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Frequency of low carnitine levels in children on dialysis

Alejandra Aguilar-Kitsu1, Pilar Ibarra-Cazares, Leticia Mendoza-Guevara

  • 1Hospital de Pediatria, Centro Médico Nacional Siglo XXI, IMSS, México.

Advances in Peritoneal Dialysis. Conference on Peritoneal Dialysis
|September 21, 2006
PubMed

Insights

Low serum carnitine is common in pediatric patients undergoing dialysis. This study found high frequencies of low carnitine levels in children on peritoneal dialysis (PD) and hemodialysis (HD).

Area of Science:

  • Pediatric Nephrology
  • Nutritional Biochemistry
  • Renal Replacement Therapy

Background:

  • Carnitine is essential for fatty acid metabolism.
  • Dialysis patients may have altered carnitine levels due to nutritional status and dialysis losses.
  • Understanding carnitine status in pediatric dialysis patients is crucial for metabolic health.

Purpose of the Study:

  • To determine the prevalence of low serum carnitine levels in pediatric patients undergoing peritoneal dialysis (PD) and hemodialysis (HD).
  • To investigate potential correlations between carnitine levels, dialysis modality, and dietary intake.

Main Methods:

  • Prospective cross-sectional study of 100 pediatric patients (<17 years) on PD or HD for >3 months.
  • Exclusion of patients with primary carnitine deficiency.
  • Measurement of serum total, free, and acylcarnitine; assessment of carnitine intake via a 4-day food diary.

Main Results:

  • 75% of patients exhibited lower-than-normal serum carnitine levels; 29% met criteria for deficiency.
  • No significant difference in carnitine levels was observed between PD and HD groups.
  • No correlation found between free carnitine levels and duration of dialysis or estimated carnitine intake.

Conclusions:

  • A high frequency of low serum carnitine levels exists in pediatric patients on chronic dialysis.
  • Dialysis modality (PD vs. HD) did not influence carnitine status in this cohort.
  • Further investigation into carnitine supplementation strategies for pediatric dialysis patients is warranted.

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