Comparison of Improved Flank Position with Lithotomy Position in Holmium Laser Lithotripsy Through Ureteroscope for Upper Ureteral Calculi

【Objective】To compare the efficacy and advantage of the improved flank position with coventional lithotomy position in holmium laser lithotripsy through ureteroscope for upper ureteral calculi.(【Methods】)One hundred and fifty cases were randomly assigned to the group A with the improved flank position,meanwhile 75 cases were randomly assigned to the group B with the conventional lithotomy position.All patients underwent transureteroscope lithotripsy for upper ureteral calculi.The successful rate of stone fragmentation after single procedure was compared between two groups.【Results】The successful rate of stone fragmeatation with single procedure was 96% in group A,obviously higher than 64% in group B(P0.05).【Conclusion】The improved flank position is appropriate and effective for holmium laser lithotripsy through ureteroscope for upper ureteral calculi.It has more advantages than conventional lithotomy position.Its successful rate is similar to that of ESWL and flexible ureteroscope lithotripsy for upper ureteral calculi according to reports of the same period.therefore it can be considered as the first choice for treating upper ureteral calculi through ureteroscope.