Objective: To analyze the effect of an improvement project on the implementation of Basic Patient Safety Protocols in Brazilian public hospitals.
Method: This is an intervention study aimed at comparing measurements before-and-after the implementation of an improvement project in 35 public hospitals across three Brazilian regions, between July 2021 and September 2023. The intervention consisted of a set of activities to support the implementation of six Basic Patient Safety Protocols, with semimonthly collection of indicators.