Background: Virtual reality simulation for laparoscopic colectomy has been used for training of surgical residents and has been considered as a model for technical skills assessment of board-eligible colorectal surgeons. However, construct validity (the ability to distinguish between skill levels) must be confirmed before widespread implementation.
Objective: This study was designed to specifically determine which metrics for laparoscopic sigmoid colectomy have evidence of construct validity.
Design: General surgeons that had performed fewer than 30 laparoscopic colon resections and laparoscopic colorectal experts (>200 laparoscopic colon resections) performed laparoscopic sigmoid colectomy on the LAP Mentor model. All participants received a 15-minute instructional warm-up and had never used the simulator before the study. Performance was then compared between each group for 21 metrics (procedural, 14; intraoperative errors, 7) to determine specifically which measurements demonstrate construct validity. Performance was compared with the Mann-Whitney U-test (p < 0.05 was significant).
Results: Fifty-three surgeons; 29 general surgeons, and 24 colorectal surgeons enrolled in the study. The virtual reality simulators for laparoscopic sigmoid colectomy demonstrated construct validity for 8 of 14 procedural metrics by distinguishing levels of surgical experience (p < 0.05). The most discriminatory procedural metrics (p < 0.01) favoring experts were reduced instrument path length, accuracy of the peritoneal/medial mobilization, and dissection of the inferior mesenteric artery. Intraoperative errors were not discriminatory for most metrics and favored general surgeons for colonic wall injury (general surgeons, 0.7; colorectal surgeons, 3.5; p = 0.045).
Limitations: Individual variability within the general surgeon and colorectal surgeon groups was not accounted for.
Conclusions: The virtual reality simulators for laparoscopic sigmoid colectomy demonstrated construct validity for 8 procedure-specific metrics. However, using virtual reality simulator metrics to detect intraoperative errors did not discriminate between groups. If the virtual reality simulator continues to be used for the technical assessment of trainees and board-eligible surgeons, the evaluation of performance should be limited to procedural metrics.
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http://dx.doi.org/10.1097/DCR.0000000000000031 | DOI Listing |
Mayo Clin Proc
January 2025
Departments of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, USA; Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA; Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA. Electronic address:
Objective: To study the effectiveness of virtual reality (VR) in reducing anxiety levels in patients undergoing first-time sternotomy for cardiac surgery.
Patients And Methods: A total of 100 adult patients scheduled for cardiac surgery at Mayo Clinic in Rochester, Minnesota, USA, was recruited from April 19, 2022, to October 12, 2022. Before surgery, patients wore a physiological monitor to record vital signs.
Int J Comput Assist Radiol Surg
January 2025
Faculty of Computer Science and Research Campus STIMULATE, Otto-von-Guericke University of Magdeburg, Magdeburg, Germany.
Purpose: Structured abdominal examination is an essential part of the medical curriculum and surgical training, requiring a blend of theory and practice from trainees. Current training methods, however, often do not provide adequate engagement, fail to address individual learning needs or do not cover rare diseases.
Methods: In this work, an application for structured Abdominal Examination Training using Augmented Reality (AETAR) is presented.
Sci Rep
January 2025
Department of Computer Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand.
Active transportation, such as cycling, improves mobility and general health. However, statistics reveal that in low- and middle-income countries, male and female cycling participation rates differ significantly. Existing literature highlights that women's willingness to use bicycles is significantly influenced by their perception of security.
View Article and Find Full Text PDFAccid Anal Prev
January 2025
Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India. Electronic address:
Pedestrians use visual cues (i.e., gaze) to communicate with the other road users, and visual attention towards the surrounding environment is essential to be situationally aware and avoid oncoming conflicts.
View Article and Find Full Text PDFJ Physiol
January 2025
Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College, London, United Kingdom.
In this study we have used a highly immersive virtual reality (VR) cycling environment where incongruence between virtual hill gradient (created by visual gradient and bike tilt angle) and actual workload (pedalling resistance) can experimentally manipulate perception of exercise effort. This therefore may provide a method to examine the role of effort perception in cardiorespiratory control during exercise. Twelve healthy untrained participants (7 men, age 26 ± 5 years) were studied during five visits.
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