ing the ureter, without additional trau- matic dilation of the ureter. UP-03.079 Safety and Efficiency of a Novel Endoscope to Bladder Stone Li A, Lu H, Liu S, Zhang F, Qian X, Wang H Dept. of Urology, Yangpu District Central Hospital, Shanghai, China Introduction and Objective: To recom- mend a novel Endoscope, AH-1 Stone Re- moval System (SRS) and evaluate the safety and clinical efficiency of SRS com- bined TURP to treat bladder stone with BPH. Methods: Between January 2008 to July 2010, 37 cases of bladder stones with BPH were treated by SRS + TURP. They were compared with 59 cases treated by cystolithotripsy with ureteroscope + TURP and cystolithotomy + TURP. All patients were divided into five groups de- pending on stone size (2cm) and stone removal methods. Results: In SRS A (n=19), stone size was 1.360.33cm, total operating time was 47.7013.85min and stone removal time was 6.324.44min, and in ureteroscope A (n=26), stone size was 0.940.43cm (P 0.001), total operating time was 68.8931.15 (P 0.01), and stone re- moval time was 33.5628.76 (P 0.01). In SRS B (n=18), 6 (33.33%) cases were multiple stones, stone size was 3.491.32cm, total operating time was 71.0725.57min and stone removal time was 32.8824.21min, and in ureteroscope B (n=14), 2 (14.29%) cases were multiple stones, stone size was 2.540.46cm (P 0.02), total operating time was 77.0124.09min and stone removal time was 40.3523.78min. SRS B was com- pared with cystolithotomy (n=19), the differences of total operating time (P 0.01) and stone removal time (P 0.01) were statistically significant. Three cases (21.42%) in ureteroscope B were con- verted to an open procedure; there was 1 case for bladder perforation due to muco- sal damage and 2 cases for excessive re- sidual fragments to be removed. Further- more, urethral stricture developed in 2 other cases 3 month postoperatively. No significant complication was found in SRS groups. Conclusion: SRS is a new type endo- scope with multiple functions to treat bladder stone. Our study shows that mul- tiple functions such as fixing stone, crush- ing stone, automatically collecting stone, extracting stone, washing out stone and continuous-flow can be expected when it is applied in cystolithotripsy. Especially, it can be used to automatically collect stone by swirling flow and extract more stones by jaw through sheath at one time, which can effectively reduce stone removal time and surgical damage to urethral mucosa. SRS combined with TURP is an effective and rapid modality to treat bladder stones with BPH. This minimally invasive endo- scopic procedure appears to be safe and efficient, and which could expand the range of operating indication on cysto- lithotripsy. UP-03.080 Digital Semirigid Ureteroscopy: A Single Center Experience of 100 Cases Geavlete P, Multescu R, Georgescu D, Geavlete B “Saint John” Emergency Clinical Hospital, Bucharest, Romania Introduction and Objectives: Introduc- tion of digital endoscopes provided a new standard for image quality in endourology. Our study aimed to analyze the perfor- mances of digital ureteroscopy. Materials and Methods: We evaluated 100 digital semirigid ureteroscopies for ureteral lithiasis performed in our depart- ment: 76 as primary interventions (Group I) and 24 after previous JJ ureteral stent- ing (Group II). An Olympus Endoeye semirigid digital ureteroscope was used in all cases. The maneuverability and image quality were noted by the same urologist with 1 to 5 points. A similar analysis was performed during 70 ureteroscopies using a Storz conventional ureteroscope (Group III). Results: The success rate was 92.1% (70/76 cases) in Group I, 100% (24/24 cases) in Group II and 97.1% (69/70 cases) in Group III. In 6 cases of Group I, the larger diameter of the digital uretero- scope (12F at the tip) impeded the calcu- lus approach, thus imposing conventional semirigid ureteroscopy. In 2 cases of Group III, the pyelocaliceal migration of a large stone fragment imposed flexible ure- teroscopic approach. The scores noted in the 3 groups were 4.49, 4.51 and 3.52 for visibility and 3.93, 4.38 and 4.55 for ma- neuverability. Conclusions: The new digital uretero- scopes offer an image of superior quality by comparison to the conventional ones. Although the large caliber at the tip of the semirigid video-ureteroscopes may reduce their maneuverability and accessibility, the method proved to be safe and efficient. UP-03.081 Transureteral Ureterolithotripsy of Ureteral Calculi: Which Is Best, Pneumatic or Holmium Laser Technique? Razaghi M, Razi A, Mazlomfard M, Javanmard B, Mohamadi R Laser Application In Medical Sciences Research Center, Tehran, Iran Introduction and Objective: Urinary calculi are important problem in urology. Ureteral stones can cause obstructive uropathy and subsequent deterioration of renal function. Extracorporeal shockwave lithotripsy (SWL) and rigid and flexible ureteroscopy have greatly improved the urologist’s ability to treat ureteral calculi. However, the success rate of SWL for im- pacted ureteral calculi is reportedly low. For stone fragmentation, a variety of litho- tripters can be used, including ultrasonic, electrohydraulic, pneumatic and laser lithotriptors. Pneumatic lithotripsy and holmium:YAG lithotripsy have reported favorable outcomes. The Swiss Lithoclast developed in Lausanne, Switzerland, frag- ments the stones by oscillary movements of metal probe against the stones like a jack hammer. The thermal effect pro- duced by holmium:YAG laser pulses are due to formation of plasma bubble. This bubble at the tip of the fiber connected to the holmium:YAG laser makes it possible to work on stones and soft tissues. Our aim was compare two types of litho- tripter: holmium: YAG laser and pneu- matic one in transurethral ureterolitho- tripsy (TUL) for management of ureteral calculi 1cm. Materials and Methods: From 2007 to 2009, the patients with ureteral stones larger than 1cm that had come to our clinic, after having a negative urine cul- ture, and matching with exclusion criteria that were uncorrectable coagulopathy, sever skeletal deformities, and failed first procedure. 112 patients with ureteral cal- culi more than 1cm were selected in ran- domized order for pneumatic or holmium: YAG laser transurethral ureterolithotripsy (56 patients in each group). For uretero- scopic laser lithotripsy a holmium: YAG laser which operates at a wavelength of 2100 nm was used. Frequency was usually set between 5 and 10Hz at a power of 10 to 15W. Swiss lithoclast with 1mm probe was used to break the stones in the other group. Stones were fragmented by using single or multiple fire technique at a sin- gle sitting. Double-J was used accordingly. Ultrasonography and intravenous urogra- phy (IVU) were performed for all patients before surgery. Kidney, ureter, and blad- UNMODERATED POSTER SESSIONS UROLOGY 78 (Supplement 3A), September 2011 S369