# Review the unit's Plan-Do-Study-Act timeline for reducing specimen-labeling errors and determine the next quality-improvement step. > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=394839&lang=en > language: en > subject: Performance Improvement > category: MOC ## Question Review the unit's Plan-Do-Study-Act timeline for reducing specimen-labeling errors and determine the next quality-improvement step. | Time | Data | | --- | --- | | Plan | Baseline: 8 mislabeled specimens per 1,000. Aim: fewer than 2 per 1,000. Test bedside label printing on one day shift for 1 week; track errors and collection delays. | | Do | The team runs the one-shift test and records deviations. On two occasions the printer is unavailable and staff create manual workarounds. | | Study | Rate falls to 1 mislabeled specimen per 1,000, but median collection delay rises from 3 to 11 minutes during printer downtime. | Q1. Which PDSA phase is represented by comparing the week-one results with baseline and reviewing the delays? Plan Do Study Q2. What should the team do next? Adopt the original process hospital-wide without addressing printer downtime Adapt the backup workflow and run another small cycle before wider spread Discard all results because the first test was not perfect Q3. Which measurement set best evaluates whether the revised process improves safety without creating a new problem? Number of staff attending the kickoff meeting only Printer purchase cost without any clinical process data Mislabeled specimens per 1,000 together with collection delays and workaround events ## Explanation Plan-Do-Study-Act is an iterative method for testing and refining a change. The team planned a measurable aim and small test, implemented it, and then compared the results with baseline while examining an unintended workflow problem. This is the Study phase. Because the mislabeling rate improved but printer downtime caused workarounds and delays, the team should use what it learned to adapt the backup process and run another small cycle before broad implementation. The team should track the outcome measure, such as mislabeled specimens per 1,000, together with balancing measures such as collection delays or unsafe workarounds. One favorable week is useful learning, not proof that a change should immediately become hospital-wide policy. ## In-depth explanation Trend to recognize The team defined a goal, tested a change on a small scale, and now compares results and unintended effects. That sequence has reached the Study phase. Next QI move Use the data to adapt the backup workflow, then test the revised process in another small PDSA cycle before wider spread. Measurement rule Pair the primary outcome measure with a balancing measure. Fewer labeling errors matter, but new delays and workarounds can reveal harm introduced by the change. Why the alternatives fail Immediate hospital-wide rollout skips learning from the downtime problem. Abandoning the test ignores the large improvement signal. Measuring only staff satisfaction does not show whether labeling safety improved. Source 1AHRQ Plan-Do-Study-Act Improvement Cycle 22026 NCLEX-RN Test Plan ## Clinical scenario Quality-improvement project A medical-surgical unit has a specimen mislabeling rate of 8 per 1,000 specimens. 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