Correlation between the number of patients suffering from heat stroke and climate temperature and humidity in Hainan, 2010-2019.

Objective To explore the correlation between the number of people suffering from heat stroke and the main climatic factors in Hainan province. Methods The complete cases of heat stroke were collected from the hospitals located in eight regions (Haikou, Sanya, Danzhou, Wenchang, Wanning, Qiongzhong, Baisha, Dongfang, etc.) in Hainan Province from 2010 to 2019. In the same period, we collected the average temperature and relative humidity recorded by meteorological monitoring points (Haikou, Sanya, Danzhou, Qionghai, Lingshui, Dongfang, Qiongzhong) in Hainan Province from 2010 to 2019 from the National Greenhouse Data System website. A total of 177 patients with heat stroke who met the data collection requirements and the average temperature and relative humidity in Hainan Province were retrospectively analyzed. Results The number of patients with heat stroke in Hainan Province from 2010 to 2019 showed an obvious upward trend compared with previous years, and the number of patients was concentrated in May to July, with the largest number in June. From 2010 to 2019 in Hainan province, there was a significant positive correlation between the number of residents suffering from heat stroke and their monthly mean temperature (r=0.797, P<0.05) and annual mean temperature (r=0.801, P<0.05); there was a significant negative correlation between the number of residents suffering from heat stroke and their monthly mean relative humidity (r=-0.650, P<0.05); there was no significant correlation between the number of residents suffering from heat stroke and their annual mean relative humidity (r=-0.172, P>0.05). Conclusion In recent years, the trend of heat stroke in Hainan Province has been fluctuating and rising, and it has obvious characteristics of "almost all year round; the higher the monthly average temperature is, the lower the monthly average relative humidity is, and the more the number of patients is", we should pay attention to it and do the corresponding protection. As heat stroke usually involves multiple systems of the whole body, its mortality is high and its harm is great, therefore, strengthening meteorological monitoring, strengthening the publicity of heat stroke prevention and control, and guiding residents in Hainan Province to carry out heat acclimatization can prevent or reduce the occurrence of heat stroke. [ABSTRACT FROM AUTHOR]