MP22-19 PERI-OPERATIVE OUTCOMES OF PERCUTANEOUS STONE SURGERY IN PATIENTS WITH URINARY DIVERSIONS.

volume (V) of each stone, calculated by a special software of CT or by approximation calculation by urologists. After insertion of a ureteral access sheath, Videoscope (FlexXC Storz, Germany) was introduced into the sheath manually. Then the scope was connected to the Roboflex in sterile condition and the time for this procedure had been recorded. Ergonomic chair of Roboflex can be adjusted in a comfortable position, according to the user. Deflection can be performed by manipulating the right handle similar to standart fURS. Precise deflection provided from the thumb wheel on the console. The rotation and forward and backward movement can be controlled by left handle. Fragments smaller than four fold of the laser fiber (means approx. 1 mm) were left for spontaneous passage. The fragmentation time recorded and the Fragmented Volume /per minute was calculated. At the end of the procedures, ureteral j stents were placed whenever indicated. RESULTS: Mean Stone Volume was 1620 cubic mm (98-10600 cubic mm). Mean connection time to the Roboflex was 2 min. Stones were located in upper, middle and lower calices, and renal pelvis. Fragmentation Efficiency (FE) evaluated by fragmentation volume/per minute was 36 and 25 cubic mm /min for manual and robotic fURS respectively, but it increased to 33 cubic mm/min after 42 case. With some improvements of Roboflex FE was increased to 53 cubic mm/min. Stone-free status including fragments up to 2mm as controlled with xray on day 1 was achieved in all cases. We analyzed the CT controls after 1st and 3rd months. Fever not exceeding one day was seen in 2 patients. CONCLUSIONS: Robot assisted fURS using Roboflex has been detected as a safe and efficient treatment method. It offers performing the procedure out of radiation exposure area while sitting. The operative results are also acceptable compared to the literature of manual fURS stone treatment.