Quality improvement methodology using Plan-Do-Study-Act (PDSA) cycles involves:

A) One-time changes

B) Iterative testing of small changes, measuring results, and refining interventions based on data

C) Only studying problems

D) Management-only decisions

Explanation

PDSA: Plan (identify change), Do (implement small test), Study (analyze results), Act (adopt/adapt/abandon). Iterative cycles allow rapid improvement with minimal risk. Core quality improvement method.

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