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Mannequin Simulation Improves the Confidence of Medical Students Performing Tube Thoracostomy: A Prospective, Controlled Trial

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This study was undertaken to determine the educational benefits of mannequin simulation for performance of tube thoracostomy in a porcine model by medical students. Thirty medical students were randomized into two groups; the first performed tube thoracostomy on a mannequin simulator and then a porcine model; the second used only the porcine model. Performance measures included completion of subtasks, time to perform the procedure, a global score assigned by faculty raters, and a self-evaluation survey. Subtask completion rate was similar in both groups (P > 0.05). Mean time to perform the procedure was 9.8 minutes (±0.9, simulator), and 9.3 minutes (± 1.0, nonsimulator, P > 0.05). Global scores were 12.3 (±1.3, simulator) and 11.0 (±1.4, nonsimulator, P > 0.05). Self-evaluation of confidence (1= “very”, 7= “not at all”) showed the simulator group was significantly more confident (3.4 ± 0.42) than the nonsimulator group (4.7 ± 0.49, P < 0.05). All students met basic competencies to perform tube thoracostomy. The simulator group felt significantly more confident to subsequently perform the procedure on a patient, whereas performance was not statistically significantly different for the two groups. Further trials may be needed to delineate the optimal role for these simulators in teaching tube thoracostomy.
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Document Type: Research Article

Affiliations: Center for Experimental Medicine, Jichi Medical University, Tochigi Japan

Publication date: January 1, 2010

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