Simulation of Ventilatory-Induced Stone Movement and Its Effect on Stone Fracture During Extracorporeal Shock Wave Lithotripsy Journal Articles uri icon

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  • Because ventilation influences renal movement, we investigated the effect of stone motion on the efficiency of extracorporeal shock-wave lithotripsy (ESWL). Comparisons of the rates of fragmentation of an experimental model of renal calculi were made between simulated high-frequency jet ventilation at 100 breaths/min. with four-mm. stone movement as measured from the fluoroscope screen, conventional mechanical ventilation at 10 breaths/min. with 32-mm. stone movement as measured from the fluoroscope screen, and a static control. Fragmentation did not differ significantly between high-frequency jet ventilation and no ventilation (static control), but was significantly greater with high-frequency jet ventilation than with conventional ventilation.


  • Whelan, J Paul
  • Gravenstein, Nikolaus
  • Welch, James L
  • Lampotang, Samsun
  • Newman, Robert C
  • Finlayson, BirdWell

publication date

  • August 1988