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Evaluation of the relationship between serum carnitine levels and intradialytic complications in children with kidney failure

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Abstract

Background

Carnitine plays a crucial role in the metabolism of fatty acids as well as energy production. Previous research has suggested a significant decrease in carnitine levels in patients with kidney failure and those undergoing hemodialysis. Therefore, we designed this study to assess the prevalence and characteristics of carnitine deficiency and its association with hemodialysis complications in the pediatric population.

Methods

This research was a pilot study of 29 children undergoing hemodialysis. Before hemodialysis, a 5-mL blood sample was drawn from each patient through a peripheral vein to measure serum-free carnitine levels, complete blood count with differential, blood urea nitrogen (BUN), creatinine, and electrolytes. Each patient was observed for intradialytic complications, including muscle cramps and hypotension, during 12 sessions of hemodialysis.

Results

We included 26 participants with a mean age of 14.23 years undergoing hemodialysis. Carnitine deficiency was revealed in 54.8% of our participants. Also, there was no significant correlation between carnitine deficiency and age, gender, and BUN levels (P = 0.698, P = 0.43, and P > 0.05, respectively). Intradialytic complications, including episodes of hypotension and muscle cramps, were more frequent in patients with carnitine deficiency (P = 0.02, P = 0.01, respectively). Other reasons for muscle cramps, such as fluid overload, nutritional status, dialysis regimen, and other important lab results (phosphorus, magnesium, etc.), were ruled out.

Conclusion

In conclusion, we found a higher prevalence of carnitine deficiency in pediatric hemodialysis patients. Carnitine deficiency was significantly associated with increased intradialytic symptoms, including muscle spasms and hypotension. Our results could support a potential role of carnitine supplementation in pediatric patients with kidney failure for controlling intradialytic complications, but this requires further investigation.

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Authors and Affiliations

  1. Pediatric Chronic Kidney Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran

    Behnaz Bazargani, Sayed Yousef Mojtahedi, Daryoosh Fahimi, Fahimeh Askarian, Mastaneh Moghtaderi & Arash Abbasi

  2. Pediatrics Center of Excellence, Children’s Medical Center, 62 Qarib St., Keshavarz Blvd, 14194, Tehran, Iran

    Maryam Samimi & Maryam Bakhtiari Koohsorkhi

Authors
  1. Behnaz Bazargani
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  2. Sayed Yousef Mojtahedi
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  3. Daryoosh Fahimi
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  4. Fahimeh Askarian
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  5. Mastaneh Moghtaderi
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  6. Arash Abbasi
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  7. Maryam Samimi
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  8. Maryam Bakhtiari Koohsorkhi
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Correspondence to Maryam Bakhtiari Koohsorkhi.

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Bazargani, B., Mojtahedi, S.Y., Fahimi, D. et al. Evaluation of the relationship between serum carnitine levels and intradialytic complications in children with kidney failure. Pediatr Nephrol 37, 2179–2183 (2022). https://doi.org/10.1007/s00467-022-05449-w

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  • DOI: https://doi.org/10.1007/s00467-022-05449-w

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