Efeitos da temperatura na mortalidade por doenças cardiovasculares e impactos futuros segundo cenários de mudanças climáticas no Brasil.

• Autor(a) principal: Silveira, Ismael Henrique da
• Data de Publicação: 2019
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/4481
• topic: Climate change; Temperature; Cardiovascular diseases; Mortality; Time series studies; Environmental epidemiology; Mudança climática; Temperatura ambiente; Doenças cardiovasculares; Mortalidade; Estudos de séries temporais; Epidemiologia ambiental; CNPQ::CIENCIAS DA SAUDE::SAUDE COLETIVA

Cardiovascular diseases (CVD) are the leading cause of death in Brazil and worldwide. Its relationship with ambient temperature has been evidenced by epidemiological studies. In the context of climate change, according to warming projections and the greater frequency of extreme events, an increase in impacts of climate in health, such as the rise in CVD mortality attributed to temperature, is expected. Brazil is located in one of the regions in the world that has experienced the most warming, and the projections indicate increases of up to 8-9°C, under scenario of no mitigation. However, there is little evidence on the effects of temperature on CVD mortality and the impacts associated to climate change in Brazil and Latin America. The objective of this work was to investigate the effect of temperature on CVD mortality in the present and to estimate the future impacts of temperature on CVD mortality under different climate change scenarios in Brazil. The effects of temperature on CVD mortality in Brazilian capitals were estimated and pooled for the whole country and its regions using time series studies. Daily data on CVD deaths, average temperature, and relative humidity were included during the study period, which ranged from 2000 to 2015. The analysis used generalized linear models, combined with distributed lag non-linear models, with 21 days of lag. The heterogeneity of effects among cities, according to geographic, socioeconomic, demographic and infrastructural characteristics, was investigated through meta-regression models. The projection of the impacts of climate change on CVD mortality by 2100 was estimated in terms of deaths attributable to cold and heat, with temperature series simulated under RCP4.5 and RCP8.5 using two regionalized climate models (Eta- HadGEM2-ES and Eta-MIROC5). The results showed the effect of ambient temperature on CVD mortality in most cities, and the pooled effect for all Brazil and the Midwest, North, Southeast, and South regions. the effects were more intense among the cities with greater thermal amplitude. In relation to the impacts of climate change, there was a tendency to reduce deaths attributable to cold, in all Brazilian cities, and to increase total deaths and those attributable to heat, in most analyzed cities. This increase is more intense under the RCP8.5 scenario, which does not consider any mitigation strategy for CO2 emissions. The findings of this study are important to provide information for the communication of the risks aiming at the promotion of health policies and the planning of strategies for adaptation to climate change.