Impact of seasonal and meteorological factors on the hospitalization of acute myocardial infarction in Guangzhou region
FANF Jia-ying1, DING Zan2
1. The People’s Hospital of Huadu District, Guangzhou, Guangdong 510800, China; 2. Central Hospital of Baoan District, the Fifth Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518102, China
Abstract：Objective To explore the seasonal distribution characteristics of hospitalization in patients with acute myocardial infarction (AMI) and their relationships with meteorological factors. Methods We collected the general information about 2,471 inpatients diagnosed as AMI from 2008 to 2017 in a third-grade class-A hospital in Guangzhou city. The numbers of AMI inpatients in different seasons were compared, and the relationships between meteorological factors and the number of AMI inpatients were evaluated. Resultss During the period of 2008-2017, the numbers of AMI inpatients were found to be higher in winter and spring (accounting for 53.42%). The proportion of AMI onset was higher in males than in females, and the ratio of male to female was 2.79∶1. Most of the inpatients ranged in age from 55 to 80 years, accounting for 63.70% of the total number of AMI outpatients. Spearman’s correlation analysis showed that the number of AMI inpatients had the strongest positive relationship with monthly average wind speed (r=0.613, P<0.001), followed by monthly average relative humidity (r=0.346, P<0.001) and monthly average temperature (r=-0.251, P=0.006). However, monthly average diurnal temperature range (r=0.128, P=0.163) and monthly mean pressure (r=-0.019, P=0.836) were not significantly related to the number of AMI inpatients. The results of multiple stepwise regression indicated that the number of AMI inpatients was independently affected by monthly average wind speed, monthly average relative humidity, monthly average diurnal temperature range, and monthly average temperature. Conclusions Mastering the hospitalization characteristics and seasonal distribution of AMI patients can provide a basis for scientifically managing the departments in this hospital; meanwhile, the findings of the relationships between AMI hospitalization and meteorological factors can also provide evidence for effectively strengthening patients’ self-health care consciousness.
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2019, Vol. 26 
