Response to a National Issue: Moving Beyond "Back to Sleep" at Three Hospitals.

Purpose: To measure changes in registered nurse (RN) knowledge/beliefs and practices, parents' recall of infant safe sleep (ISS) teaching, and inpatient infant sleep environments and safety after implementing an ISS initiative.

Design And Methods: This longitudinal quasi-experimental study took place in three hospitals in the United States. An existing infant safe sleep tool was revised and updated to align with current recommendations on sleep environments.