Abstract

ObjectivesTo present an ex-vivo bovine model for retrograde intrarenal surgery (RIRS) training. Materials and MethodsThe model was specifically developed for a pre-congress course organized as part of the National Pediatric Urology Congress. The course involved a two-day online theoretical segment followed by hands-on training. Bovine kidneys were chosen for their anatomical resemblance to human kidneys. The kidneys were sourced from a local slaughterhouse, ensuring the intactness of the pelvis, ureters, and perirenal fat. A Modified Larssen solution was used for tissue preservation. The tissue was positioned within a cardboard box, with specific preparation techniques to ensure realism. During the hands-on training, participants utilized a flexible ureterorenoscope for practice. After the course, participants completed an 18-question survey assessing the model and training experience. Results24 participants completed the training and survey. Four out of eight procured kidneys were suitable. The model's cost was 18 euros. 87.5% of participants reported increased RIRS confidence. Those with prior course experience rated the model's anatomical resemblance higher (p=0.016). No significant difference was observed in feedback on the model's durability or tactile feedback based on prior experience (p>0.05). ConclusionThe ex-vivo bovine model provides a promising alternative for RIRS training. While further studies are needed to validate its widespread application, initial feedback suggests it offers a balance between cost-effectiveness and realistic training experience.

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