[Analysis of clinical efficacy and safety of combining pneumatic and ultrasonic power in percutaneous nephrolithotomy (PCNL) for renal stones].

ABSTRACT

OBJECTIVE: To investigate the clinical efficacy and safety of combining pneumatic and ultrasonic power during PCNL. METHODS: From Sep 2003 to Aug 2005, we treated 486 patients (509 kidneys) by combining pneumatic and ultrasonic power during percutaneous nephrolithotomy. Clinical data were analyzed retrospectively. RESULTS: The percutaneous renal access was successfully established in 478 patients under ultrasound guidance and immediate phase I lithotripsy was performed, and delayed phase II lithotripsy was performed for 6 patients. Average time required for entire procedure is 73 mins, and average time for stone management is 41 mins. No severe complications occurred. No Residual stone fragment in 438 kidneys, stone free rate was 86.1%. Residual stone fragment was found in 71 kidneys by postoperative KUB and received second PCNL or adjuvant ESWL. CONCLUSION: The combined application of pneumatic and ultrasonic power in PCNL appears to be efficacious and safe for disintegrating and removing renal calculi.