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Peritoneal membrane transport function in children receiving long-term dialysis

B A Warady1, S R Alexander, S Hossli

  • 1Children's Mercy Hospital, Kansas City, MO 64108, USA.

Journal of the American Society of Nephrology : JASN
|November 1, 1996
PubMed
Summary
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Pediatric nephrology (Berlin, Germany)·2012

This study standardized peritoneal solute transport testing in 95 pediatric patients undergoing peritoneal dialysis. Results showed similar solute transport ratios across age groups, but mass transfer coefficients varied, suggesting developmental changes in the peritoneal membrane.

Area of Science:

  • Nephrology
  • Pediatric Nephrology
  • Peritoneal Dialysis

Background:

  • Accurate characterization of peritoneal solute transport capacity in children is limited by non-standardized testing and small sample sizes.
  • Peritoneal dialysis (PD) is a vital renal replacement therapy for pediatric patients.

Purpose of the Study:

  • To standardize and evaluate peritoneal solute transport capacity in a large cohort of pediatric patients undergoing chronic peritoneal dialysis.
  • To analyze solute transport parameters across different pediatric age groups.

Main Methods:

  • A standardized 4-hour peritoneal equilibration test (PET) was administered to 95 pediatric patients (age range: <1 to 19 years).
  • Dialysate-to-plasma (D/P) ratios for creatinine and urea, and dialysate glucose (D/D0) were measured.

Related Experiment Videos

  • Mass transfer area coefficients (MTAC) were calculated for creatinine, urea, glucose, and potassium.

    • Main Results:

    • D/P ratios for creatinine and urea, and D/D0 for glucose were similar across all pediatric age groups and comparable to adult values.
    • Normalized MTAC values for glucose and potassium showed significant differences across age groups.
    • Quadratic regression revealed a nonlinear decrease with age for MTAC of creatinine, glucose, and potassium.

    Conclusions:

    • Standardized PET provides reliable solute transport data across the pediatric age spectrum, similar to adults.
    • Differences in normalized MTAC values among pediatric age groups suggest maturational changes in the peritoneal membrane or effective surface area.
    • These findings contribute to a better understanding of peritoneal membrane function in children undergoing PD.