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Peritoneal dialysis clearance can replace residual renal function.

N Aslam1, J Bernardini, L Fried

  • 1Renal and Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh 15261, USA. aslamn@msx.dept-med.pitt.edu

Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis
|July 28, 2001
PubMed
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Increasing peritoneal dialysis clearance can effectively substitute for lost kidney function, leading to comparable survival rates. This suggests that optimizing dialysis prescriptions can maintain patient outcomes despite declining residual renal function.

Area of Science:

  • Nephrology
  • Renal Replacement Therapy

Background:

  • Residual renal function is crucial for patients on dialysis.
  • There is ongoing debate regarding the efficacy of increasing peritoneal dialysis clearance to compensate for diminished kidney function.

Purpose of the Study:

  • To investigate the impact of both renal and peritoneal clearances on patient and technique survival.
  • To determine if enhanced peritoneal dialysis clearance can substitute for declining residual renal function.

Main Methods:

  • Prospective data collection from 90 incident peritoneal dialysis patients over 8 years.
  • Patients were grouped based on achieving target weekly Kt/W and creatinine clearance (CCr) in their first year.
  • Survival outcomes were analyzed using Cox proportional hazard models, controlling for comorbidity.

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Main Results:

  • One-year patient survival was similar between groups (86.3% vs. 80.9%).
  • One-year technique survival was also comparable (77.3% vs. 83.2%).
  • Peritonitis was identified as the sole significant predictor of worse technique survival.

Conclusions:

  • Peritoneal dialysis patients who improved clearances through prescription adjustments showed survival comparable to those who maintained target clearances.
  • This supports the hypothesis that increased peritoneal dialysis clearance can effectively replace lost residual renal function.
  • Further large-scale multicenter trials are recommended to confirm these findings.