BackgroundCentral to palliative care is the early assessment and treatment of pain, whether physical, psychosocial, or spiritual. Nonverbal palliative care patients are at risk for inadequate pain assessment leading to prolonged suffering. AimsThe purpose of this project was to implement and evaluate an evidence-based pain assessment tool for nonverbal palliative care patients. DesignThe Iowa Model Revised: Evidence-Based Practice to Promote Excellence in Healthcare and the Implementation Strategies for Evidence-Based Practice Guide provided the guiding frameworks. SettingsOn a six-bed adult inpatient Palliative Care Unit (PCU). Participants/SubjectsNonverbal palliative care patients. MethodsEvidence supported use of the Multidimensional Objective Pain Assessment Tool (MOPAT) for nonverbal patients receiving palliative care. During an eight-week pilot, nurses recorded pain assessments on a paper form and trended pain scores over a 24-hour period. Evaluation included knowledge, attitudes, and behaviors pre- and post-pilot and was subsequently used in a Precision Implementation Approach to promote adoption. ResultsNurses’ attitudes toward palliative care pain assessment improved in all items on the evaluation tools. Pain was assessed using MOPAT for 74% of nonverbal palliative care patients and 88% of patients had linked pain interventions to MOPAT scores. ConclusionsMOPAT is the only valid evidence-based pain assessment tool for nonverbal patients receiving palliative care. This project led to successful adoption of the MOPAT within the PCU.