IJCS | Volume 32, Nº6, November / December 2019

598 Figure 1 - Percentages of admissions for diseases of the circulatory system in Brazilian Unified Health System's ( Sistema Único de Saúde [SUS] ) due to HF in the period from 2007 to 2016 in Brazil, Rio Grande do Sul (RS) and Porto Alegre (POA). Source: Elaborated by the author based on data obtained from DATASUS (2017). Figure 2 - Age range of patients admitted for heart failure in the period from 2008 to 2016 in Brazil, RS and Porto Alegre. Source: Elaborated by the author based on data obtained from DATASUS (2017). 80 years and more 70 to 79 years 60 to 69 years 50 to 59 years 40 to 49 years 30 to 39 years 20 to 29 years 15 to 19 years 10 to 14 years 5 to 9 years 1 to 4 years Lower 1 year Nicolao et al. Heart failure: morbidity and mortality Int J Cardiovasc Sci. 2019;32(6):596-604 Original Article increase of 21%, whereas in Rio Grande do Sul, the hospital length of stay, in 2007, was 6.7 days and, in 2016, 7.5 days - a percentage change of 12%. In Porto Alegre, the average length of stay was 10.10, in 2007, and 10.06 days, in 2016, in which the percentage change was 5%. (Figure 4).