• Revista médica de Chile · May 2021

    [Seasonal variation of acute myocardial infarction deaths in Chile].

    • Jaime Cerda and Claudia Bambs.
    • Departamento de Salud Pública, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
    • Rev Med Chil. 2021 May 1; 149 (5): 665-671.

    BackgroundHospitalization and deaths due to cardiovascular diseases (CVD), have a peak in frequency during winter.AimTo assess the existence of seasonal variation in deaths due to acute myocardial infarction (AMI) in Chile.Material And MethodsAnalysis of death report databases available at the website of the Chilean Ministry of Health. The seasonality of deaths due to AMI (codes ICD-10 I21, I22, I23) occuring in Chile between 2001-2016 were analyzed using a geometric model assuming a sinusoidal cyclic pattern.ResultsDuring the period 2001-2016, a total of 94,788 deaths due to AMI were registered, corresponding to 93,349 corrected deaths. Of the latter, 29.2% occurred in winter, 24.9% in spring, 24.0% in autumn and 21.8% in summer. The geometric model showed a marked sinusoidal pattern for the aggregated data. The peak-to-low ratio of deaths was 1.41 (95% CI 1.38-1.44). The peak of deaths occurred during July in 14 out of 16 years analyzed.ConclusionsIn Chile, deaths due to AMI have a marked seasonal pattern, characterized by a higher number of deaths in winter and a lower number in summer.

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