Time-dependent reasons for peritoneal dialysis technique failure and mortality

Area of Science:

• Nephrology
• Renal Replacement Therapy

Background:

• Peritoneal dialysis (PD) technique failure rates are notably higher compared to hemodialysis (HD).
• Limited data exists on the long-term impact of PD treatment duration on technique survival and differing risk factors for early versus late failure.

Purpose of the Study:

• To analyze the time-dependent impact of PD treatment duration on technique survival.
• To identify distinct risk factors associated with early and late PD technique failure.

Main Methods:

• Analysis of 709 incident PD patients from the Netherlands Cooperative Study on the Adequacy of Dialysis (NECOSAD) (1997-2007).
• Time-dependent Cox proportional hazards models were used to assess PD technique and patient survival across four follow-up periods (0-3, 3-12, 12-24, 24-36 months).
• Risk factors were identified by comparing patients who switched to HD versus those who continued PD.

Main Results:

• Technique survival rates at 1, 2, and 3 years were 87%, 76%, and 66%, respectively.
• The rate of switching to HD was highest in the first 3 months and decreased thereafter.
• Significant risk factors for PD failure included increasing age, diabetes, cardiovascular disease, and loss of residual glomerular filtration rate (rGFR).

Conclusions:

• Transplantation is a primary reason for PD cessation in The Netherlands.
• PD technique failure incidence peaks in the initial months, declining later due to reduced complications and psychosocial factors.
• Patient survival risk factors such as age, cardiovascular disease, diabetes, and rGFR also predict PD discontinuation.