Abstract
The pulsed dye laser, at 504nm. wavelength with a pulse duration of 1μsec., was used at 140mj. per pulse via a 320μ. (core) fiber for fragmentation of 72 ureteral calculi. The fragmentation efficiency and clinical results using the 140mj./320μ. fiber were compared to previous experience using the 60mj./200μ. (core) fiber. Fragmentation efficiency was significantly improved requiring many fewer laser pulses to fragment calculi of similar size and composition, and decreasing the need for auxiliary methods to complete stone fragmentation. The higher energy and larger fiber allowed for more efficient ureteroscopic ureteral stone fragmentation without compromising tissue safety.
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