Association between climate variables (cold and hot weathers,humidity, atmospheric pressures) with out-of-hospital cardiac arrests in Rasht,Iran |
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| Institution: | 1. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China;2. The National Center for Chronic and Noncommunicable Disease Control and Prevention, Beijing 100050, China;3. Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing 100005, China;4. Department of Health, Ethics & Society, CAPHRI School of Public Health and Primary Care, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands;5. Centre for Infectious Diseases, Epidemiology and Surveillance, National Institute for Public Health and the Environment, Bilthoven, The Netherlands;6. State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China;1. Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, United States;2. Departments of Neurology, Columbia University Medical School and Epidemiology, Columbia University Mailman School of Public Health, New York, NY, United States;3. Department of Statistics, Colorado State University, United States;4. Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States;1. Department of Epidemiology, School of Public Health, Shandong University, Jinan City, Shandong Province, PR China;2. Department of Dentistry, Affiliated Hospital, Weifang Medical University, Weifang 261031, Shandong Province, PR China;3. State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China;4. Center for Climate Change and Health, School of Public Health, Shandong University, Jinan City, Shandong Province, PR China;1. Department of Medical - Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran;2. Department of Medical-Surgical Nursing, Nursing and Midwifery School, Guilan University of Medical Sciences, Rasht, Iran;3. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran;4. School of Medicine, Guilan University of Medical Sciences, Rasht, Iran;5. Ardabile Social Security Organization, Sabalan Hospital, Ardabile, Iran;1. School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, & Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, China;2. Research Institute for the Changing Global Environment and Fudan Tyndall Centre, Fudan University, Shanghai, China |
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| Abstract: | Climate change is one of the most important concerns for public health that affects communities and is a threat to human health. Few cross-sectional studies investigated the effects of extreme temperature as a risk factor on the cardiovascular system and the Out-of-Hospital Cardiac Arrests (OHCA).The current study aims to investigate the association between climate variables (cold and hot weathers, humidity, atmospheric pressures) with Out-of-Hospital Cardiac Arrests in Rasht, Iran.This is an ecological time-series study, which investigated 392 patients with OHCA that were hospitalized in Dr. Heshmat Medical center of Rasht city in a 3-years period. Data on meteorological variables were obtained from the General Meteorological Department of Guilan Province. Information regarding the number of cardiac arrest admissions was obtained from the sole specialized cardiac hospital of Rasht. Data were analyzed using R software.Hot weather decreases the number of cardiac attacks on the same day (lag 0), while the cold weather (relative risk (RR) = 1.408; confidence interval (CI): 1.014–1.955) increases the number of OHCA cases and unsuccessful cardiopulmonary resuscitation (CPRs). Low humidity (RR = 1.76; CI: 1.006–3.79) is associated with increased unsuccessful CPRs. High atmospheric pressures (RR = 1.166; CI: 1.001 to 1.787) are also associated with an increased number of cardiac arrest admissions. For women, men, and those aged >65 years of old, exposure with severe cold (RR = 1.335; CI: 1.014–1.758) and hot weathers, respectively, increases and decreases the number of cardiac arrest admissions.Cold weather has immediate impacts on the incidence of OHCA cases and unsuccessful CPRs. Decreasing humidity also increases the number of and decreases the success rate of CPRs. Increasing the awareness of patients with cardiovascular diseases (CVDs as well as improving the preparedness of emergency care teams can decrease the impacts of climate variables. |
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| Keywords: | Out of hospital cardiac arrest Extreme weather Climate changes Mortality |
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