title: [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.
  
  
  CONCLUSIONS
  The combined application of pneumatic and ultrasonic power in PCNL appears to be efficacious and safe for disintegrating and removing renal calculi.
authors.affiliation: Department of Urology, Beijing Chaoyang Hospital, Institute of Urology, Capital University of Medical Sciences, Beijing 100020, China. ljxl@sina.com
authors.forename: Jian-xing
authors.initials: JX
authors.lastname: Li
authors.forename: Yi-nong
authors.initials: YN
authors.lastname: Niu
authors.forename: Xi-quan
authors.initials: XQ
authors.lastname: Tian
authors.forename: Ning
authors.initials: N
authors.lastname: Kang
authors.forename: Xue-ke
authors.initials: XK
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000000981:diagnostic imaging / Q000628:therapy*; D008096:Lithotripsy / Q000379:methods; D008297:Male; D008875:Middle Aged; D009403:Nephrostomy, Percutaneous / Q000379:methods; D012189:Retrospective Studies; D012449:Safety; D014463:Ultrasonography