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Journal of The Korean Society of Emergency Medicine 2012;23(5): 687-695. |
Characteristics of Summer Heatwave Victims of Emergency Department Visits in Korea During 2011: Results from the Surveillance System of Heat-related Illness Based on Emergency Department |
Soo Nam Jo, Si Heon Kim, Sun Ja Kim, Sung Hoon Jung, Yunhwan Lee, Wonwoong Na, Jae Yeon Jang, Kyoung Jun Song |
1Korea Centers for Disease Control & Prevention, Chungbuk, Korea. 2Ministry of Health & Welfare, Suwon, Korea. 3Department Preventive Medicine and Public Health, Ajou University School of Medicine, Suwon, Korea. free5293@gmail.com 4Institute on Aging, Ajou University Medical Center, Suwon, Korea. 5Department of Emergency Medicine, Seoul National University Boramae Medical Center, Seoul, Korea. |
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ABSTRACT |
PURPOSE: The aim of this study was to examine characteristics of health-related victims identified through the Surveillance System of Heat-related Illness (SSHI) based on emergency department (ED) visits.
METHODS: Between July 1 and September 3 of 2011, 443 heat-related patients were reported by 396 of the 461 EDs participating in the SSHI. Heat-related illness included heat (sun) stroke, heat cramp, heat syncope, and heat exhaustion. A hot day was defined as a day above 30degrees C of daily maximum temperature in locations of provincial and metropolitan government offices. We used chi square test for identification of risk factors associated with Heat-related illness in the workplace and heat-related illness heat (sun) stroke.
RESULTS: Heatwave, defined as lasting three or more hot days, occurred three times during this period. The daily average number of heat-related patients reported during the heatwave period was 15.7 per day, more than four times the usual rate. The daily maximum temperature showed positive correlation with occurrence of heat-related illness. Heat exhaustion was the most frequent cause (46.0%), with approximately 70% of all cases occurring between noon and 6 p.m. The number of people suffering from heat-related illness while outdoors was three times greater than that of those who experienced it indoors. Work-related occurrence comprised 56.7% of all cases. All six deaths occurred during the heatwave period and were work-related.
CONCLUSION: Working conditions, outdoor activities, and old age may be associated with health-related illnesses. A surveillance system that monitors emergency room visits may be useful in assessment of adverse health effects of summer heatwaves. |
Key words:
Climate change, Heat wave, Heat stroke, Emergency department |
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