Zhao Sherry, Francis Louise, Todor Dorin, Fields Emma C
Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA.
Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA.
Brachytherapy. 2018 Jul-Aug;17(4):653-659. doi: 10.1016/j.brachy.2018.03.001. Epub 2018 Apr 26.
Although brachytherapy increases the local control rate for cervical cancer, there has been a progressive decline in its use. Furthermore, the training among residency programs for gynecologic brachytherapy varies considerably, with some residents receiving little to no training. This trend is especially concerning given the association between poor applicator placement and decline in local control. Considering the success of proficiency-based training in other procedural specialties, we developed and implemented a proficiency-based cervical brachytherapy training curriculum for our residents.
Each resident placed tandem and ovoid applicators with attending guidance and again alone 2 weeks later using a pelvic model that was modified to allow for cervical brachytherapy. Plain films were taken of the pelvic model, and applicator placement quality was evaluated. Other evaluated metrics included retention of key procedural details, the time taken for each procedure and presession and postsession surveys to assess confidence.
During the initial session, residents on average met 4.5 of 5 placement criteria, which improved to 5 the second session. On average, residents were able to remember 7.6 of the 8 key procedural steps. Execution time decreased by an average of 10.5%. Resident confidence with the procedure improved dramatically, from 2.6 to 4.6 of 5. Residents who had previously never performed a tandem and ovoid procedure showed greater improvements in these criteria than those who had. All residents strongly agreed that the training was helpful and wanted to participate again the following year.
Residents participating in this simulation training had measurable improvements in the time to perform the procedure, applicator placement quality, and confidence. This curriculum is easy to implement and is of great value for training residents, and would be particularly beneficial in programs with low volume of cervical brachytherapy cases. Simulation programs could also be created for other technically challenging radiation oncology procedures.
尽管近距离放射治疗可提高宫颈癌的局部控制率,但其应用却在逐渐减少。此外,妇科近距离放射治疗在住院医师培训项目中的差异很大,一些住院医师接受的培训很少甚至没有。鉴于施源器放置不当与局部控制率下降之间的关联,这一趋势尤其令人担忧。考虑到基于熟练度的培训在其他程序专业中取得的成功,我们为住院医师开发并实施了基于熟练度的宫颈癌近距离放射治疗培训课程。
每位住院医师在上级医生的指导下放置串联式和卵圆形施源器,两周后再次独自使用经过改良以适应宫颈癌近距离放射治疗的盆腔模型进行放置。对盆腔模型进行X光平片拍摄,并评估施源器放置质量。其他评估指标包括关键程序细节的记忆、每个程序所需时间以及术前和术后调查以评估信心。
在初始阶段,住院医师平均达到5项放置标准中的4.5项,在第二阶段提高到了5项。平均而言,住院医师能够记住8个关键程序步骤中的7.6个。执行时间平均减少了10.5%。住院医师对该程序的信心大幅提高,从5分中的2.6分提高到了4.6分。以前从未进行过串联式和卵圆形程序的住院医师在这些标准上的改善比有经验的住院医师更大。所有住院医师都强烈认为培训很有帮助,并希望次年再次参加。
参与该模拟培训的住院医师在执行程序的时间、施源器放置质量和信心方面都有可衡量的提高。该课程易于实施,对住院医师培训具有很大价值,在宫颈癌近距离放射治疗病例数量较少的项目中尤其有益。也可以为其他技术要求高的放射肿瘤学程序创建模拟程序。