The PDSA Cycle: A Powerful Tool for NHS Process Improvement
A Framework for Improvement
As an NHS professional, you are likely no stranger to the constant pursuit of improvement in patient care and operational efficiency. One of the most effective tools in your arsenal for achieving this is the Plan-Do-Study-Act (PDSA) cycle. In this blog, I will delve into what the PDSA cycle is, its relevance to the NHS, and how you can apply it to drive meaningful improvements in your daily work.
What is the PDSA Cycle?

The PDSA cycle is a systematic approach to testing and implementing changes, originally developed by Walter Shewhart and later popularized by W. Edwards Deming. It is a four-stage process that mirrors the scientific experimental method, making it a pragmatic and flexible tool for quality improvement (QI) initiatives. You may also hear of the PDCA cycle – plan, do, check, act. It is essentially the same thing as the PDSA (obviously with a ‘c’ and not an ‘s’).
Plan – Getting ready for the improvement
The first stage of the PDSA cycle is the Plan phase. Here, you define what you want to achieve, formulate specific questions to be answered, and make predictions about the outcomes of your desired change. This stage involves careful planning, including identifying the change to be tested, how it will be implemented, and what data will be collected to measure its impact. For example, if you are looking to reduce the time patients spend waiting in the emergency department, your plan might include redesigning the triage process, training staff on new procedures, and collecting data on wait times before and after the change.
Do – Make the change
In the Do phase, you carry out the test of change according to your plan. This involves executing the planned intervention on a small scale to minimise risk and maximise learning. It is crucial to record observations, including any unexpected outcomes, to ensure that all aspects of the change are captured. For instance, if you are testing a new electronic prescription system, you might start by implementing it in one ward and monitoring its use over a week.
Study – Did you get what you expected?
The Study phase is where you compare the actual results of your test with your initial predictions. Here, you analyse the data collected during the Do phase and reflect on what happened. This stage helps you understand whether the change had the desired effect and what adjustments might be needed. Continuing with my emergency department example, you would compare the wait times before and after the triage process change to see if there was an improvement.
Act – Decide on next steps
In the final Act phase, you decide what to do next based on what you learned from the Study phase. If the change was successful, you might decide to adopt it on a larger scale. If it did not meet your expectations, you could adapt the change and test it again or abandon it altogether. This phase is about integrating the lessons learned into your system and planning for the next cycle of improvement. For example, if the new triage process reduced wait times significantly, you would plan to roll it out across the entire emergency department.
Relevance to the NHS
The PDSA cycle is particularly relevant to the NHS for several reasons:

Iterative Improvement
The NHS operates in a complex and dynamic environment where changes can have unforeseen consequences. The PDSA cycle allows for iterative testing and learning, enabling you to make small-scale changes and assess their impact before scaling up. This approach reduces the risk of large-scale failures and ensures that improvements are evidence-based.
Flexibility and Adaptability
Healthcare systems are inherently variable, and what works in one setting may not work in another. The PDSA cycle’s flexibility allows you to adapt your approach based on feedback and data, ensuring that solutions are fit-for-purpose and tailored to your specific context.
Engagement and Learning
The PDSA cycle promotes a culture of continuous learning and improvement. By involving staff in the planning, execution, and evaluation of changes, you foster a sense of ownership and engagement. This not only improves morale but also ensures that knowledge and best practices are shared across the organisation.
Integration with Other QI Methods
The PDSA cycle is often used as part of broader quality improvement frameworks such as the Model for Improvement, Total Quality Management, Lean, and Six Sigma. This integration allows you to leverage the strengths of multiple methodologies to drive comprehensive improvement initiatives.
Best Practices for Implementing PDSA Cycles
- Documentation:
Documentation is key to the success of PDSA cycles. Ensure that you record every stage of the cycle, including plans, results, and lessons learned. This helps in maintaining organisational memory and allows for the transfer of learning to other settings. - Small-Scale Testing:
Start with small-scale tests to minimize risk and maximize learning. This approach also provides the flexibility to adapt changes based on feedback before scaling up. - Iterative Cycles:
Use multiple consecutive PDSA cycles, often referred to as PDSA ramps, to build up knowledge about the effectiveness of your changes. Each cycle should inform the next, leading to continuous improvement. - Stakeholder Engagement:
Engage stakeholders throughout the PDSA cycle. This includes involving staff in the planning and execution phases and sharing the results and lessons learned. This fosters a collaborative environment and ensures that improvements are sustainable.
Summary
The PDSA cycle is a powerful tool for driving quality improvement in the NHS. Its iterative and adaptive nature makes it particularly suited for the complex and dynamic healthcare environment. By applying the PDSA cycle, you can test changes systematically, learn from the results, and implement evidence-based improvements that enhance patient care and operational efficiency.
Remember, the PDSA cycle is not a one-time event but a continuous process of learning and improvement. It encourages you to think critically, act methodically, and reflect on your actions to achieve better outcomes. So, the next time you identify an area for improvement, consider using the PDSA cycle to guide your efforts. You might be surprised at the positive impact it can have on your work and the care you provide.
So What Next?
Here are a few suggestions for immediate next steps; 1. Having a good grasp of the 5 Lean principles will be incredibly useful, 2. Read more about the 3 Types of Lean Activity, 3. Get an introduction to Lean healthcare, 4. Talk to me, I’m happy to help where I can – Schedule a FREE consultation
Almco – We help busy professionals enhance operational performance by providing process improvement expertise to optimise their processes and maximise productivity.