Association of phase angle on bioelectrical impedance analysis and dialysis frequency with survival of chronic hemodialysis patients

Phase angle, a parameter by Bioelectrical Impedance Analysis, can detect body composition changes, so it can be used as a prognostic indicator in some chronic conditions. This study was for determining the relationship between PhA and hemodialisis frequency with the survival of chronic hemodialisis patients. This longitudinal retrospective study involved 173 chronic hemodialisis patients at Rasyida Renal Hospital. The Kaplan-Meier method is used to determine the survival. Cox proportional hazard analysis is used to determine which variables significantly increase mortality. During the study period, 89 patients underwent hemodialysis 3x a week (4 hours/session), and 84 patients underwent HD 2x a week (5 hours/session). Demographic and clinical characteristics in both groups were similar. There was no difference in PhA value in groups of 3x a week and group 2x a week (4.02 +/- 1.13 vs 4.25 +/- 1.12). Patients with twice a week hemodialisis had a shorter survival than the 3x week group (35.14 +/- 2.76 vs 38.62 +/- 3.03) although it was not statistically significant (p = 0.126).