MicrosimUC: Validation of a Low-Cost, Portable, Do-It-Yourself Microsurgery Training Kit

Background Repetitive training is essential for microsurgical performance. This study aimed to compare the improvement in basic microsurgical skills using two learning methods: stationary microsurgical course with tutor supervision and self-learning based on digital instructional materials. We hypothesized that video-based training provides noninferior improvement in basic microsurgical skills. Methods In this prospective study, 80 participants with no prior microsurgical experience were randomly divided into two groups: the control group, trained under the supervision of a microsurgical tutor, and the intervention group, where knowledge was based on commonly available online instructional videos without tutor supervision. Three blinded expert microsurgeons evaluated the improvement in basic microsurgical skills in both groups. The evaluation included an end-to-end anastomosis test using the Ten-Point Microsurgical Anastomosis Rating Scale (MARS10) and a six-stitch test on a latex glove. Statistically significant differences between groups were identified using standard noninferiority analysis, chi-square, and t-tests. Results Seventy-seven participants completed the course. Baseline test scores did not differ significantly between groups. After the 4-day microsurgical course, both groups showed statistically significant improvement in microsurgical skills measured using the MARS10. The performed tests showed that data for self-learning using digital resources provides noninferior data for course with surpervision on the initial stage of microsurgical training (7.84; standard deviation [SD], 1.92; 95% confidence interval [CI], 7.25–8.44) to (7.72; SD, 2.09; 95% CI, 7.07–8.36). Conclusion Video-based microsurgical training on its initial step provides noninferior improvement in microsurgical skills to training with a dedicated instructor.

Section: Discussionmentioning

confidence: 99%

Video-Based Microsurgical Education versus Stationary Basic Microsurgical Course: A Noninferiority Randomized Controlled Study

Dąbrowski

Stogowski

et al. 2022

“…These models do not depend on use of live or cadaveric tissue and are cost-effective 20 . Existing training curricula and programs rely on the use of live or cadaveric animals for evaluation of anastomosis 12,14,15,22,[28][29][30]37,39,47 . Reduction in use or even elimination of animals in microsurgical…”

Section: Discussionmentioning

confidence: 99%

“…Recent developments in microsurgical simulation and education even eliminate the use of a standard operating room microscope and instead incorporate a portable binocular microscope or monocular smartphone technology with video recording and feedback. [35][36][37] Some curricula rely on progression of skills based on learner postgraduate year (PGY), but reported outcomes are often not related to PGY level. 12 The International Microsurgery Simulation Society consensus statement in 2020 emphasized the importance of nonbiologic models for instruction and need for objective assessment of trainees.…”

mentioning

confidence: 99%

Fundamentals of Microsurgery: A Novel Simulation Curriculum Based on Validated Laparoscopic Education Approaches

Chauhan

Ingersol

Wooden

et al. 2022

Background: Microsurgical techniques have a steep learning curve. We adapted validated surgical approaches to develop a novel, competency-based microsurgical simulation curriculum called Fundamentals of Microsurgery (FMS). The purpose of this study is to present our experience with FMS and quantify the effect of the curriculum on resident performance in the operating room. Methods: Trainees underwent the FMS curriculum requiring task progression: 1) rubber band transfer, 2) coupler tine grasping, 3) glove laceration repair, 4) synthetic vessel anastomosis, and 5) vessel anastomosis in a deep cavity. Resident anastomoses were also evaluated in the operative room with the Stanford Microsurgery and Resident Training (SMaRT) tool to evaluate technical performance. The National Aeronautics and Space Administration Task Load Index (NASA-TLX) and Short Form Spielberger State-Trait Anxiety Inventory (STAI-6) quantified learner anxiety and workload. Results: A total of 62 anastomoses were performed by residents in the operating room during patient care. Higher FMS task completion showed an increased mean SMaRT score (p = 0.05), and a lower mean STAI-6 score (performance anxiety) (p = 0.03). Regression analysis demonstrated residents with higher SMaRT score had lower NASA-TLX score (mental workload) (p < 0.01) and STAI-6 scores (p < 0.01). Conclusion: A novel microsurgical simulation program FMS was implemented. We found progression of trainees through the program translated to better technique (higher SMaRT scores) in the operating room and lower performance anxiety on STAI-6 surveys. This suggests that the FMS curriculum improves proficiency in basic microsurgical skills, reduces trainee mental workload, anxiety, and improves intraoperative clinical proficiency.

“…The concept of a structured training program was described by Boecker et al to lead to better outcomes of the microsurgeries performed on the patients. 20 Moreover, microsurgical training through a specific training program could be even more accessible or improved if it were combined with other training models described, such as the portable microsurgery training kit validated by Navia et al 21 or the three-dimensional visualization system proposed by Wang et al 22 Nevertheless, the presence of an expert microsurgeon that guides the students through the microsurgery skills acquisition process represents a major benefit in the learning curve of trainees and it is linked with a much higher quality of their techniques, regardless of the training model. 23 Our trial results suggest that training on one live rat every 8 weeks and following a training program in a dedicated microsurgical center is noninferior to training on a live rat every 4 or 6 weeks.…”

Section: Discussionmentioning

confidence: 99%

Reduction of the Number of Live Animals Used for Microsurgical Skill Acquisition: An Experimental Randomized Noninferiority Trial

Eșanu

Stoia

Dindelegan

et al. 2022

Background Live animals have been used for decades as one of the many training models for developing surgical skills. Microsurgery in particular relies on training for skill acquisition and maintenance, using live animal models, especially rats (murine models). Efforts are underway to reduce the number of rats sacrificed to achieve this objective. Methods A group of students with minimal microsurgical experience, after having gone through a basic microsurgical course, were randomly split into three equal groups, all three groups following a 24-week standard training program based on low- and medium-fidelity training models with standardized murine training days. In addition to the standard training regimen, each participant performed supplementary training on live rats every 4, 6, or 8 weeks. According to the training program, the procedures have been performed on chicken legs, flower petals, and rats, each procedure being blindly assessed and evaluated using validated models and scales. The primary evaluated outcome was the Stanford Microsurgery and Resident Training (SMaRT) scale result of the final rat anastomosis performed by each group, for which the tested hypothesis was one of noninferiority. The secondary outcomes were represented by the final rat anastomosis time, final chicken leg anastomosis result and time, and the final petal score. Results After the 24th week, no differences were observed between the three groups regarding their microsurgical skills, as measured by the aforementioned surgical outcomes. All participants improved significantly during the study (mean [standard deviation] 19 ± 4 points on the SMaRT scale), with no significant differences between the groups, p < 0.001 for noninferiority. Conclusion A training regimen based on low- and moderate-fidelity models, with the addition of training on a live rat every 8 weeks was noninferior to a training regimen that used a live rat every 6 weeks and also noninferior to a training regimen that used a live rat every 4 weeks.