• Pediatric emergency care · May 2021

    Radiographic Pneumonia in Febrile Infants 60 Days and Younger.

    • Todd A Florin, Octavio Ramilo, John D Hoyle, David M Jaffe, Leah Tzimenatos, Shireen M Atabaki, Daniel M Cohen, John M VanBuren, Prashant Mahajan, Nathan Kuppermann, and Febrile Infant Working Group of the Pediatric Emergency Care Applied Research Network (PECARN).
    • From the Division of Emergency Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago & Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL.
    • Pediatr Emerg Care. 2021 May 1; 37 (5): e221e226e221-e226.

    ObjectiveFew prospective studies have assessed the occurrence of radiographic pneumonia in young febrile infants. We analyzed factors associated with radiographic pneumonias in febrile infants 60 days or younger evaluated in pediatric emergency departments.Study DesignWe conducted a planned secondary analysis of a prospective cohort study within 26 emergency departments in a pediatric research network from 2008 to 2013. Febrile (≥38°C) infants 60 days or younger who received chest radiographs were included. Chest radiograph reports were categorized as "no," "possible," or "definite" pneumonia. We compared demographics, Yale Observation Scale scores (>10 implying ill appearance), laboratory markers, blood cultures, and viral testing among groups.ResultsOf 4778 infants, 1724 (36.1%) had chest radiographs performed; 2.7% (n = 46) had definite pneumonias, and 3.9% (n = 67) had possible pneumonias. Patients with definite (13/46 [28.3%]) or possible (15/67 [22.7%]) pneumonias more frequently had Yale Observation Scale score >10 compared with those without pneumonias (210/1611 [13.2%], P = 0.002) in univariable and multivariable analyses. Median white blood cell count (WBC), absolute neutrophil count (ANC), and procalcitonin (PCT) were higher in the definite (WBC, 11.5 [interquartile range, 9.8-15.5]; ANC, 5.0 [3.2-7.6]; PCT, 0.4 [0.2-2.1]) versus no pneumonia (WBC, 10.0 [7.6-13.3]; ANC, 3.4 [2.1-5.4]; PCT, 0.2 [0.2-0.3]; WBC, P = 0.006; ANC, P = 0.002; PCT, P = 0.046) groups, but of unclear clinical significance. There were no cases of bacteremia in the definite pneumonia group. Viral infections were more frequent in groups with definite (25/38 [65.8%]) and possible (28/55 [50.9%]) pneumonias than no pneumonias (534/1185 [45.1%], P = 0.02).ConclusionsRadiographic pneumonias were uncommon, often had viruses detected, and were associated with ill appearance, but few other predictors, in febrile infants 60 days or younger.Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.

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