Pediatric bladder scans: does patient position matter?

  • Zillioux JM & al.
  • J Pediatr Urol
  • 31 Mar 2018

  • curated by Craig Hicks
  • Clinical Essentials
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Takeaway

  • Bladder scans in a standing position may be used to assess bladder volumes in children, shortening exam times and increasing efficiency vs supine scans.

Why this matters

  • "Despite its widespread use in pediatric urology clinics, portable bladder scanning is an insufficiently studied tool that lacks standardized protocols," say researchers.

Study design

  • Researchers examined pediatric patients diagnosed with daytime wetting, nocturnal enuresis, or nonfebrile urinary tract infection (n=60; mean age, 9.2 years; age range, 3-18 years; 85% girls).
  • Each patient received a formal supine renal/bladder ultrasound and prevoid and/or postvoid bladder scans in both standing and supine positions; researchers compared these methods using repeated measures 1-way ANOVA.
  • Funding: None.

Key results

  • With the exception of postvoid supine scans, all bladder scanning estimates significantly correlated with ultrasound volume, with prevoid standing having the strongest correlation (r = 0.83).
  • Prevoid scans in both positions significantly underestimated volume in children aged
  • Both standing and supine scans overestimated postvoid volumes by 29 and 18 mL, respectively (P<.001>

Limitations

  • Sample size was small.

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