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Robotic Urethrovesical Anastamotic Simulator: Improvements to a Validated Model.
Scott V. Wiener, MD1, Steven Shichman, MD2, Ryan Dorin, MD2.
1University of Connecticut, Farmington, CT, USA, 2Hartford Hospital, Hartford, CT, USA.

Robotic Urethrovesical Anastamotic Simulator: Improvements to a Validated Model.
Background
Resident training is shifting with the widespread use of robotics. Validated simulation tools must continually be improved in order to provide the most realistic training possible. Here we assess content and face validity of a modification to a urethrovesicle anastamotic (UVA) simulator with established construct validity.
Methods
A UVA simulator was constructed with 1 inch and ½ inch penrose drains, surgical tape, a towel, and a 20Fr council tip catheter. This simulator previously underwent face, content, and construct validity by our group. The modified simulator added a pubic arch (bisected specimen cup), and periurethral tissue (gauze and surgical tape wrapped around the ½ inch penrose). Residents completed both the unmodified, and subsequently the modified version of our UVA with a running Van Velthoven anastamosis using the daVinci Si robot. Participants completed a 5 point Likert scale survey assessing the usefulness, anatomic realism, and surgical steps for each model. Scores were compared using t-tests.
Results
7 residents completed both models. Excluding the author, 5 completed the post-test survey. The mean anatomic realism was rated 3.2 vs 4.4 (p=0.035), surgical steps were rated 3.4 vs 4.4 (p=0.017), and usefulness was rated 3.8 vs 4.6 (p=0.008) for the unmodified and modified model respectively.
Conclusions
A simple, low cost, modification to a validated vesicourethral simulator provides significant improvements in usefulness, anatomic realism, and simulation of surgical steps.


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