Fig. 1From: Evaluation of early postoperative intravenous opioid rescue as a novel quality measure in patients who receive thoracic epidural analgesia: a retrospective cohort analysis and prospective performance improvement interventionStudy flow diagram: Flow diagram of the retrospective analysis of Thoracic Epidural Placements over a three-year period (Phase 1). Outcomes of this study were used to plan the performance improvement study (Phase 2), where pre and post intervention monthly rates of PACU-OpResc were comparedBack to article page