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Is omitting post urinary-tract-infection renal ultrasound safe after normal antenatal ultrasound? An observational study
  1. Dan Miron1,
  2. Ahmed Daas1,
  3. Waheeb Sakran2,
  4. Dimitry Lumelsky3,
  5. Ariel Koren2,
  6. Yoseph Horovitz1
  1. 1Pediatric Department A, HaEmek Medical Center, Afula, Israel
  2. 2Pediatric Department B, HaEmek Medical Center, Afula, Israel
  3. 3Radiology Department, HaEmek Medical Center, Afula, Israel
  1. Correspondence to:
    Dr Dan Miron
    Pediatric Department A, HaEmek Medical Center, Afula 18101, Israel;miron_da{at}


Background: Guidelines recommend obtaining a renal ultrasonogram (RUS) for young children after a first urinary tract infection (UTI).

Objective: The aim of the current study was to assess the concordance of prenatal and post-UTI RUS findings in children with a first simple UTI.

Methods: This was a prospective study and included all children aged 5 years or younger who were hospitalised with a first simple UTI (determined as clinical response and normalisation of temperature within 48 h on initiation of antibacterial therapy with no complications). Data were collected from each child regarding the results of prenatal and post-UTI RUS.

Results: Overall, 250 children were included in the study and the results of late-pregnancy and post-UTI RUS were available for 84% (n = 209). Complete concordance between the two RUS was demonstrated in 96% (n = 201). The predictive value of normal antenatal to normal post-UTI RUS was 96% (95% CI: 93% to 99%). These results include four children with mild transient pelvic dilatation. In eight children in whom renal anomalies were demonstrated only in post-UTI RUS, the influence of these anomalies on the children’s management was negligible.

Conclusions: Prenatal-RUS have been performed in most children <5 years old hospitalised with a first simple UTI. Concordance with post-infection tests is very high. Findings which appear only in post-infectious RUS usually have negligible effects on children’s management. Thus, in such children with normal antenatal RUS omitting post-UTI RUS could be considered.

  • RUS, renal ultrasonogram
  • UTI, urinary tract infection
  • VCUG, voiding cystourethrography
  • VUR, vesicourethral reflux
  • renal ultrasonogram
  • urinary tract infection
  • child
  • pregnancy
  • vesicourethral reflux

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  • Published Online First 16 January 2007

  • Competing interests: None.

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