Effect of Ultrasound Combined with Pneumatic Lithotripsy for Upper Urinary Tract Stones during Percutaneous Nephrolithotomy

Objective To evaluate the curative effect of ultrasound combined with pneumatic lithotripsy for renal or upper urinary tract stones during percutaneous nephrolithotomy(PCNL).Methods Percutaneous nephrostomy under ultrasonography was performed.Stones were broken into small pieces by ultrasound and pneumatic lithotripter(Swiss Lithoclast Master) and evacuated with suction at the same time.Results In the 116 cases,stones were cleared off at one section in 96 cases,stones were cleared off at two section in 6 cases,12 cases with residual stones were cured by soft nephroscope or ESWL,and 2 cases with residual stones were not further treated.The average time of operation was 96 minutes and the stone clearance rate was 82.8%.No severe complication occurred during operations.Conclusion PCNL with ultrasound and pneumatic lithotripsy is a important curative method for renal or upper urinary tract stones with high efficiency,minimal invasion and high clearance rate.