Possible variances of blood urea nitrogen, serum potassium and phosphorus levels and interdialytic weight gain accounted for compliance of hemodialysis patients

Objective: The aim of this study was to assess the possible variances of blood urea nitrogen (BUN), serum potassium (SK) and serum phosphorus (SPO ₄) levels and interdialytic weight gain (IWG) accounted for compliance of uremic patients on hemodialysis (HD). Methods: BUN, SK and SPO₄ levels and IWG of uremic patients (n=310) regularly undergoing three HD sessions per week for more than 1 year in Japan were assessed. Patients suffering from problems influencing dietary intake and those with malnutrition were excluded. The variances accounted for self-efficacy for health-related behavior and avoidance-oriented coping (AOC) with stress were assessed by hierarchical multiple regression analyses. Results: BUN and SPO ₄ levels were not significantly (P<.05) associated with self-efficacy or AOC. SK levels and IWG were significantly (P<.05) associated with self-efficacy and/or AOC. The variances of SK levels and IWG accounted for self-efficacy and/or AOC, independent of age, sex, duration of HD and facilities, were 1.6% and 5.0%, respectively. Conclusions: Although the variances of SK levels and IWG accounted for self-efficacy and/or AOC were rather small, the significance of their relationships may suggest that intervention for self-efficacy or AOC could improve compliance and reduce SK levels and IWG of uremic patients on HD.