Instructor Feedback Versus No Instructor Feedback on Performance in a Laparoscopic Virtual Reality Simulator A Randomized Trial
Instructor Feedback Versus No Instructor Feedback on Performance in a Laparoscopic Virtual Reality Simulator A Randomized Trial
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DOI：
10.1097/sla.0b013e31827eee6e
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发表时间：
2013-05-01
影响因子：
9
通讯作者：
Sorensen, Jette Led
中科院分区：
文献类型：
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作者：
Strandbygaard, Jeanett;Bjerrum, Flemming;Sorensen, Jette Led
目标：为了调查教练反馈与没有教练反馈的影响时，培训一个复杂的操作任务腹腔镜虚拟现实simulator.Background：模拟器现在被广泛接受的培训工具，但有多少反馈是必要的，这是有用的可持续implementation.Methods：一个随机试验符合CONSORT声明。所有参与者都必须达到虚拟现实模拟器上复杂操作任务的预定义熟练程度。干预组接受标准化的教师反馈最多3次。对照组没有收到教师的反馈。参与者是没有腹腔镜经验的高年级医学生（n = 99）。结果的措施是时间，重复和性能得分达到预定义的熟练程度。结果：干预组手术时间（分钟）和重复次数减少（162 vs 342分钟; P < 0.005）和（29 vs 65次; P < 0.005）。对照组的表现得分高于干预组（57% vs 49%; P = 0.004）。男性使用的时间（分钟）比女性少（P = 0.037），但没有观察到重复的性别差异（P = 0.20）。干预组的参与者有较高的自我感知手术技能后的审判（P = 0.011）。结论：教师的反馈提高了效率时，培训一个复杂的操作任务的虚拟现实模拟器;时间和重复使用，以达到预定义的熟练程度显着减少组，收到教师的反馈与对照组相比。试验注册号：NCT 01497782。
Objective: To investigate the impact of instructor feedback versus no instructor feedback when training a complex operational task on a laparoscopic virtual reality simulator.Background: Simulators are now widely accepted as a training tool, but there is insufficient knowledge about how much feedback is necessary, which is useful for sustainable implementation.Methods: A randomized trial complying with CONSORT Statement. All participants had to reach a predefined proficiency level for a complex operational task on a virtual reality simulator. The intervention group received standardized instructor feedback a maximum of 3 times. The control group did not receive instructor feedback. Participants were senior medical students without prior laparoscopic experience (n = 99). Outcome measures were time, repetitions, and performance score to reach a predefined proficiency level. Furthermore, influence of sex and perception of own surgical skills were examined.Results: Time (in minutes) and repetitions were reduced in the intervention group (162 vs 342 minutes; P < 0.005) and (29 vs 65 repetitions; P < 0.005). The control group achieved a higher performance score than the intervention group (57% vs 49%; P = 0.004). Men used less time (in minutes) than women (P = 0.037), but no sex difference was observed for repetitions (P = 0.20). Participants in the intervention group had higher self-perception regarding surgical skills after the trial (P = 0.011).Conclusions: Instructor feedback increases the efficiency when training a complex operational task on a virtual reality simulator; time and repetitions used to achieve a predefined proficiency level were significantly reduced in the group that received instructor feedback compared with the control group. Trial registration number: NCT01497782.