Alonso-Cadenas, Jose AntonioCalderon Checa, Rosa MariaGarcia-Loygorri, Clara FerreroHidalgo, Isabel DuranPerez Garcia, Maria JoseGomez, Pablo DelgadoGarcia, Raquel JimenezGrp Trabajo Traumatismo2023-05-032023-05-032023-02-011695-4033http://hdl.handle.net/10668/21969Introduction: In the assessment of infants younger than 3 months with minor traumatic head injury (MHI), it is essential to adapt the indication of imaging tests. The Pediatric Head Injury/Trauma Algorithm (PECARN) clinical prediction rule is the most widely used to guide clinical decision making.Objectives: To analyse the variability in the performance of imaging tests in infants under 3 months with MHI in paediatric emergency departments and the adherence of each hospital to the recommendations of the PECARN rule. Population and methods: We conducted a prospective multicentre observational study in 13 paediatric emergency departments in Spain between May 2017 and November 2020.Results: Of 21,981 children with MHI, 366 (1.7%) were aged less than 3 months; 195 (53.3%) underwent neuroimaging, with performance of CT scans in 37 (10.1%; interhospital range, 0%-40.0%), skull X-rays in 162 (44.3%; range, 0%-100%) and transfontanellar ultrasound scans in 22 (6.0%; range, 0%-24.0%). The established recommendations were followed in 25.6% (10/39) of infants classified as high-risk based on PECARN criteria (range, 0%-100%); 37.1% (36/97) clas-sified as intermediate-risk (range, 0%-100%) and 57.4% (132/230) classified as low-risk (range, 0%-100%).Conclusion: We found substantial variability and low adherence to the PECARN recommenda-tions in the performance of imaging tests in infants aged less than 3 months with MHI in Spanish paediatric emergency departments s, mainly due to an excessive use of skull X-rays.(c) 2022 Asociacion Espanola de Pediatria. Published by Elsevier Espana, S.L.U. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Paediatric emergency departmentMinor head injuryInfantsChildren youngerTraumaVariability in the management of infants under 3 months with minor head injury in paediatric emergency departmentsresearch articleopen access10.1016/j.anpedi.2022.10.0091695-9531https://doi.org/10.1016/j.anpedi.2022.10.009933064500001