• Torben Ostendorf, Michael Bernhard, Thomas Hartwig, Markus Voigt, Thomas Keller, Michael Stumvoll, and André Gries.
• Emergency Department, University of Leipzig, Leipzig, Germany. Electronic address: torben.ostendorf@medizin.uni-leipzig.de.
• Am J Emerg Med. 2020 Aug 1; 38 (8): 1604-1610.

IntroductionStudies suggest that there is an association between weather and cardiovascular disease (CVD) related visits in emergency departments (ED).MethodsWe used a case-crossover study design to investigate the association between ED visits for CVD and changes in temperature, atmospheric pressure, and relative humidity. Patient and weather data from the years 2014 and 2015 were used to investigate relevance of changes associated with weather in the frequency of CVD-related ED visits. They were correlated to overall variability of the visits adjusted to day of the week.ResultsIn the study period 20,558 ED visits were related to CVD (mean per day: 28.3). Significant associations were identified for all three variables (temperature, atmospheric pressure, and relative humidity). Significant odds ratio (OR) was found for a large decrease in temperature 1.29 (95%-CI, 1.1-1.52). However, the related effects, although significant, were small compared to overall variability of visits.ConclusionWe found an association between rapid weather changes on the day before ED admission and ED visits due to CVD. In conclusion, a drop in temperature and an increase or decrease in atmospheric pressure and relative humidity are associated with a slight increase in CVD admissions. However, the observed significant effects seem to be too small to draw any conclusions in terms of ED capacity due to weather changes.Copyright © 2019 Elsevier Inc. All rights reserved.

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