Abstract: PURPOSE: Pediatric cervical spine injury (PCSI) can result in devastating neurologic disability. While computed tomography (CT) imaging is both sensitive and specific in detecting clinically significant injuries, indiscriminate utilization can lead to excessive ionizing radiation exposure. A routine institutional audit revealed CTs were inappropriately obtained 54% of the time. This study evaluates the effects of an updated protocol to reduce radiation exposure in pediatric trauma patients. METHODS: Data were retrospectively analyzed from a pediatric level 1 trauma center from 2021 to 2022. The data were divided into two cohorts, pre-implementation (2021) and post-implementation (2022). Inclusion criteria were patients 0-14 years old with a Glasgow Coma Scale (GCS) ranging 9-15. Outside-hospital transfers were excluded. The primary study endpoints were guideline compliance and CT utilization. RESULTS: A total of 82 subjects were enrolled in this study. In 2021, there were 38 subjects (female/male 15/23, mean age 5.9 years old) with an average GCS of 13.6. In 2022, there were 44 subjects (female/male 19/25, mean age 5.2 years old) with an average GCS of 14.0. In 2021, the overall protocol adherence rate was 81.6%, and post-implementation in 2022, compliance was 93.2% (p = 0.109). Following implementation, the rate of inappropriate (protocol non-adherent CT) use decreased from 58.6 to 6.8% (p
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