In evaluating improvements in care delivery, what is the primary purpose of the Plan-Do-Study-Act (PDSA) cycle?

• A. To implement change immediately
• B. To document the change after implementation
• C. To plan, do, study, and act to test a change
• D. To audit finances only

Answer: (C)

The idea being tested is that meaningful improvement comes from a deliberate loop of planning a change, trying it on a small scale, studying the results, and acting on what’s learned to refine the change before wider use. In the plan phase, you decide what change to test and how you’ll measure its impact. In the do phase, you implement the change on a limited scale. In the study phase, you analyze the data to determine whether the change produced the desired improvement. In the act phase, you decide to adopt the change, adjust it and test again, or abandon it and start a new cycle. This iterative, evidence-based approach supports learning and continuous improvement in care delivery rather than rushing to full implementation.

Choosing immediate implementation skips the learning cycle and risks repeating problems. Focusing only on documenting the change after it’s done misses the opportunity to learn from real-time results. Auditing finances is not the purpose of PDSA, which centers on testing changes in clinical processes and workflows to improve quality of care.