Heart failure (HF) is a debilitating and progressive disease, defined as an inability of the heart to supply oxygen demands to peripheral organs. 1 It is a major cause of morbidity and mortality that affects an increasing number of patients due to increased life expectancy. 2 The prevalence of HF, even in the young population, is expected to increase approximately 46% from 2012 to 2030, resulting in more than 8 million individuals affected by this disease in the United States. 3 It has a great socioeconomic impact with major healthcare costs due to hospitalization, rehospitalization, and decline in patients' quality of life.Ineffective self-care or medication prescription adherence contributes to progression of the disease and recurrent hospitalizations that can reach 20% in the first 30 days after discharge. 4 In this scenario, successful communication between multidisciplinary health teams and patients depends on full understanding of the instructions and their reason. This requires that two major components be carefully observed: the cognitive function and mental health of these patients. 4