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A step forward towards accurately assessing glomerular filtration rate in newborns

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Abstract

In this edition of Pediatric Nephrology, Milena Treiber and colleagues have published a study on cystatin C (CysC) concentrations in relation to renal volumetry in 50 small-for-gestational age (SGA) and 50 appropriate-for-gestational age (AGA) neonates, deriving a new formula for estimating neonatal glomerular filtration rate (GFR). The study builds on previous work which established that renal volumetry together with CysC blood levels is a superior method for establishing GFR in term and pre-term newborns [The Journal of Pediatrics (2014) 164:1026–1031.e2]. Treiber et al. use the expected difference between SGA and AGA renal volumes to document the superiority of their new formula, which is based on total renal volume, CysC and body surface area, but does not incorporate gold-standard inulin clearance. Treiber et al.’s study adds new knowledge to the field that will hopefully improve the safety of renally excreted critical dose drugs in the newborn period. This editorial discusses the strengths and limitations of the current study.

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Authors and Affiliations

  1. Department of Pediatrics, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada, N6A 5 W9

    Guido Filler

  2. Department of Pathology and Laboratory Medicine, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada, N5A 5A5

    Guido Filler

  3. Department of Medicine, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada, N6A 5 W9

    Guido Filler

  4. Department of Pediatrics, Children’s Hospital, London Health Sciences Centre, Western University, 800 Commissioners Road East, London, ON, Canada, N6A 5 W9

    Guido Filler

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  1. Guido Filler
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Correspondence to Guido Filler.

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Filler, G. A step forward towards accurately assessing glomerular filtration rate in newborns. Pediatr Nephrol 30, 1209–1212 (2015). https://doi.org/10.1007/s00467-014-3014-1

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  • DOI: https://doi.org/10.1007/s00467-014-3014-1

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