Whelan J P, Gravenstein N, Welch J L, Lampotang S, Newman R C, Finlayson B
Department of Surgery, University of Florida College of Medicine, Gainesville.
J Urol. 1988 Aug;140(2):405-7. doi: 10.1016/s0022-5347(17)41645-4.
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.
