• Carly Theiler, Joseph Arms, Gretchen Cutler, Ernest Krause, and David Burton.
• Children's Minnesota, Minneapolis, MN, USA; University of Iowa, Department of Emergency Medicine, IA, USA. Electronic address: carly-theiler@uiowa.edu.
• Am J Emerg Med. 2021 Mar 1; 41: 21-27.

ObjectiveReview pediatric electrocardiogram (ECG) result severity classification and describe the utilization of ECG testing, and rate of clinically significant results, in the pediatric emergency department (PED).MethodsThis was a review of patients ≤18 years who had an ECG performed in a tertiary children's hospital PED 2005-2017. Using established guidelines and expert consultation, ECG results were categorized: Class 0 = normal, Class I = mild abnormality (no cardiology follow-up), Class II = moderate abnormality (cardiology follow-up), Class III = severe abnormality (immediate intervention). Chi-square tests were used to examine differences between patients with clinically insignificant (Class 0/I) and clinically significant (Class II/III) results. Multivariable regression was used to examine factors associated with clinically significant results.Results16,147 unique PED encounters with ECG performed were included for analysis. The most common ECG indications were chest pain (32.5%), syncope (22.0%), arrhythmia (11.8%), toxicology/ingestion (9.4%), and seizure (5.7%). Overall, 12.7% (n = 2056) of ECGs had clinically significant (Class II/III) results, and only 2.0% (n = 325) had severe abnormality (Class III) that would require immediate intervention or cardiologist input. Factors associated with increased odds of clinically significant ECG were age ≤ 1 year (OR = 1.20, 95% CI: 1.02-1.41), male (OR = 1.33, 95% CI: 1.20-1.46), and indications of arrhythmia (OR = 1.84, 95% CI: 1.59-2.13), cardiac (OR = 2.57, 95% CI: 1.99-3.31), blank indication (OR = 1.52, 95% CI: 1.17-1.98), and electrolyte abnormality (OR = 1.42, 95% CI: 1.03-1.95).ConclusionsIn this study, we provided a valuable review of ECG result severity classification in the pediatric population. We found that chest pain and syncope represented over half of all ECGs performed. We found that clinically significant results are rare in the pediatric population at 12.7% of all ECGs performed, and very few (2.0%) have severe abnormalities that would require immediate intervention. Those with increased odds of a clinically significant ECG include young patients ≤1 year of age, male patients, and certain ECG indications.Copyright © 2020 Elsevier Inc. All rights reserved.

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