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Transport of peritoneal membrane assessed before and after the start of peritoneal dialysis

Vincenzo La Milia1, Monica Limardo, Andrea Cavalli

  • 1Department of Nephrology and Dialysis, A. Manzoni Hospital, Lecco, Italy. v.lamilia@ospedale.lecco.it

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
|April 8, 2009
PubMed

Insights

Peritoneal dialysis (PD) patients with high membrane transport face increased risks. Assessing membrane transport before and after PD initiation, especially comparing continuous ambulatory PD (CAPD) and automated PD (APD), offers valuable insights.

Area of Science:

  • Nephrology
  • Renal Replacement Therapy
  • Membrane Physiology

Background:

  • High small solute peritoneal membrane transport in peritoneal dialysis (PD) patients is linked to increased morbidity and mortality.
  • The peritoneal equilibration test (PET) assesses membrane transport, typically performed after the first month of PD due to early transport changes.
  • Early assessment of membrane transport before and after PD initiation is crucial.

Purpose of the Study:

  • To evaluate small solute peritoneal membrane transport characteristics before and after initiating PD.
  • To compare membrane transport changes between continuous ambulatory PD (CAPD) and automated PD (APD) modalities.

Main Methods:

  • Small solute peritoneal membrane transport was assessed in 34 patients prior to starting PD.
  • Twenty-two patients were treated with CAPD and 12 with APD.
  • Peritoneal equilibration tests (PET) were conducted before and at intervals after PD initiation.

Main Results:

  • Small solute peritoneal membrane transport increased in CAPD patients four months after PD initiation (D/P(Creat) from 0.66 ± 0.12 to 0.73 ± 0.07).
  • In contrast, APD patients showed no significant increase in transport (D/P(Creat) from 0.64 ± 0.12 to 0.61 ± 0.07).
  • After approximately 16 months, CAPD patients exhibited higher peritoneal membrane transport (D/P(Creat) = 0.74 ± 0.06) compared to APD patients (D/P(Creat) = 0.63 ± 0.10).

Conclusions:

  • Performing PET before and after PD initiation provides critical information on small solute peritoneal membrane transport.
  • This assessment aids in understanding the influence of PD modality (CAPD vs. APD) on peritoneal membrane transport dynamics.
  • Early and serial PET evaluations can help personalize PD therapy based on individual membrane transport characteristics.
Abstract

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