Fátima Aparecida A. Almeida et al. Felipe Carrhá Machado José Andrade Moura Junior Armênio Costa Guimarães
BACKGROUND: There is a high global and cardiovascular mortality rate among patients who need hemodialysis. OBJECTIVE: To assess global and cardiovascular mortality and to identify the risk factors in patients who undergo hemodialysis. METHODS: Observational, prospective study. A total of 334 patients were studied within three years. Primary outcomes: global and cardiovascular mortality. Survival was assessed through Kaplan-Meier method, and the risk variables were identified by means of bivariate and multivariate Cox regression. RESULTS: A total of 189 men (56.6%), aging 48.8 ± 14.2, majority non-white (295, 88.3%) and who did finished the elementary school (211, 63.2%). Global mortality rate was 21.6%, with a 50% rate of 146-month survival; cardiovascular mortality rate was 41.7% (30/72), with a 75% rate of 141-month survival. In the bivariate analysis, the relative risk (RR) for non-cardiovascular and cardiovascular death increased when age >60 years old was Hb126 mg/dl. Only non-cardiovascular death with low school grade and widow, Hb<11.0 g/dl, Ht100 mg/dl, Ca product x P9.2 mg/dl decreased with blood pressure (BP) >140/90 mmHg (before hemodialysis session) and Ht>36%; Obit due only to cardiovascular factors increased with creatinine >9.4 mg/dl. In the multivariate analysis, non-cardiovascular and cardiovascular RR increased with age >60 years old and Hb126 mg/dl, and non-cardiovascular death RR increased with urea removal rate in hemodialysis (Kt/V) 60 years old and Hb126 mg/dL, and for non-cardiovascular cause of death, Kt/V<1,2.