CBL联合3D打印教学在骶骨肿瘤临床教学中的应用研究

Application of CBL combined with 3D printing teaching in clinical teaching of sacral tumors

目的探讨以案例为基础的学习(case-based learning,CBL)教学模式联合3D打印在骶骨肿瘤临床教学中的应用效果。方法将2017年至2018年在本院学习的本科实习生和住培学员共108名,按在院学习时间分为CBL教学组(n=53)和CBL联合3D打印教学组(n=55)。其中联合教学组在CBL的基础上,使用计算机断层扫描(computer tomography,CT)数据重建并打印出骶骨肿瘤的3D模型,对肿瘤周围组织的侵犯情况进行术前教学。分别评估两组的考试成绩,学生进行自我鉴定问卷调查(包括学习兴趣、自学能力、团队合作能力、综合分析能力和临床思维能力)。应用stata 14.0对组间数据采用t检验(单侧)。结果CBL教学组学员考核成绩(75.90±6.70),低于CBL联合3D打印教学组(83.60±7.40)。CBL联合3D打印教学组在学习兴趣、自学能力、综合分析能力和临床思维能力等方面优于CBL模式教学组,差异有统计学意义(P<0.001)。在团队合作能力方面,两组差异无统计学意义(P>0.05)。结论结合3D打印的CBL教学在本科实习生和住培学员教学中,能提升学习成绩,提高学生的学习兴趣和对骶骨肿瘤的临床思维能力。

Objective To explore the application effect of case-based learning(CBL),teaching mode combined with 3D printing in clinical teaching of sacral tumors.Methods A total of 108 undergraduate interns and standardized residency training students who studied in our hospital from 2017 to 2018 were divided into the CBL teaching group(n=53)and the CBL combined with 3D printing teaching group(n=55)according to their study time.The combined teaching group used computer tomography(CT)data to reconstruct and print out a 3D model of sacral tumors based on CBL,and performed preoperative teaching on the invasion of the surrounding tissues of the tumor.The scores of the students in the two groups were evaluated respectively,and the students were surveyed by self-identification questionnaire(learning interest,self-learning ability,teamwork ability,comprehensive analysis ability and clinical thinking ability).The t-test(one-sided)was used for comparison between groups using stata 14.0.Results The score of CBL teaching group(75.90±6.70)was lower than that of CBL combined with 3D printing teaching group(83.60±7.40).In terms of critical thinking ability evaluation,self-learning ability,learning interest,comprehensive analysis ability and clinical thinking ability,the CBL combined 3D printing teaching group was superior to the CBL teaching group,and the difference was statistically significant(P<0.001).In terms of teamwork ability,there was no statistical difference between the two groups.Conclusion The CBL teaching mode combined with 3D printing can improve academic performance,students'learning interest and clinical thinking ability of sacral tumors in the teaching of undergraduate interns and standardized residency training students.