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Ultrasound is an effective and non-invasive method of evaluating renal swelling in infants with their first urinary tract infection.

Journal article
Authors Eira Stokland
Kerstin M Lagerstrand
Sindri Valdimarsson
Sverker Hansson
Published in Acta paediatrica (Oslo, Norway : 1992)
Volume 106
Issue 11
Pages 1868-1874
ISSN 1651-2227
Publication year 2017
Published at Institute of Clinical Sciences, Department of Radiation Physics
Institute of Clinical Sciences, Department of Pediatrics
Institute of Clinical Sciences, Department of Radiology
Pages 1868-1874
Language en
Subject categories Pediatrics


This study evaluated renal swelling in infants with a first urinary tract infection (UTI) by correlating renal length and volume to C-reactive protein (CRP) and body temperature.Ultrasounds were carried out on 104 infants at the Queen Silvia Children's Hospital, Gothenburg, Sweden - 58 boys (mean age 3.3 months) and 46 girls (mean age 4.8 months) - during the acute phase of their UTI. A second scan was performed on 94 of them four weeks later. Renal length and volume were computed to standard deviation scores (SDS).The mean renal length and volume at the first ultrasound were 1.90 SDS (±1.54) and 1.67 SDS (±1.13) for the larger kidney and 0.86 SDS (±1.01) and 0.84 SDS (±0.90) for the smaller kidney. There was a significant decrease in renal length and volume between the two ultrasounds, with a mean difference of 0.96 SDS (±1.24) and 1.07 SDS (±1.10) for the larger kidney (p<0.0001).The length and volume of the larger kidney correlated with CRP (p<0.001), but only the renal length correlated with fever (p<0.001).Early ultrasound determined renal swelling in infants with a UTI and may be a valuable non-invasive way of identifying infants with renal parenchymal involvement. This article is protected by copyright. All rights reserved.

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