• Neeraj Chhabra, Renee P Gimbar, Lisa M Walla, and Trevonne M Thompson.
• Department of Emergency Medicine, University of Illinois at Chicago, Chicago, Illinois.
• J Emerg Med. 2018 Apr 1; 54 (4): 435-439.

BackgroundElectronic dance music (EDM) festivals are increasingly common and psychoactive substance use is prevalent. Although prehospital care can obviate the transfer of many attendees to health care facilities (HCFs), little is known regarding the emergency department (ED) burden of patients presenting from EDM festivals.ObjectivesThis study describes the patient volume, length of stay (LOS), and presenting complaints of patients from a 3-day EDM festival in close proximity to an area ED.MethodsMedical charts of patients presenting to one HCF from an EDM festival were reviewed for substances used, ED LOS, and sedative medications administered. Additionally, preparedness techniques are described.ResultsOver the 3-day festival, 28 patients presented to the ED (median age 21 years; range 18-29 years). Twenty-five had complaints related to substance use including ethanol (n = 18), "molly" or "ecstasy" (n = 13), and marijuana (n = 8). Three patients required intensive care or step-down unit admission for endotracheal intubation, rhabdomyolysis, and protracted altered mental status. The median LOS for discharged patients was 265 min (interquartile range 210-347 min). Eleven patients required the use of sedative medications, with cumulative doses of 42 mg of lorazepam and 350 mg of ketamine. All patients presented within the hours of 5:00 pm and 2:15 am.ConclusionThe majority of ED visits from an EDM festival were related to substance use. ED arrival times clustered during the evening and were associated with prolonged LOS. Few patients required hospital admission, but admitted patients required high levels of care. HCFs should use these data as a guide in planning for future events.Copyright © 2017 Elsevier Inc. All rights reserved.

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