Abstract
The research address characterization of setup skill of clinical equipment with considerations of operator’s physio-psychological activities. The focus of this study is to demonstrate physio-psychological indices on the achievement of setting a hemodialysis blood circuit. The circuit is clinically standardized but complex permitting varieties on their degrees of experiences and practices individually. Our measurement system consisted of the electrocardiogram, electrodermal activity (EDA) monitoring on a palm, and synchronized video recording. Thirteen students participated in the experiment, who belong to a clinical engineering course in training for hemodialysis equipment and procedures. Time and frequency domain analysis of the RR intervals by short time Fourier transform (STFT) and Lorentz plot descriptors indicated activities of the sympathetic nerve, and EDA responds implicit emotional arousals during the assembly task. Results suggested a possibility for characterizing the task revealing a sign of attention or confusions on particular events. The proposed approach expects to contribute improvement of an operator's practicing with efficient feedback.
