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Urolithiasis

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Pediatric Urology

Abstract

The initial aim in stone management is relief of symptoms.

Secondary aims:

  1. 1.

    Achieve stone-free status.

  2. 2.

    Reduce or prevent stone recurrence.

Summary of evidence for these aims:

  • The most common presenting complaint is abdominal pain. Our review found no study evaluating medical therapy to control acute renal colic in children.

  • Although studies in adults conclude that alpha-blockers promote spontaneous stone passage, evidence in children is not conclusive.

  • Two studies reported spontaneous stone passage in 34 and 47 % of children.

  • Reported stone-free rates for renal stones <1 cm were 63–86 % for shock wave lithotripsy (SWL) and 50–90 % for ureteroscopy. Efficiency quotients (EQ) were only reported for SWL, with approximately 25 % needing additional procedures. However, at least a third of patients undergoing ureteroscopy needed a period of stenting to dilate the ureter before the stone could be accessed, and most had postoperative stents, meaning some had as many as three procedures to achieve stone-free status.

  • Unlike adults, lower pole stones in children are as effectively treated by SWL as those in other renal locations.

  • One trial compared monotherapy percutaneous nephrolithotomy (PCNL) to SWL for renal stones 1–2 cm, finding stone-free rates greater with PCNL, 95 % versus 85 %.

  • One trial found no difference in stone recurrence in those stone-free versus having fragments <5 mm after SWL.

  • Recurrence after stone-free status occurred in ≤10–33 % of patients. One study reported significantly fewer recurrences with potassium citrate therapy.

  • Low-sodium high-potassium diet resolved hypercalciuria in 50 % of children, but was difficult to maintain.

  • Indications and duration of medical therapy with potassium citrate or thiazides are not defined for children.

  • Our review found no study evaluating stone recurrence rates in children with versus without 24-h urine stone-risk profile determinations in first-time pediatric stone formers.

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Correspondence to Linda A. Baker M.D. .

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Baker, L.A., Bush, N.C. (2013). Urolithiasis. In: Snodgrass, W. (eds) Pediatric Urology. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6910-0_17

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  • DOI: https://doi.org/10.1007/978-1-4614-6910-0_17

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