Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon; Cardiology department, Yaoundé Central Hospital, Yaoundé, Cameroon.
Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon.
Ann Cardiol Angeiol (Paris). 2021 Jun;70(3):148-152. doi: 10.1016/j.ancard.2021.04.002. Epub 2021 May 4.
Epidemiological data of heart failure (HF) decompensation from the northern hemisphere suggests higher rates during winter.
We aimed to explore the seasonal variation in decompensated HF admission and mortality rates in a country with equatorial climate.
We conducted a retrospective cross-sectional study by chart review of the admission, discharge registries and patient files from 2016 to 2018 in the cardiology unit of the Yaoundé Central Hospital, Cameroon. Data was collected on HF morbidity and mortality from the registers and patients' files. Corresponding seasonal climatic data was obtained from the meteorology office of the Cameroonian ministry of transports. Analysis of variance and Chi-square test were respectively used to compare the continuous and categorical data between across seasons. Correlation between continuous data was assess with the Spearman correlation.
Decompensated HF accounted for 636 (36.2%) out 1755 cardiology unit admission and an 18% lethality rate. Decompensated HF admission, mortality and lethality rates were respectively 38.2%, 6.7% and 17.9% higher during the long rainy season (all P values>0.05). We observed a borderline-to-significant inverse linear continuous correlation between monthly temperatures and admission rate (r=-0.301; P=0.070), lethality rate (r=-0.361; P=0.030) and mortality rate (r=-0.385; P=0.020). There was no significant difference of the distribution of precipitating factors between seasons.
Although statistically insignificant, decompensated HF admissions and mortality increase in rainy season where the temperature is lower in an equatorial climate.
来自北半球的心力衰竭（HF）失代偿的流行病学数据表明，冬季的发生率更高。
我们旨在探索在具有赤道气候的国家中，失代偿性 HF 入院和死亡率的季节性变化。
我们通过对喀麦隆雅温得中央医院心内科的入院和出院登记处以及患者档案进行回顾性横断面研究，对 2016 年至 2018 年的数据进行了研究。从登记处和患者档案中收集 HF 发病率和死亡率的数据。从喀麦隆交通部的气象局获得相应的季节性气候数据。方差分析和卡方检验分别用于比较各季节之间的连续和分类数据。使用 Spearman 相关系数评估连续数据之间的相关性。
失代偿性 HF 占 1755 例心内科入院患者的 636 例（36.2％），死亡率为 18％。失代偿性 HF 入院，死亡率和病死率分别在长雨季期间高出 38.2％，6.7％和 17.9％（所有 P 值均> 0.05）。我们观察到每月温度与入院率（r =-0.301； P =0.070），死亡率（r =-0.361； P =0.030）和死亡率（r =-0.385； P =0.020）之间存在线性负相关。季节之间诱发因素的分布没有显着差异。
尽管统计学上无显着性，但在温度较低的雨季，失代偿性 HF 入院和死亡率会增加，而在赤道气候中则如此。
