Abstract

Complex skills, such as ureteroscopy and stone extraction, are increasingly taught to novice urology trainees using bench models in surgical skills laboratories. We determined whether hands-on training improved the performance of novices more than those taught only by a didactic session and whether there was a difference in the performance of subjects taught on a low versus a high fidelity model. We randomized 40 final year medical students to a didactic session or 1 of 2 hands-on training groups involving low or high fidelity bench model practice. Training sessions were supervised by experienced endourologists. Testing involved removal of a mid ureteral stone using a semirigid ureteroscope and a basket. Blinded examiners tested subjects before and after training. Performance was measured by a global rating scale, checklist, pass rating and time needed to complete the task. There was a significant effect of hands-on training on endourological performance (p <0.01). With respect to bench model fidelity the low fidelity group did significantly better than the didactic group (p <0.05). However, no significant difference was found between the high and low fidelity groups (p >0.05). The low fidelity model cost Canadian $20 to produce, while the high fidelity model cost Canadian $3,700 to purchase. Hands-on training using bench models can be successful for teaching novices complex endourological skills. A low fidelity bench model is a more cost-effective means of teaching ureteroscopic skills to novices than a high fidelity model.

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