Patient Information (14%). Furthermore, all categories except Wait were deemed necessary to ensure safety in the surgical setting. However, using the results as a basis for discussion, the question is who shall carry out the various tasks, as well as when they ought to be carried out. Conclusion: The method that was developed for this study is suitable for work analysis. It is also user friendly for personnel.

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