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DOI: http://dx.doi.org/10.4081/nr.2010.e11

Bun:creatinine ratio: definition of the normal range in children

Sharon Gordon, Christine Sethna, Rachel Frank, Suzanne Vento, Beatrice Goilav, Michael Tau, Howard Trachtman

Abstract


The normal range for the BUN:creatinine ratio (BCR) has not been determined for infants and children. The objectives of this study were to: (1) test the hypothesis that the BCR is higher in young children; and (2) establish normal BCR ranges for children of various ages. In this retrospective single-center review, 482 patients evaluated in an ambulatory setting were studied. The mean BCR declined significantly with age (P<0.0001). There was an inverse relationship between BCR and age, BMI, and serum creatinine and a direct relationship with BUN and GFRe. Based on our findings, we conclude that BCR values in adult patients are inapplicable to children below 10 years of age. We suggest that BCR greater than 60 in children ≤10 years and greater than 30 in children >10 years be considered abnormal. Application of age-specific pediatric criteria will ensure the proper application of the BCR in evaluating acutely ill children (word count: 150).

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Submitted: 2010-05-05 15:23:32
Published: 2010-07-26 11:36:40
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Nephrology Reviews [eISSN 2035-813X] is an Open Access, peer-reviewed journal published online by PAGEPress, Pavia, Italy on behalf of Wichtig Editore, Milan, Italy. All credits and honors to PKP for their OJS.

 
 
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