Application of mini-percutaneous nephrolithotomy in the treatmennt of upper urinary calculi(report of 450 Cases)

Objective To assess the efficacy of minimally invasive percutaneous nephrolithotomy(MPCNL) in upper urinary calculi.Methods Data of 450 patients with upper urinary calculi by MPCNL from May 2000 to March 2009 were reviewed and eval-uated.Results The puncture successed by one pricking in 450 case.The operation time was 80±25 minutes in Ⅰ session MPCNL,Total bleeding volume were about 50-140 ml.Among 450 cases,381 cases achieved one-stage MPCNL,61 cases achieved Ⅱsession MPCNL,8 cases achieved Ⅲ session MPCNL complete stone clearance rate was 90.18%;443 case in the establishment of single-channel,7 case in the establishment of double-channel,average hospitalization stay was 8 days,average nephrostomy tube indwelling time was 7.5 days,hemorrhage in 16 case,uncontrollable bleeding after emergence in 1 cases,treatment failure by interventional therapy is in nephrectomy,remaining cured by drug therapy.Urinary extravasation in 2 cases,cured by adjusting the location of nephrostomy fistula.Conclusions MPCNL offers advantages with respect to mini-invasiveness,easy recovery,high stone-free rate,less complication and good effect.