A Theory-based Fluid Self-management Program

The intervention implementation process includes: (1) PowerPoint presentations for group and individual education sessions; (2) a social support system using a WhatsApp Channel as a follow-up platform; (3) individual management and monitoring through a diary tracking fluid intake and symptoms of illness; (4) distribution of visual educational materials using digital stickers and posters on the WhatsApp Channel. Educational materials include: (1) Self-Management of Hemodialysis Treatment; (2) Fluid Intake Control; (3) Self-Management of Nutritional Needs; (4) Self-Management in Seeking Information Sources; (5) Emotional State Management. The intervention was conducted at Dr. Soeradji Tirtionegoro General Hospital in Klaten and Panembahan Senopati Regional General Hospital in Bantul. The intervention was implemented through: (1) in-person classes; (2) individual bedside education during hemodialysis sessions; (3) a WhatsApp Channel as a platform for providing social support related to the educational materials provided. The delivery of this education prioritized patient-centered communication and active patient participation. Group education sessions lasted 60 minutes and were held once after the initial data collection, while individual education sessions lasted 10 minutes and were held once a week according to the patients' hemodialysis schedules for 8 weeks. Monitoring and social support were provided three times a day at 9:00, 14:00, and 19:00 WIB for 8 weeks. The digital logbook was updated once a day for 8 weeks. This intervention is individually tailored to each patient's learning needs, literacy level, self-management barriers, eating habits, psychosocial conditions, and clinical issues identified during dialysis sessions. Any changes that occur during the study-including adjustments to the educational focus based on the patient's level of understanding, dialysis complications, or scheduling constraints-will be documented by the research team. Adherence to the intervention was ensured through: (1) standardized intervention guidelines; (2) training for the research team's nurses; (3) the use of a structured follow-up checklist; (4) routine monitoring meetings led by the principal investigator; and (6) periodic observations of the intervention's implementation. The principal investigator evaluated adherence to the intervention weekly to ensure consistency among the educators. The number of educational sessions completed, session duration, participant attendance, and completion of follow-up visits will be documented throughout the study. Any deviations from the intervention protocol will be recorded and analyzed

Inclusion criteria

• Receiving maintenance hemodialysis for ≥ 3 months
• Undergoing hemodialysis two times per week on a regular schedule
• Possession of a smartphone with active WhatsApp use
• Ability to read and understand Indonesian, with support provided in Javanese where necessary.
• Provision of written informed consent

Exclusion criteria

• Severe cognitive impairment or diagnosed psychiatric disorders affecting comprehension or participation, as documented in the medical record.
• Severe visual, hearing, or communication impairments not corrected by assistive devices
• Current hospitalisation or unstable medical condition
• Planned kidney transplantation or dialysis modality change during the study period
• Participation in another interventional study related to fluid management or self-management
• Inability to engage with the WhatsApp Channel follow-up