Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA.
J Vasc Surg. 2012 May;55(5):1515-21. doi: 10.1016/j.jvs.2011.11.060. Epub 2012 Mar 29.
The primary goal of this study was to determine whether exposure to endovascular simulator training increases interest in vascular surgery among medical students. Secondary goals were to determine whether interest in vascular surgery is inversely related to the time after exposure, to identify factors associated with interest, and to identify students' characteristics that positively influence performance metrics.
This was a prospective, randomized, crossover study comprising 80 medical students who were randomized into group A (n = 40) and group B (n = 40). Participants completed a survey of their interest in vascular surgery and attitudinal factors using Vascular Surgery Interest Form (VSIF) before exposure to the simulator (pretest). At 1 month after exposure of group A to the simulator, both groups were tested using VSIF (test). Upon completion of testing, group B was exposed to simulator training, whereas group A received no further training. At 2 months after exposure of group B to the simulator, both groups were posttested using VSIF, which asked the students' level of interest in vascular surgery using a 1 to 10 scale. Performance metrics were recorded during each exposure. Differences among cohort demographics were determined using Pearson χ(2) analysis. Differences in interest were determined with paired sample correlations. Linear regression and analysis of variance were used to correlate VSIF responses with interest and the performance metrics.
Both student cohorts had significant increases in interest after exposure to simulation. In group A, test interest (mean ± standard deviation) was significantly higher than pretest and posttest interests (5.51 ± 1.73 vs 4.00 ± 1.88 vs 4.18 ± 1.82; P < .05). In group B, posttest interest was significantly higher than pretest and test interests (5.62 ± 2.03 vs 3.96 ± 1.61 vs 4.08 ± 1.64; P < .05). The increase in interest was reciprocally related to the time passed since the initial exposure. Resident and attending lifestyle, length of training, radiation concerns, gender identification of a mentor, and personality fit with occupation were not correlated with interest. Sex, medical school year, comfort with endovascular procedures, willingness to work long hours, interest in performing percutaneous procedures, and commitment to surgical career did not affect impact performance metrics.
One exposure of students to endovascular simulator training is associated with an increase in vascular surgery interest. Acquired interest is reciprocally related to the time demonstrating the temporal importance of the exposure.
本研究的主要目的是确定血管内模拟器培训是否会增加医学生对血管外科的兴趣。次要目标是确定对血管外科的兴趣是否与暴露后的时间呈反比关系，确定与兴趣相关的因素，并确定对学生表现有积极影响的特征。
这是一项前瞻性、随机、交叉研究，包括 80 名医学生，他们被随机分为 A 组（n=40）和 B 组（n=40）。参与者在暴露于模拟器之前（预测试）使用血管外科学兴趣表（VSIF）完成对血管外科学的兴趣和态度因素的调查。在 A 组暴露于模拟器 1 个月后，两组均使用 VSIF 进行测试（测试）。测试完成后，B 组接受模拟器培训，而 A 组则不接受进一步培训。在 B 组暴露于模拟器 2 个月后，两组均使用 VSIF 进行后测试，该测试使用 1 到 10 的量表询问学生对血管外科学的兴趣程度。在每次暴露过程中记录表现指标。使用 Pearson χ(2) 分析确定队列人口统计学差异。使用配对样本相关确定兴趣差异。使用线性回归和方差分析将 VSIF 响应与兴趣和表现指标相关联。
两组学生在接触模拟后对兴趣的显著增加。在 A 组中，测试兴趣（平均值±标准差）明显高于预测试和后测试兴趣（5.51±1.73 比 4.00±1.88 比 4.18±1.82；P<.05）。在 B 组中，后测兴趣明显高于前测和测试兴趣（5.62±2.03 比 3.96±1.61 比 4.08±1.64；P<.05）。兴趣的增加与初始暴露后的时间呈反向关系。住院医师和主治医生的生活方式、培训时间、辐射顾虑、导师的性别认同以及与职业的性格契合度与兴趣无关。性别、医学生年级、对血管内手术的舒适度、愿意长时间工作、对经皮手术的兴趣以及对手术职业的承诺不影响表现指标。
学生接触血管内模拟器培训一次即可增加对血管外科学的兴趣。获得的兴趣与暴露时间呈反比关系，这表明暴露时间的重要性。
