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The effect of rate of shock wave delivery on the efficiency of lithotripsy
Ryan F Paterson1, Ramsay L Kuo, James E Lingeman
1Methodist Hospital Institute for Kidney Stone Disease, Department of Urology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Purpose Of Review:
The potential mechanisms of a shock wave rate effect are reviewed here, together with a report on the results of in-vitro, in-vivo and clinical studies that have assessed the effect of altering the shock wave rate on stone breakage and tissue injury by shock wave lithotripsy.
Recent Findings:
The vast majority of studies assessing shock wave rate have reported improved stone fragmentation and a reduction in shock wave lithotripsy-induced tissue damage with slower rates of shock wave delivery. However, the optimal shock wave rate has not been determined.
Summary:
Slower rates of shock wave lithotripsy appear to improve the efficiency of this approach and therefore this suggests the need for a randomized clinical trial to assess shock wave rate.
