Change trajectory of fluid load management behavior ability in peritoneal dialysis patients and its association with physical activity

Objective This study aims to explore the change trajectory of fluid load management ability in peritoneal dialysis (PD) patients and the correlation between different trajectories and physical activity. Methods A total of 243 patients who underwent peritoneal dialysis were selected. A longitudinal investigation was carried out using the Peritoneal Dialysis Patient Volume Management Behavior Scale and the International Physical Activity Questionnaire-Long Form (IPAQ-LF). Results Three trajectories of volume overload management behavioral ability were identified, namely C1 (low-level increasing group), C2 (medium-level increasing group), and C3 (low- to medium-level fluctuation group). There were significant differences between these categories in cultural-level trials ( χ 2 = 15.344, p = 0.018), diabetic nephropathy ( χ 2 = 11.267, p = 0.004), peritonitis during the study period ( χ 2 = 11.340, p = 0.003), and hypoalbuminemia ( χ 2 = 7.700, p = 0.021). During the first 6 months of initial peritoneal dialysis (T1–T4), each patient’s physical activity score increased [C1: ( F = 107.250, p < 0.001); C2: ( F = 45.383, p < 0.001); C3: ( F = 30.194, p < 0.001)]. At the T1 stage, the physical activity score of group C2 was significantly higher than those of groups C1 and C3 ( p < 0.01). At the T2 stage, the physical activity score of group C2 was significantly higher than that of group C3 ( p < 0.001), and the physical activity score of group C1 was significantly higher than that of group C3 ( p < 0.01). At the T3–T4 stage, the score of group C1 was significantly higher than that of groups C2 and C3 ( p < 0.01), and the score of group C2 was significantly higher than that of group C3 ( p < 0.001). Conclusion Education level, diabetic nephropathy, concurrent peritonitis, and hypoproteinemia affect the change trajectory of volume load. Additionally, volume overload management at different stages influences the physical activity of patients.