Objectives: Blunt trauma in pediatric patients accounts for a significant proportion of pediatric death from traumatic injury. Currently, there are no clinical decision-making tools available to guide imaging choice in the evaluation of pediatric patients with blunt thoracic trauma (BTT). This study aimed to analyze the rates of missed major intrathoracic injuries on chest x-ray (CXR) and identify clinical risk factors associated with major intrathoracic injuries to formulate a clinical decision-making tool for computed tomography (CT) use in pediatric patients with BTT.
Methods: We performed a retrospective single-center study using an institutional trauma database of pediatric patients. Inclusion criteria included age, blunt trauma, and patients who received a CXR and thoracic CT within 24 hours of presentation. Thoracic CT findings were graded as major, minor, or none, and comparison CXR was used to determine the rate of missed thoracic injuries. Eighty-four patient variables were then collected, and clinically relevant variables associated with major intrathoracic injuries were placed in a logistic regression model to determine the best predictors of major injury in pediatric BTT patients.
Results: A total of 180 patients (48.3%) had CXR that missed an injury that was seen on thoracic CT. In our cohort, 20 patients (5.4%) had major injuries that were missed on CXR. Characteristics correlating with major thoracic injuries were older age (odds ratio [OR], 1.125; 95% confidence interval [CI], 1.015-1.247), chest pain (OR, 4.907; 95% CI, 2.173-11.083), abnormal chest auscultation (OR, 3.564; 95% CI, 1.406-9.035), and tachycardia (OR, 2.876; 95% CI, 1.256-6.586). Using these 4 variables, receiver operating characteristic analysis revealed an area under the curve of 0.7903.
Conclusions: Pediatric BTT patients older than 15 years with tachycardia, chest pain, or abnormal chest auscultation are at increased risk for major intrathoracic injuries and may benefit from thoracic CT.
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