Department of Environmental and Biological Sciences, University of Eastern Finland, 70211 Kuopio, Finland.
Department of Health Security, Finnish Institute for Health and Welfare (THL), 70701 Kuopio, Finland.
Int J Environ Res Public Health. 2020 Oct 28;17(21):7892. doi: 10.3390/ijerph17217892.
There is a lack of knowledge concerning the effects of ambient heat exposure on morbidity in Northern Europe. Therefore, this study aimed to evaluate the relationships of daily summertime temperature and heatwaves with cardiorespiratory hospital admissions in the Helsinki metropolitan area, Finland. : Time series models adjusted for potential confounders, such as air pollution, were used to investigate the associations of daily temperature and heatwaves with cause-specific cardiorespiratory hospital admissions during summer months of 2001-2017. Daily number of hospitalizations was obtained from the national hospital discharge register and weather information from the Finnish Meteorological Institute. : Increased daily temperature was associated with a decreased risk of total respiratory hospital admissions and asthma. Heatwave days were associated with 20.5% (95% CI: 6.9, 35.9) increased risk of pneumonia admissions and during long or intense heatwaves also with total respiratory admissions in the oldest age group (≥75 years). There were also suggestive positive associations between heatwave days and admissions due to myocardial infarction and cerebrovascular diseases. In contrast, risk of arrhythmia admissions decreased 20.8% (95% CI: 8.0, 31.8) during heatwaves. : Heatwaves, rather than single hot days, are a health threat affecting morbidity even in a Northern climate.
关于环境热暴露对北欧发病率的影响，人们知之甚少。因此，本研究旨在评估芬兰赫尔辛基大都市区夏季日最高温度和热浪与心肺疾病住院的关系。研究采用时间序列模型，调整了潜在混杂因素，如空气污染，以调查夏季每日温度和热浪与特定心肺疾病住院的关系。住院人数来自国家住院登记处，天气信息来自芬兰气象研究所。研究结果表明，每日温度升高与总呼吸系统疾病住院风险降低和哮喘住院风险降低有关。热浪日与肺炎住院风险增加 20.5%（95%CI：6.9，35.9）有关，在年龄最大的组（≥75 岁），长或强热浪日也与总呼吸系统疾病住院有关。热浪日与心肌梗死和脑血管疾病住院也存在明显的正相关关系。相反，心律失常住院风险在热浪期间降低了 20.8%（95%CI：8.0，31.8）。研究结果表明，热浪，而不是单个炎热的日子，是一种健康威胁，即使在北欧气候下，也会影响发病率。
