LAUSR

INTRODUCTION This single centre experience describes the indications, novel technique and outcomes of performing 14 Fr Super-mini Percutaneous Cystolitholapaxy (14 Fr-SMPCCL). METHODS Cases between 2019 and 2022 were retrospectively identified with surgical outcomes recorded. Using percutaneous access to the bladder, an endoscope was inserted through the ClearPetra 14Fr Super-mini sheath and laser lithotripsy completed with stone fragments suctioned out. RESULTS 16 cases were included in the study and all patients were adults. Average conglomerate stone size was 28.1mm (range = 10 to 50mm). Average operative time was 60.0 mins (range = 23 to 110 mins). Visual stone-free rate was 91.7%, radiological stone-free rate was 81.3% and average post-operative length of stay was 1 day. One patient developed urosepsis post-operatively and there were no other complications. CONCLUSION The novel technique of 14Fr-SMPCCL is safe and feasible for treating large burdens of bladder stones with a conglomerate size of approximately 2.5 to 5cm. Active suction allows for efficient removal of stone fragments.