Alpha Omega Alpha Honor Medical Society

2010 Research Abstract

Randomized Controlled Trial of Laparoscopic Partial Tasks with a Reversed Camera View Versus Reversed-View Orientation Drills

Investigator: Samaan Sattarzadeh, University of Nevada School of Medicine
Co-investigator: A. Mohsin, University of Nevada School of Medicine
Mentor: Shawn Tsuda, MD, University of Nevada School of Medicine

Introduction: Prior studies have shown reversed camera operating to be significantly more cumbersome than operating with a forward camera orientation. The aim of this study is to identify laparoscopic training drills that best improve performance when faced with a reversed camera orientation.

Methods: Thirty medical students were randomly divided into three study arms. The experimental arm only practiced conducting the peg drill with the camera in the 180 degree reversed orientation. The intervention arm practiced tracing standardized geometric shapes with the camera in the reversed orientation. The control arm performed the peg transfer with the camera in the forward direction. Times were measured and recorded at the completion of each designated drill. Participants in each group practiced their designated drill for two, three, six, and nine repetitions before being tested by conducting the peg drill in one direction in the reversed camera orientation.

Results: Significant differences in time were observed between the reversed camera peg drill group and the control group across all repetitions. The largest difference was after six repetitions (134.63 +/- 43.27 seconds), but were still significant after nine repetitions (96.46 +/- 37.449 seconds). Significant time decreases in performing the peg transfer with a reversed camera view were observed between participants practicing the reversed camera peg drill versus the group practicing only instrument orientation drills with the reversed view for all repetitions (p<0.05), but not between the reversed camera partial task group and the control group.

Conclusion: Practicing reversed camera drills conferred improvement in performance of a validated laparoscopic task, with the greatest improvement after six repetitions. Warm-up laparoscopic drills designed to duplicate real-world movements with a reversed camera orientation may be warranted to improve performance time compared to simple, in vivo directional orientation prior to the activity, or practicing with a forward camera orientation.

Updated on June 8, 2011.


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