Chest pain is a common symptom in pediatric emergency department. The causes are mostly benign without any sign on chest x-ray (CXR). However, CXR is one of the most ordered tests in this situation. Our main objective was to assess the current management of CXR by physicians in this context, according to the algorithm proposed by the French Society of Pediatrics (FSP).

We conducted a retrospective study in two French pediatric emergency departments. We reviewed the medical records of children who presented with chest pain between 2018, July 1rst to 2021, July 31th. We collected data from history and clinical examination. The prescription of CXR and its interpretation were collected.

Overall, 599 children were enrolled. The algorithm was followed in 57,1 % of cases, and 8,2 % of abnormal CXR were noted. On univariate analysis, medical history with a significant OR greater than 2 included cardiological history (as defined by FSP), neoplasia, pneumonia and sickle cell disease. Right lateralized pain, pain that worsens with respiration, fever and cough were also symptoms significantly associated with an abnormal CXR result. On physical finding, tachycardia, tachypnea, abnormal cardiac and pulmonary clinical examination (as defined by the FSP) were significantly associated with pathological CXR. However, the multivariate logistic regression model could not be carried out due to too many significant variables in univariate analysis, and too few number of abnormal CXR reported.

CXR remains the cornerstone of chest pain management in pediatric emergencies, even though the rate of abnormal CXR appears low. The appropriateness of CXR prescribing can be improved by guidelines focusing on the clinical etiologies of chest pain visible on CXR. A similar prospective study may identify risk factors for pathological CXR and clarify the decision tree for the indication of CXR in chest pain.