BACKGROUND
The Pediatric Emergency Care Applied Research Network (PECARN) clinical prediction rules identify children at low risk of clinically important traumatic brain injury in whom computed tomography (CT) neuro-imaging can safely be avoided. Since publication in 2009, these rules have been externally validated and are widely used in the Emergency Department (ED) assessment of children with acute head trauma.
OBJECTIVES
This study sought to determine if the proportion of children receiving CT-imaging in US EDs following head trauma has decreased following the development of PECARN rules.
DESIGN/METHODS
This study was a cross-sectional study using the National Hospital Ambulatory Care Survey (NHAMCS) database from 2007–2014. NHAMCS collects data on approximately 30,000 nationally representative visits annually to 300 randomly selected U.S EDs. We included all children <18 years old presenting with a chief complaint or discharge diagnosis of head injury. We collected data on patient demographics, reason for ED visit, discharge diagnosis, patient disposition, and use of head CT. Multivariable logistic regression was used to identify characteristics of CT use, with appropriate weighting to account for the survey methodology. The primary outcome was proportion of children receiving a head CT before and after 2009.
RESULTS
There were 55,253 paediatric visits during the 8-year study period. Among these, 2,783 (5.3% 95%CI 5.0%-5.6%) met inclusion criteria, representing 12,417,725 paediatric head trauma visits. Median patient age was 6 years (IQR 2–13 years), 62% were male, and a majority were evaluated in non-teaching and non-paediatric hospitals (88% and 90%, respectively). Overall, 32% (95%CI 29%-35%) underwent CT neuroimaging. There was no significant difference in CT use after 2009 (31% after vs. 33% before, p=0.41). Multivariate analysis similarly demonstrated no difference after adjustment for patient age, gender, race, insurance provider, paediatric or teaching hospital, admission status and triage acuity (AOR 1.02 after vs. before, 95%CI 0.79–1.32, p=0.85). Factors associated with increased CT use were age ≥2 years (AOR 1.4, 95%CI 1.1–1.9, p=0.02), admission (AOR 5.3, 95%CI 2.2–12.4, p<0.001), highest triage acuity (AOR 7.3, 95%CI 3.5–15.3, p<0.001) and presentation to a non-teaching (AOR 1.5, 95%CI 1.1–2.2, p=0.02) or non-paediatric (AOR 1.5, 95%CI 1.3–2.8, p<0.01) hospital.
CONCLUSION
The use of CT neuro-imaging did not decrease in the 5-year period following derivation of PECARN rules. Findings suggest an important need for quality improvement initiatives to ensure appropriate CT utilization among head injured children.
