Combined pneumatic and ultrasound lithotripsy in percutaneous nephrolithomy for complicated renal calculi

Objective To investigate the safety and efficacy of combined pneumatic and ultrasound lithotripsy for complicated renal calculi by B-type ultrasound guidance in percutaneous nephrolithomy.Methods Two hundred and eighty nine cases(312 sides),who were treated by percutaneous nephrolithotripsy of using pneumatic and ultrasonic system(EMS Ⅳ),were reviewed retrospectively.Results Two hundred and seventy six sides were performed on stage Ⅰ.The mean time of the operation was 76 minutes.The average blood loss was 75ml.With the treatment of ESWL,the first calculi clearance rate was 84.3%.36 sides were performed on stage Ⅱ.There were one cases with colon injure,13 patients with severe hemorrhage after operation while 3 cases were cured by selectivity thrombosis of renal artery;63 patients had severe fever after operation and 3 cases had severe infection.There were no nephrectomy,transferring to open operation and renal dysfunction.The average lengths of stay after operation were 8 days.Conclusion The combined pneumatic and ultrasound lithotripsy in percutaneous nephrolithomy by B-type ultrasound guidance for complicated renal calculi have the advantage of small wound,rapid recovery,shorter hospital time and higher calculi clearance.It is a better choice for the treatment of complicated renal calculi.