Summary

Lean methodologies in healthcare draw on principles originally developed in manufacturing to enhance value for patients by systematically identifying and eliminating waste, optimising workflows and fostering a culture of continuous improvement. Central to this approach is the concept of value as defined by the patient’s perspective, with every activity that does not contribute to care quality or safety considered waste. Tools such as value stream mapping, standardised work and rapid-cycle problem solving are deployed to diagnose inefficiencies across clinical pathways, from emergency department throughput to surgical care processes. Implementation typically involves multidisciplinary teams empowered to analyse processes, test incremental changes and measure impacts on waiting times, length of stay, cost and staff engagement. Lean initiatives often require shifts in organisational culture towards greater transparency, frontline empowerment and data-driven decision making. When combined with complementary frameworks such as Six Sigma or the Plan-Do-Check-Act cycle, lean methodologies can provide a structured framework for both strategic alignment and day-to-day operational excellence. The global significance of lean in healthcare is reflected in its application across diverse settings—from paediatric emergency care in Scandinavia to high-volume orthopaedic surgery in Southern Europe—and in efforts to adapt core principles to local regulatory, professional and cultural contexts. Practical applications have demonstrated sustained reductions in waiting times, safer patient flows and enhanced interdisciplinary collaboration, underscoring lean’s potential to address pressures on capacity, quality and cost in health systems worldwide.

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Lean Methodologies in Healthcare Systems publication trend

The graph below shows the total number of articles in lean methodologies in healthcare systems across all publications each year (not limited to Nature Index journals).

Technical terms

Lean methodology: A management philosophy focused on maximising patient value by eliminating non-value activities and fostering continuous improvement.

Value stream mapping: A visual tool to document and analyse the sequence of activities required to deliver a service, highlighting waste and opportunities for flow improvements.

Muda: The Japanese term for waste, encompassing any activity that consumes resources without adding value to patient care.

DMAIC: A structured five-phase problem-solving cycle—Define, Measure, Analyse, Improve, Control—used to implement and sustain process improvements.

Standardised work: The detailed documentation and consistent practice of best-known methods for performing tasks, ensuring reliability and ease of improvement.

References

  1. How does lean work in emergency care? A case study of a lean-inspired intervention at the Astrid Lindgren Children's hospital, Stockholm, Sweden. BMC Health Services Research (2012).
  2. Lean thinking to improve emergency department throughput at AORN Cardarelli hospital. BMC Health Services Research (2018).
  3. Improving performances of the knee replacement surgery process by applying DMAIC principles. Journal of Evaluation in Clinical Practice (2017).
  4. Lost in translation: a case-study of the travel of lean thinking in a hospital. BMC Health Services Research (2015).

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