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Experience in Flexible Bronchoscopy: Exploring the Motor Skill Performance of Novices, Intermediates, and Experts

Pertenbreiter, Marcel (2022) Experience in Flexible Bronchoscopy: Exploring the Motor Skill Performance of Novices, Intermediates, and Experts.

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Abstract:Introduction: Deciding when a doctor can perform bronchoscopy on patients without assistance and supervision is done through the assessment of experts. Recruiting experienced bronchoscopist is costly. Besides, the quality of evaluation differs between experts and might be subjective. The first goal of the current study is to find behavioural markers for level of expertise which can distinguish between expert, intermediate, and novice bronchoscopists. Since successful bronchoscopy mainly depends on the handling of the bronchoscope, the study investigated the movement of the hand, forearm, and upper arm for each proficiency. The second aim of this study was to use the behavioural characteristics to model learning curves, which could then be applied to predict expertise based on the amount of training. Method: 30 participants were involved in this study. The study made use of a between-subject design investigating the difference between experts, intermediates, and novices. Each participant completed two tasks on a bronchoscopy simulator while wearing a motion tracking suit to record their movement. Movement was measured in the form of acceleration and velocity. In addition, performance measures, including the completion time and the number of mistakes, were obtained from the simulator. Results: The estimation of learning curves was unsuccessful. The focus was on exploring qualitative differences of movement and performance. Therefore, generalised linear regression models were used. Intermediates reported the highest values for acceleration and velocity followed by the experts and novices. The experts have the lowest completion time for the first task despite making more mistakes than the intermediates. The experts mainly move their hand and arm from left to right with constant speed and accelerate forwards and backwards. For the intermediates it is the other way around. In line with the expectations, the novices took the longest to complete the tasks and made the most errors. Discussion: We gave justification on why experts move slower than intermediates. Next, the type of movement that characterises an expert bronchoscopist was described more thoroughly. The novices did not show any sign of exponential learning. Thus, their movement has been analysed by investigating the factors that could inhibit beginner bronchoscopist from making learning progress
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology MSc (66604)
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