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Building a reliable simulator based assessment suite of MIS-performance out of basic Lapsim tasks

Lenders, L.B.L. (2017) Building a reliable simulator based assessment suite of MIS-performance out of basic Lapsim tasks.

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Abstract:Objectives: The learning of Minimal Invasive Surgery (MIS) is paired with difficulties. Due to its difference with normal surgery, MIS is seen as a better way to operate, although slightly more dangerous. These risks seem to be more than only ergonomic or cognitive factors. Previous research has mainly focused on finding cognitive predictors of future laparoscopic skill. This study proposes a new model called the Resemblance Spectrum that could be used to explain why the previous research has been looking at the wrong place. Through the use of individual learning curves this research tries to find out if we can find more predictable results using simulators. Methods: 40 participants enrolled in this study. All participants performed a set number of repetitions of two innate ability tasks, called PicSOr (35 repetitions) and Map planning (2*10 problems in 3 minutes), and two dexterity tasks called Mirror Drawing and Origami (both 20 repetitions each). Next to this they at least did Grasping and Cutting on the LapSim simulator. If interested participants could partake in a second session in which they did two more simulator tasks, namely Clip Applying and Lifting & Grasping. All simulator tasks were repeated 12 times each. For every task, except the innate ability tasks, the time to complete the task (ToT) was measured and used to build individual learning curves. Pearson pairwise correlations between the learning curve parameters were calculated to explore if it is possible to build a reliable assessment suite of only simulator tasks. Results: A Pearson Pairwise Correlation was used to assess the correlation between the maximum performance parameter per task. The correlation were all positive, but varied between r = .16 up to r = .68 . The credibility limits were noted to be fairly large. Discussion: Although the correlations were originally not expected to be so spread out, it seems to be possible to build a reliable simulator only assessment suite for laparoscopic skill. as the correlations are expected to be spread out due to different underlying factors playing a role in the simulator tasks. For future research it is suggested to look at more simulator tasks, but also task to full procedure validation is still needed to prove the last links in the Resemblance Spectrum.
Item Type:Essay (Bachelor)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:44 medicine, 77 psychology
Programme:Psychology BSc (56604)
Link to this item:http://purl.utwente.nl/essays/72800
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