Quality, Safety, and Performance Improvement
What the exam tests
Candidates must apply QI models: PDSA, Lean (waste elimination), Six Sigma (variation reduction, DMAIC), and Root Cause Analysis for sentinel events. Know failure mode and effects analysis (FMEA) as prospective risk assessment and RCA as retrospective. Understand benchmarking, control charts (common-cause vs. special-cause variation), and evidence-based practice as the basis for standards. Familiarity with National Patient Safety Goals, core measures, and never events is expected. Know the structure-process-outcome framework.
Traps
- Confusing FMEA (prospective, before an event) with RCA (retrospective, after an event).
- Reacting to common-cause variation as if it were special cause. Tampering with a stable process worsens it.
- Choosing a solution before measuring the problem. QI starts with data and a clear aim statement.
- Treating a single incident as a trend; small numbers do not establish a pattern.
- Forgetting that sustainability (hardwiring, audit and feedback, standard work) is part of improvement.
Rule of thumb
Before an event → FMEA. After a sentinel event → RCA. For variation, ask whether the process is stable. Stable process with common-cause variation → redesign the system; sudden spike (special cause) → investigate the specific event.
Worked example
A hospital wants to reduce central line infections. A question asks the best first step. Options: (A) implement a new bundle immediately, (B) form a multidisciplinary team, define the current rate and aim, and map the insertion and maintenance process, (C) discipline staff with high infection rates. B is correct: establish baseline measurement and process understanding before intervention. A skips diagnosis, and C misattributes a system problem to individuals.