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The peritoneal equilibration test variables in pediatric CAPD patients

M Fukuda1, K Kawamura, T Okawa

  • 1Department of Nephrology, Tokyo Metropolitan Kiyose Children's Hospital, Japan.

Acta Paediatrica Japonica : Overseas Edition
|February 1, 1994
PubMed
Summary

The peritoneal equilibration test (PET) in children shows higher peritoneal permeability than in adults. A large residual volume (RV) in the abdominal cavity may indicate dialysate leaks, impacting treatment effectiveness.

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Area of Science:

  • Nephrology
  • Pediatric Nephrology
  • Dialysis

Background:

  • The Peritoneal Equilibration Test (PET) is crucial for tailoring continuous ambulatory peritoneal dialysis (CAPD) in adults.
  • Pediatric patients exhibit distinct peritoneal transport characteristics, limiting direct application of adult PET classifications.
  • Understanding pediatric peritoneal function is vital for optimizing CAPD therapy in children.

Purpose of the Study:

  • To evaluate the applicability of the Peritoneal Equilibration Test (PET) in pediatric CAPD patients.
  • To analyze peritoneal transport parameters including D/P creatinine, D/D0 glucose, and residual volume (RV) in children.
  • To investigate the correlation between PET parameters, fluid drainage, and dialysate leaks in pediatric patients.

Main Methods:

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  • Conducted the PET using Twardowski's standardized technique on 20 pediatric patients (1.5-24 years) undergoing CAPD.
  • Calculated key PET parameters: D/P creatinine, D/D0 glucose, and residual volume (RV).
  • Analyzed correlations between PET parameters, fluid drainage, and observed dialysate leaks.

    • Main Results:

    • Pediatric patients demonstrated higher peritoneal permeability (elevated D/P creatinine and D/D0 glucose) compared to adult data.
    • Significant correlations were found between creatinine/glucose levels and peritoneal fluid drainage.
    • A large mean residual volume (425 ± 125 mL/m²) was identified and significantly correlated with dialysate leak occurrences.

    Conclusions:

    • The PET is adaptable for assessing pediatric peritoneal function, revealing higher permeability than in adults.
    • Elevated residual volume (RV) serves as a potential indicator for dialysate leaks, including latent ones.
    • Large RV may dilute instilled dialysate, potentially reducing drainage and metabolite transport rates in pediatric CAPD.