Understanding PDSA Cycles for the CPHQ Exam

The PDSA cycle is one of the most important quality improvement concepts on the CPHQ exam. You need to understand not just the four phases, but when and how to apply them in healthcare settings.

The Four Phases

Plan: Identify the problem, analyze root causes, and develop a theory for improvement. Define your aim statement, measures, and the specific change you will test. Decide who, what, when, and where.

Do: Carry out the test on a small scale. Document what happens, including unexpected observations. Collect the data defined in your plan.

Study: Analyze the data and compare results to your predictions. What did you learn? Was the change an improvement? Study is the critical phase that many teams rush through.

Act: Based on what you learned, decide to adopt the change, adapt it, or abandon it. If adopting, plan for broader implementation. If adapting, run another PDSA cycle with modifications.

PDSA vs PDCA

The CPHQ exam may test the distinction. PDSA (Study) emphasizes learning and understanding results. PDCA (Check) focuses on checking whether results conform to expectations. PDSA is generally preferred in healthcare quality because it encourages deeper analysis and learning from each cycle.

Common Exam Questions

Expect questions about what phase you are in given a scenario, what should happen next in the cycle, and why small-scale testing (rapid cycle improvement) is preferred over large-scale implementation. Remember: multiple PDSA cycles are expected before full implementation.