Heat-Related Illnesses Transported by United States Emergency Medical Services

<i>Background and objectives:</i> Heat-related illness (HRI) can have significant morbidity and mortality consequences. Research has predominately focused on HRI in the emergency department, yet health care leading up to hospital arrival can impact patient outcomes. Therefore, the purpos...

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Main Authors: Susan Yeargin, Rebecca Hirschhorn, Andrew Grundstein
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Medicina
Subjects:
Online Access:https://www.mdpi.com/1010-660X/56/10/543
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author Susan Yeargin
Rebecca Hirschhorn
Andrew Grundstein
author_facet Susan Yeargin
Rebecca Hirschhorn
Andrew Grundstein
author_sort Susan Yeargin
collection DOAJ
description <i>Background and objectives:</i> Heat-related illness (HRI) can have significant morbidity and mortality consequences. Research has predominately focused on HRI in the emergency department, yet health care leading up to hospital arrival can impact patient outcomes. Therefore, the purpose of this study was to describe HRI in the prehospital setting. <i>Materials and Methods:</i> A descriptive epidemiological design was utilized using data from the National Emergency Medical Services (EMS) Information System for the 2017–2018 calendar years. Variables of interest in this study were: patient demographics (age, gender, race), US census division, urbanicity, dispatch timestamp, incident disposition, primary provider impression, and regional temperatures. <i>Results:</i> There were 34,814 HRIs reported. The majority of patients were white (<i>n</i> = 10,878, 55.6%), males (<i>n</i> = 21,818, 62.7%), and in the 25 to 64 age group (<i>n</i> = 18,489, 53.1%). Most HRIs occurred in the South Atlantic US census division (<i>n</i> = 11,732, 33.7%), during the summer (<i>n</i> = 23,873, 68.6%), and in urban areas (<i>n</i> = 27,541, 83.5%). The hottest regions were East South Central, West South Central, and South Atlantic, with peak summer temperatures in excess of 30.0 °C. In the spring and summer, most regions had near normal temperatures within 0.5 °C of the long-term mean. EMS dispatch was called for an HRI predominately between the hours of 11:00 a.m.–6:59 p.m. (<i>n</i> = 26,344, 75.7%), with the majority (27,601, 79.3%) of HRIs considered heat exhaustion and requiring the patient to be treated and transported (<i>n</i> = 24,531, 70.5%). <i>Conclusions:</i> All age groups experienced HRI but particularly those 25 to 64 years old. Targeted education to increase public awareness of HRI in this age group may be needed. Region temperature most likely explains why certain divisions of the US have higher HRI frequency. Afternoons in the summer are when EMS agencies should be prepared for HRI activations. EMS units in high HRI frequency US divisions may need to carry additional treatment interventions for all HRI types.
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spelling doaj.art-b743beba402b46f8ac088e1c9a9547472023-09-03T03:19:49ZengMDPI AGMedicina1010-660X2020-10-015654354310.3390/medicina56100543Heat-Related Illnesses Transported by United States Emergency Medical ServicesSusan Yeargin0Rebecca Hirschhorn1Andrew Grundstein2Department of Exercise Science, University of South Carolina, Columbia, SC 29208, USASchool of Kinesiology, Auburn University, Auburn, AL 36849, USADepartment of Geography, University of Georgia, Athens, GA 30602, USA<i>Background and objectives:</i> Heat-related illness (HRI) can have significant morbidity and mortality consequences. Research has predominately focused on HRI in the emergency department, yet health care leading up to hospital arrival can impact patient outcomes. Therefore, the purpose of this study was to describe HRI in the prehospital setting. <i>Materials and Methods:</i> A descriptive epidemiological design was utilized using data from the National Emergency Medical Services (EMS) Information System for the 2017–2018 calendar years. Variables of interest in this study were: patient demographics (age, gender, race), US census division, urbanicity, dispatch timestamp, incident disposition, primary provider impression, and regional temperatures. <i>Results:</i> There were 34,814 HRIs reported. The majority of patients were white (<i>n</i> = 10,878, 55.6%), males (<i>n</i> = 21,818, 62.7%), and in the 25 to 64 age group (<i>n</i> = 18,489, 53.1%). Most HRIs occurred in the South Atlantic US census division (<i>n</i> = 11,732, 33.7%), during the summer (<i>n</i> = 23,873, 68.6%), and in urban areas (<i>n</i> = 27,541, 83.5%). The hottest regions were East South Central, West South Central, and South Atlantic, with peak summer temperatures in excess of 30.0 °C. In the spring and summer, most regions had near normal temperatures within 0.5 °C of the long-term mean. EMS dispatch was called for an HRI predominately between the hours of 11:00 a.m.–6:59 p.m. (<i>n</i> = 26,344, 75.7%), with the majority (27,601, 79.3%) of HRIs considered heat exhaustion and requiring the patient to be treated and transported (<i>n</i> = 24,531, 70.5%). <i>Conclusions:</i> All age groups experienced HRI but particularly those 25 to 64 years old. Targeted education to increase public awareness of HRI in this age group may be needed. Region temperature most likely explains why certain divisions of the US have higher HRI frequency. Afternoons in the summer are when EMS agencies should be prepared for HRI activations. EMS units in high HRI frequency US divisions may need to carry additional treatment interventions for all HRI types.https://www.mdpi.com/1010-660X/56/10/543heat strokeheat exhaustionenvironmental conditions
spellingShingle Susan Yeargin
Rebecca Hirschhorn
Andrew Grundstein
Heat-Related Illnesses Transported by United States Emergency Medical Services
Medicina
heat stroke
heat exhaustion
environmental conditions
title Heat-Related Illnesses Transported by United States Emergency Medical Services
title_full Heat-Related Illnesses Transported by United States Emergency Medical Services
title_fullStr Heat-Related Illnesses Transported by United States Emergency Medical Services
title_full_unstemmed Heat-Related Illnesses Transported by United States Emergency Medical Services
title_short Heat-Related Illnesses Transported by United States Emergency Medical Services
title_sort heat related illnesses transported by united states emergency medical services
topic heat stroke
heat exhaustion
environmental conditions
url https://www.mdpi.com/1010-660X/56/10/543
work_keys_str_mv AT susanyeargin heatrelatedillnessestransportedbyunitedstatesemergencymedicalservices
AT rebeccahirschhorn heatrelatedillnessestransportedbyunitedstatesemergencymedicalservices
AT andrewgrundstein heatrelatedillnessestransportedbyunitedstatesemergencymedicalservices