Treatment of complicated renal calculi under percutaneous nephrolithotomy with ultrasonic and pneumatic lithotripter

Objective:To evaluate the clinical efficacy of percutaneous nephrolithotomy with ultrasonic and pneumatic lithotripter (EMS III) for the renal calculi.Methods:Thirty-six patients with complicated renal calculi received percutaneous nephrolithotomy preformed by ultrasonic and pneumatic lithotripter. Of these 36 cases, 28 male and 8 female, mean diameter of calculi is (2.7) cm (range (1.5)～(6.0) cm), huge staghorn calculi in 12 cases.Results:The stones were cleared off 34 out of 36, one section in 32 and two sections in 2. There two patients were treated by ESWL due to residual stones. Average operative duration was 58 minutes. No obvious complications were observed. Intraoperative blood loss was 50 ml.Conclusions:Percutaneous nephrolithotomy with ultrasonic and pneumatic lithotripter(EMS) for complicated renal calculi has the advantages of mini-invasion, less operative duration, rapid recovery, safety and effectiveness. As a result, open operation could be avoided in most patients.