![]() Six Sigma is a methodology for process continuous improvement born in the 1980s at Motorola and subsequently successfully applied to different processes 1, in different contexts, and by many manufacturing companies 2. In our experience the application of the Lean Six Sigma methodology to the process of handling the surgical instruments from/to the OR was cost-effective, significantly decreased the costs of poor quality and increased internal stakeholder satisfaction. Regarding personnel satisfaction, 150 questionnaires were answered, and the overall score improved from 6.6 ± 2.2 pts to 7.0 ± 1.9 pts (p = 0.013). The observed improvement was estimated in approximately $19,729 of cost savings. Through this supply chain passed 314,552 instruments in 2022 and 22 OR processes were regularly assessed. The primary outcome was the analysis of Sigma improvement. ![]() ![]() We applied the Six Sigma lean methodology by conducting workshops and practical exercises and by improving the surgical instrument process chain, as well as checking stakeholders’ satisfaction. The project was based on the surgical instrument supply chain analysis. The project was conducted at the operating theatre of our tertiary regional hospital during the period from July 2021 to December 2022. This longitudinal observational study aimed to assess the impact of Six-Sigma methodology to optimize surgical instrument sterilization processes. Operating room (OR) management is a complex multidimensional activity combining clinical and managerial aspects.
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