Peritoneal dialysis versus hemodialysis in patients with delayed graft function

Area of Science:

• Nephrology
• Transplantation Surgery
• Critical Care Medicine

Background:

• Delayed graft function (DGF) is a common complication following kidney transplantation, associated with adverse patient and graft outcomes.
• The optimal dialysis modality post-transplant for recipients experiencing DGF remains an area of clinical uncertainty.
• Understanding the impact of post-transplant dialysis on perioperative and long-term graft outcomes is crucial for patient management.

Purpose of the Study:

• To investigate whether the choice of post-transplant dialysis modality (peritoneal dialysis vs. hemodialysis) influences perioperative and long-term outcomes in kidney transplant recipients with DGF.
• To compare wound complications, hospitalization duration, and time to dialysis independence between PD and HD groups.
• To evaluate the impact of dialysis modality on graft survival, acute rejection, and estimated glomerular filtration rate (eGFR) at various time points.

Main Methods:

• A retrospective observational quality initiative was conducted across two Canadian renal transplant centers.
• Patients experiencing DGF post-kidney transplantation were identified and categorized based on their post-operative dialysis modality: peritoneal dialysis (PD) or hemodialysis (HD).
• Baseline characteristics, perioperative outcomes (wound infection, hospitalization length, dialysis duration), and long-term graft outcomes (readmission, graft loss, acute rejection, eGFR) were analyzed.

Main Results:

• No significant differences in baseline factors were observed between the PD (n=14) and HD (n=63) groups.
• The PD group experienced a higher incidence of wound infection/leakage (p=0.024) but demonstrated a shorter length of hospitalization (p=0.009) and reduced time requiring post-operative dialysis (p=0.043).
• No significant differences were found in hospital readmissions within 6 months, graft loss at one year, acute rejection episodes, or eGFR at 30 days, 6 months, and one year between the PD and HD groups.

Conclusions:

• In kidney transplant recipients with DGF, post-transplant peritoneal dialysis is associated with increased wound complication risks but offers benefits of shorter hospital stays and quicker dialysis independence compared to hemodialysis.
• Long-term graft outcomes, including graft survival and function, do not appear to be significantly affected by the choice between PD and HD in this DGF cohort.
• Further research is warranted to identify specific patient profiles that would benefit most from early peritoneal dialysis catheter removal post-transplantation.