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Ultrasound is an effective and noninvasive method of evaluating renal swelling in infants with their first urinary tract infection
Author(s) -
Simrén Y,
Stokland E,
Lagerstrand K M,
Valdimarsson S,
Hansson S
Publication year - 2017
Publication title -
acta paediatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/apa.13849
Subject(s) - medicine , urinary system , ultrasound , kidney , urology , radiology
Abstract Aim This study evaluated renal swelling in infants with a first urinary tract infection ( UTI ) by correlating renal length and volume with C‐reactive protein ( CRP ) and body temperature. Methods 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 4 weeks later. Renal length and volume were computed to standard deviation scores ( SDS ). Results 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). Conclusion Early ultrasound determined renal swelling in infants with a UTI and may be a valuable noninvasive way of identifying infants with renal parenchymal involvement.

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