Influence of weather on daily hospital admissions for acute myocardial infarction (from the Korea Acute Myocardial Infarction Registry)

• Published in: International journal of cardiology Vol. 144; no. 1; pp. 16 - 21
• Main Authors: Lee, Jang Hoon, Chae, Shung Chull, Yang, Dong Heon, Park, Hun Sik, Cho, Yongkeun, Jun, Jae-Eun, Park, Wee-Hyun, Kam, Sin, Lee, Won Kee, Kim, Young Jo, Kim, Kee Sik, Hur, Seung Ho, Jeong, Myung Ho
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 24.09.2010; Elsevier
• Subjects: Acute myocardial infarction; Aged; Biological and medical sciences; Cardiology. Vascular system; Cardiovascular; Coronary heart disease; Female; Heart; Hospitalization - trends; Humans; Korea - epidemiology; Male; Medical sciences; Meteorological factors; Myocardial Infarction - epidemiology; Myocardial Infarction - therapy; Myocarditis. Cardiomyopathies; Registries; Risk Factors; Seasonal variation; Weather; Asia; Korea; Acute myocardial infarction; Seasonal variation; Meteorological factors; Myocardial infarction; Hospital admission; Acute; Cardiovascular disease; Coronary heart disease; Epidemiology; Myocardial disease; Weather; Daily; Cardiology
• ISSN: 0167-5273; 1874-1754
• DOI: 10.1016/j.ijcard.2009.03.122

Abstract Background We investigated the association between meteorological parameters and hospital admissions for acute myocardial infarction (AMI) in a temperate and continental climate, Korea. Methods From the Korean AMI Registry, 2136 Koreans admitted for AMI in four university hospitals in Daegu city from November 2005 to October 2007 were included in this study. We calculated the incidences of AMI per season, per month, and per day-of-week. The meteorological parameters, including air temperature, relative humidity, wind speed, sunshine duration, and a thermo-hydrological index, were provided by the database of the Korea Meteorological Administration. Generalized additive Poisson models were used. Results Seasonal variations were noted for AMI, characterized by winter peak and summer trough ( p < 0.001). Monthly occurrence rate of AMI was highest in January and lowest in October ( p < 0.001). There were significant associations between hospital admissions and meteorological parameters including air temperature, relative humidity, and sunshine duration after controlling for effects of day-of-week, season, and holidays ( p < 0.05). These associations were stronger in females and the younger age (< 65 years) ( p < 0.01). Conclusions The incidence of AMI shows seasonal and monthly variations. Meteorological parameters have a significant influence on the occurrence of AMI, particularly in females and the younger age.