Cohen J, Cohen SA, Vora KC, et al. Multicenter, randomized, controlled trial of virtual-reality simulator training in acquisition of competency in colonoscopy

Columbia University, New York, New York, United States
Gastrointestinal Endoscopy (Impact Factor: 5.37). 09/2006; 64(3):361-8. DOI: 10.1016/j.gie.2005.11.062
Source: PubMed


The GI Mentor is a virtual reality simulator that uses force feedback technology to create a realistic training experience.
To define the benefit of training on the GI Mentor on competency acquisition in colonoscopy.
Randomized, controlled, blinded, multicenter trial.
Academic medical centers with accredited gastroenterology training programs.
First-year GI fellows.
Subjects were randomized to receive 10 hours of unsupervised training on the GI Mentor or no simulator experience during the first 8 weeks of fellowship. After this period, both groups began performing real colonoscopies. The first 200 colonoscopies performed by each fellow were graded by proctors to measure technical and cognitive success, and patient comfort level during the procedure.
A mixed-effects model comparison between the 2 groups of objective and subjective competency scores and patient discomfort in the performance of real colonoscopies over time.
Forty-five fellows were randomized from 16 hospitals over 2 years. Fellows in the simulator group had significantly higher objective competency rates during the first 100 cases. A mixed-effects model demonstrated a higher objective competence overall in the simulator group (P < .0001), with the difference between groups being significantly greater during the first 80 cases performed. The median number of cases needed to reach 90% competency was 160 in both groups. The patient comfort level was similar.
Fellows who underwent GI Mentor training performed significantly better during the early phase of real colonoscopy training.

11 Reads
  • Source
    • "However , transferability of simulation to performance on live patients is incompletely proven in alimentary endoscopy. Although several studies report benefit from endoscopic simulation [16e18], these gains may diminish with clinical experience [19] [20]. The Fundamentals of Endoscopic Surgery program further necessitates flexible endoscopy simulators, for, which the fixed cost of $50e100,000 may be prohibitive among smaller programs. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Background: As work hour restrictions increasingly limit some operative experiences, personalized evaluative methods are needed. We prospectively assessed the value of cumulative sum (Cusum) to measure proficiency with percutaneous endoscopic gastrostomy (PEG) among surgical trainees. Materials and methods: Nine postgraduate year 1 surgery residents each underwent a 1-month rotation dedicated to endoscopy. Procedure durations for all PEG insertions were recorded prospectively. Criteria for task failure included need for attending takeover or procedure duration >10 min. Cusum parameters were defined a priori, with acceptable and unacceptable failure rates of 5% and 15%, respectively. Concurrently, expert endoscopists blinded to Cusum results evaluated trainee proficiency weekly using a multicategory, five-point Likert-scale survey. Results: Nine surgical residents performed an average of 21 PEGs each. Expert evaluations and Cusum analyses identified eight and seven participants who attained proficiency after a median of 11.5 and 12 cases, respectively. For four of the residents who achieved proficiency by Cusum criteria, eventual relapses to inadequate performance were identified. These relapses were not detected by expert evaluation. Six participants who attained proficiency by both metrics performed a combined 32 superfluous cases, which could have been redistributed to poor-performing trainees. Conclusions: Although lacking the granular insight of expert evaluations, Cusum analysis is more sensitive to relapses of subproficient performance. Adding Cusum analysis to expert evaluations can provide longitudinal, formative feedback and promote efficient redistribution of operative experiences.
    Full-text · Article · May 2014 · Journal of Surgical Research
  • Source
    • "Fundamentally, there has been a long-standing assumption that skills acquired from simulation settings are transferrable to the operating room, to reduce patient-based training time, improve operating theatre efficacy and ultimately improve patient safety, hence the development of simulation training. This review concluded that on the whole simulation training does transfer to the operative setting and is a safe and effective means for adjunct surgical education particularly in novice trainees, as it helps eliminate part of the steep learning curve [16-18], and improve visuo-spatial awareness [15]. The difficulty though, is that transference cannot solely be attributed to simulator models, as other factors must also play a role, in other words acquisition of technical skill is only one aspect of surgical training [15]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Over the past decade, driven by advances in educational theory and pressures for efficiency in the clinical environment, there has been a shift in surgical education and training towards enhanced simulation training. Microsurgery is a technical skill with a steep competency learning curve on which the clinical outcome greatly depends. This paper investigates the evidence for educational and training interventions of traditional microsurgical skills courses in order to establish the best evidence practice in education and training and curriculum design. A systematic review of MEDLINE, EMBASE, and PubMed databases was performed to identify randomized control trials looking at educational and training interventions that objectively improved microsurgical skill acquisition, and these were critically appraised using the BestBETs group methodology. The databases search yielded 1,148, 1,460, and 2,277 citations respectively. These were then further limited to randomized controlled trials from which abstract reviews reduced the number to 5 relevant randomised controlled clinical trials. The best evidence supported a laboratory based low fidelity model microsurgical skills curriculum. There was strong evidence that technical skills acquired on low fidelity models transfers to improved performance on higher fidelity human cadaver models and that self directed practice leads to improved technical performance. Although there is significant paucity in the literature to support current microsurgical education and training practices, simulated training on low fidelity models in microsurgery is an effective intervention that leads to acquisition of transferable skills and improved technical performance. Further research to identify educational interventions associated with accelerated skill acquisition is required.
    Full-text · Article · Jul 2013 · Archives of Plastic Surgery
  • Source
    • "Much controversy, however, exists in terms of the amount and format of pre-operating room training necessary for safe performance of various endoscopic procedures [23, 24]. Recently, multiple randomised studies have been able to show a beneficial impact on trainee’s endoscopic performance after training with innovative training devices, such as virtual reality simulators [25–29]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Specific training in endoscopic skills and procedures has become a necessity for profession with embedded endoscopic techniques in their surgical palette. Previous research indicates endoscopic skills training to be inadequate, both from subjective (resident interviews) and objective (skills measurement) viewpoint. Surprisingly, possible shortcomings in endoscopic resident education have never been measured from the perspective of those individuals responsible for resident training, e.g. the program directors. Therefore, a nation-wide survey was conducted to inventory current endoscopic training initiatives and its possible shortcomings among all program directors of the surgical specialties in the Netherlands. Program directors for general surgery, orthopaedic surgery, gynaecology and urology were surveyed using a validated 25-item questionnaire. A total of 113 program directors responded (79%). The respective response percentages were 73.6% for general surgeons, 75% for orthopaedic surgeon, 90.9% for urologists and 68.2% for gynaecologists. According to the findings, 35% of general surgeons were concerned about whether residents are properly skilled endoscopically upon completion of training. Among the respondents, 34.6% were unaware of endoscopic training initiatives. The general and orthopaedic surgeons who were aware of these initiatives estimated the number of training hours to be satisfactory, whereas the urologists and gynaecologists estimated training time to be unsatisfactory. Type and duration of endoscopic skill training appears to be heterogeneous, both within and between the specialties. Program directors all perceive virtual reality simulation to be a highly effective training method, and a multimodality training approach to be key. Respondents agree that endoscopic skills education should ideally be coordinated according to national consensus and guidelines. A delicate balance exists between training hours and clinical working hours during residency. Primarily, a re-allocation of available training hours, aimed at core-endoscopic basic and advanced procedures, tailored to the needs of the resident and his or her phase of training is in place. The professions need to define which basic and advanced endoscopic procedures are to be trained, by whom, and by what outcome standards. According to the majority of program directors, virtual reality (VR) training needs to be integrated in procedural endoscopic training courses.
    Full-text · Article · Mar 2008 · Surgical Endoscopy
Show more