Stone-kidney size score predicts pediatric PCNL success

  • Çitamak B & al.
  • J Pediatr Urol
  • 10 Oct 2018

  • curated by Craig Hicks
  • Clinical Essentials
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Takeaway

  • A new stone-kidney size (SKS) score can be used in pediatric clinical practice to predict the success of percutaneous nephrolithotomy (PCNL).

Why this matters

  • "Scoring systems have been developed to predict PCNL success and complication rates in adult patients," say researchers. "However, most of these scoring systems require multiple parameters that preclude their use in daily pediatric practice."

Study design

  • Researchers retrospectively analyzed the health records of patients with kidney stones who underwent PCNL (N=358; mean age, 8.3 years), examining factors that predicted success or complications.
  • They combined average stone/kidney index values and number of stones to derive the SKS score, ranging from 2 to 4, for each patient.
  • Funding: None disclosed.

Key results

  • Success rates for SKS scores of 2, 3, and 4 were 86.4%, 73%, and 62.9% (P<.001 respectively.>
  • Complication rates for SKS scores of 2, 3, and 4 were 13%, 22.1%, and 23.8% (P=.014), respectively.

Limitations

  • The study was retrospective and not randomized.

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