Clinical evaluation of combined pneumatic and ultrasound lithotripsy for complex renal calculi

Objective:To evaluate the clinical efficacy of combined pneumatic and ultrasound lithotripsy for complex renal calculi with percutaneous nephrolithotripsy.Methods:27 cases(32 laterals) with complex renal calculi underwent percutaneous nephrolithotripsy(PCNL)by ultrasonic power of Swiss Lithoclast Master(EMSIII,Switzerland)with positioning perspective of B-ultrasonography or C-arm X-ray machine during November 2006 and May 2008.Results:Primary removal of the calculi were achieved in 25 cases,among which 5 cases received simultaneous removal of bilateral multiple renal calculi and 2 cases were referred to secondary procedure.The curative rate was 84.4%(27/32)and average time consumption was 128min for the procedure.The hospital stay was 9.5 days and no serious complications occurred.Conclusion: Percutaneous nephrolithotomy with EMSⅢ for complex renal calculi is recommended for the minimal invasion,higher curative rate and safety in performance.