Ureteroscopic pneumatic lithotripsy for acute renal failure due to upper urinary calculous obstruction / 中国微创外科杂志

ABSTRACT

443) ?mol/L) due to upper urinary calculous obstruction,urgently treated by pneumatic lithotripsy(EMS,Switzerland) under ureteroscopy,from August 2002 to April 2006 in this hospital.After stone fragmentation and removal,an indwelling double-J stent was placed into the ureter at the same time.Results The continuity of the ureter was restored after one session of lithotripsy in all the 9 cases(14 sides).The ureteral calculi were thoroughly removed on one session in 7 cases(12 sides).Few residual stones were found in the renal pelvis in 2 cases(2 sides),in one of which the stones were spontaneously expelled after oral medication,and in another,after extracorporeal shock wave lithotripsy(ESWL).No severe complications happened,such as ureteral avulsion,rupture,or perforation.Concentrations of serum creatine were decreased to normal levels within 3~7 days after operation in all the 9 cases.The gross blood urine disappeared in 1~4 days postoperatively.The patients were discharged from the hospital after 3~7 days (mean,5 days) after operation.The double-J catheter was removed at 1~2 months postoperatively.Follow-up examinations in 7 cases for 2~30 months(mean,14 months) found normal levels of serum creatine and no recurrent urinary stones under B-ultrasonography or X-ray radiography.Conclusions Ureteroscopic pneumatic lithotripsy in the treatment of acute renal failure due to upper urinary calculous obstruction is an effective treatment with short operation time,safety,and minimal trauma.By using this procedure,both sides of ureteral stones can be removed on one session.