“…Lean healthcare applied to the ED focuses on analysing and improving the entire patient experience with the lower level of waste possible, from the moment they enter the ED to the moment they exit, including all processes, systems and stakeholders involved. In this context, it is important to develop activities of process modelling (Neuner et al, 2021), waste identification (Lisiecka-Bielanowicz and Lisiecka, 2020), value stream analysis (Le et al, 2022), visual management (Mangum et al, 2021) and continuous improvement (Denicolo et al, 2021). It should also be considered that several other aspects of the entire hospital operation have a direct impact in the ED delivery of care, and that overcrowding of ED is a major contributor to reduction of efficient and timely clinical care (Kelen et al, 2021;Yarmohammadian et al, 2017).…”