Renal length and inulin clearance in the radiologically normal single kidney

BE Wilson, P Davies, K Shah, W Wong, Christopher Taylor

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25 Citations (Scopus)


Compensatory hypertrophy of a single functioning kidney is well described and has been shown to occur in utero. The long-term effects of hypertrophy and hyperfiltration in this situation are unknown. This study defined the growth parameters for single kidneys during childhood and correlated them with inulin clearance. Patients were those who had a radiologically 'normal' single kidney, where the contralateral kidney was known to be non-functioning from infancy. Data were obtained from 74 children (40 boys and 34 girls) drawn from a registry of cases with a single kidney, and in whom simultaneous measurements of inulin clearance and renal length had been made at around 5, 10, and 16 years of age. Renal length was taken as the maximal bipolar measurement using real-time ultrasound scan. Inulin clearance was by continuous infusion technique. Nomograms for single kidney growth were determined against age, height, weight, and body surface area. Renal growth was correlated with inulin clearance. Renal length was found to correlate best with body surface area (r=0.85, P
Original languageEnglish
Pages (from-to)1147-1151
Number of pages5
JournalPediatric Nephrology
Issue number11
Publication statusPublished - 1 Nov 2003


  • glomerular filtration rate
  • single kidney
  • renal length
  • multicystic dysplastic kidney


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