Weather temperatures relationship with cardiovascular diseases



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Weather temperatures relationship with cardiovascular diseases

NASA, with a short video of 26 seconds, shows the evolution of global warming over the last 131 years, highlighting a surge in temperatures especially in the last two decades. An increase in the global average temperature would lead to areas in the mid-latitudes more subject to desertification phenomena, also by virtue of the prolonged absence of atmospheric precipitation due to drought and heat waves.

The US Navy believes that although there are significant uncertainties, the current scientific consensus is such that the Arctic will be almost completely ice-free in the summer starting one year between 2030 and 2040. It therefore believes that it may be necessary increase its operational capabilities in that region.

The effects are also seen on health, especially that of the cardiovascular system. The study: Weather temperature and the incidence of hospitalization for cardiovascular diseases in an aging society, published on the Scientific reports, said: "Weather temperatures affect the incidence of cardiovascular diseases (CVD), but there is limited information on whether CVD hospitalizations are affected by changes in weather temperatures in a super-aging society.

Weather temperatures relationship with cardiovascular diseases

We aimed to examine the association of diurnal weather temperature changes with CVD hospitalizations. We included 1,067,171 consecutive patients who were admitted to acute-care hospitals in Japan between April 1, 2012 and March 31, 2015.

The primary outcome was the number of CVD hospitalizations per day. The diurnal weather temperature range (DTR) was defined as the minimum weather temperature subtracted from the maximum weather temperature on the day before hospitalization.

Multilevel mixed-effects linear regression models were used to estimate the association of DTR with cardiovascular hospitalizations after adjusting for weather, hospital, and patient demographics. An increased DTR was associated with a higher number of CVD hospitalizations (coefficient, 4.540 [4.310-4.765] / ° C change, p <0.001), with greater effects in those aged 75-89 (p <0.001) and ≥ 90 years ( p = 0.006) than among those aged ≤ 64 years; however, there were no sex-related differences (p = 0.166).

Greater intraday weather temperature changes are associated with an increased number of CVD hospitalizations in the super-aging society of Japan, with a greater effect in older individuals.