Álvaro F. Gudiño-Gomezjurado, Servicio de Medicina Interna, “Hospital San Vicente de Paúl”, Ibarra, Ecuador
René Buitrón-Andrade, Departamento de Epidemiología y Bioestadística, “Pontificia Universidad Católica del Ecuador”, Quito. Ecuador

Introduction: Heart failure is a global health problem. In Ecuador it is estimated that between 1% and 2% of the population suffers this disease. Objective: To determine mortality markers in outpatients with a diagnosis of heart failure in the Ecuadorian Andean population. Methods: A cross-sectional and monocentric study was carried out in 230 mestizo, indigenous and Afro-descendant patients diagnosed with heart failure. The differences between the three ethnic groups were statistically analyzed by one-way ANOVA and Crammer’s V test. Additionally, a logistic regression analysis was performed. Results: The predominant ethnic group was mestizo (73.5%), followed by indigenous people (15.5%) and afro-descendants (10.5%). The logistic regression analysis showed that age (OR: 1.046; 95% CI: 1.014-1.078; p = 0.04), ethnicity (OR: 1.713; 95% CI: 1.053-2.78; p = 0.030), the presence of atrial fibrillation (OR: 2.711; 95% CI: 1.03-7.12; p = 0.042) and the number of hospitalizations (OR: 3.026; 95% CI: 1.85-4.94; p = 0.000), were markers of poor prognosis. On the other hand, mean arterial pressure (OR: 0.969; 95% CI: 0.94-0.99; p = 0.010), absence of ischemic cerebrovascular event (OR: 0.15; 95% CI: 0.48-0.527; p = 0.03) and total cholesterol levels (OR: 0.991; 95% CI: 0.987-0.996; p = 0.000) were protection markers. Conclusions: In this population, ethnicity, atrial fibrillation, mean arterial pressure, ischemic cerebrovascular event, total cholesterol levels and the number of hospitalizations were established as mortality markers in outpatients diagnosed with heart failure.

Keywords: Heart failure. Ethnicity. Mortality. Prognosis.