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Peritoneal transport kinetics of glucose, urea, and creatinine during infancy and childhood
C H Schröder1, M J van Dreumel, R Reddingius
1Department of Pediatrics, St. Radboud University Hospital, Nijmegen, The Netherlands.
Insights
Peritoneal equilibration test (PET) reference curves are lacking for young children on continuous ambulatory peritoneal dialysis (CAPD). This study found no significant age-related differences in glucose, urea, or creatinine handling in children under and over three years old.
Area of Science:
- Pediatrics
- Nephrology
- Clinical Chemistry
Background:
- Peritoneal glucose and metabolite handling is reportedly higher in young children undergoing continuous ambulatory peritoneal dialysis (CAPD) compared to older children.
- Standardized reference curves for the peritoneal equilibration test (PET) are currently unavailable for pediatric populations, particularly for younger age groups.
- Understanding peritoneal transport is crucial for optimizing CAPD therapy in children.
Purpose of the Study:
- To describe the results of the peritoneal equilibration test (PET) in young children during the initial month of CAPD treatment.
- To investigate potential age-related differences in peritoneal handling of glucose and metabolites in pediatric CAPD patients.
- To establish preliminary data for the development of age-specific PET reference curves.
Main Methods:
- The study involved 19 pediatric patients initiating CAPD, with a mean age of 5.0 years (range: 0.3-15 years).
- Peritoneal equilibration tests (PET) were performed within the first month of CAPD treatment.
- Patients were analyzed in two subgroups: those below 3 years of age and those above 3 years of age.
Main Results:
- No significant age-dependent differences were observed in the peritoneal handling of glucose, urea, or creatinine between the two age subgroups.
- A significant correlation was found between creatinine equilibration and age, suggesting faster equilibration in younger children.
- These findings indicate that while overall metabolite handling may not differ significantly, the rate of equilibration shows an age-related trend.
Conclusions:
- The study provides initial PET data for young children on CAPD, highlighting the need for age-specific reference curves.
- While overall metabolite handling showed no significant age dependency in this cohort, creatinine equilibration appears to be faster in younger children.
- Further research with larger cohorts is warranted to establish robust age-specific PET reference ranges for pediatric CAPD patients.
Abstract:
Peritoneal handling of glucose and metabolites is reported to be higher in young children treated with CAPD than in older children. Reference curves for the standardized peritoneal equilibration test (PET) are not available for younger ages. The present study describes the results of the PET in 19 children (mean age 5.0 years, ranging from 0.3-15) during the first month of CAPD treatment. No age dependency for the handling of glucose, urea, and creatinine could be established when the group was subdivided into 1. children below the age of 3 years, and 2. children above that age. There was, however, a significant correlation between equilibration of creatinine and age, indicating more rapid equilibration at younger ages.