• Paul M Patek, Dalia Owda, and MenochMargaret J AMJA.
• From the Division of Pediatric Emergency Medicine, Beaumont Hospital, Royal Oak, MI.
• Pediatr Emerg Care. 2022 Sep 1; 38 (9): e1529e1532e1529-e1532.

ObjectivesAnaphylaxis is a serious allergic reaction that has the potential to be life-threatening if not recognized and managed rapidly. Several regional studies have shown increased incidence of anaphylaxis over the past decade. The objectives of this study were to determine rates of pediatric anaphylaxis in southeast Michigan between January 1, 2010, and December 31, 2019, and to describe the epidemiology of pediatric patients presenting to emergency centers in southeast Michigan with anaphylaxis.MethodsWe performed a retrospective chart review of all pediatric patients aged 0 to 17 years presenting to 2 large emergency centers from 2010 to 2019 with a diagnosis of anaphylaxis using International Classification of Diseases , Ninth and Tenth Revision , Clinical Modification codes. Epidemiological and visit data, including length of stay, use of intravenous medication, and emergency severity index, were extracted and analyzed. Pediatric anaphylaxis rates were calculated based on detected anaphylaxis cases divided by total pediatric emergency department visits to the 2 emergency centers. A Poisson regression model was used to predict rates of anaphylaxis per 100,000 emergency department visits.ResultsOne thousand three hundred ninety-one pediatric visits for anaphylaxis were identified during a period between January 1, 2010, and December 31, 2019. There was a significant rate of increase in pediatric anaphylaxis cases over the 10-year study period at both suburban emergency centers, with an annual increase of 21% and 13%. There was no significant change in trends in demographic factors. Most anaphylaxis cases were young, White males with private insurance. Most children did not receive intravenous medications (77%). The median length of stay increased by 1.5 hours over the study period and 92% of patients were discharged home.ConclusionsPediatric emergency center visits and length of stay for anaphylaxis in southeast Michigan have markedly increased over the past 10 years.Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.

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