All children diagnosed with CI were identified as potential candidates to trial the pain assessment tools regardless of age, diagnosis. OR gender within the first 24 hours of admission. Patients were selected daily following discussions with the unit charge nurses, unit PRNs. and any interested staff nurses. To capture both acute and episodic pain experiences in each site, the QI project procedures varied slightly. For example, patients undergo¬ing tonsillectomy/adenoidectomy are expected to experience acute pain within the first 1- 2 days of hospitalization. Therefore, patients from the postsurgical units remained in the QI project for 24 hours during postoperative Day 1 -2 because pain was expected during this time frame. Patients who are beyond the acute postoperative phase but require Optimizing Pain Assessment Through Quality Improvement Process