Abstract 1966: Initial Face and Content Validation for Carotid Artery Stenting using the Procedicus Vascular Interventional System Trainer (VIST™) Virtual Reality Simulator
Background: Virtual reality (VR) simulation has been recommended for use as part of a tiered training approach for learning carotid artery stenting (CAS) techniques. However, before such VR simulation technology can be used, the device must first go through a rigorous validation process. This is the first report on the face and content validation efforts on the Vascular Interventional System Trainer (VIST, Mentice) used in CAS training.
Methods: Experienced physicians (n = 19) performing percutaneous endovascular interventions underwent didactic and simulator-based training as part of a structured course for CAS training. Each operator completed 2 VR simulated right internal CAS procedures and then assessed the VIST simulator for both its face and content validity. The assessment was divided into 3 sections based on how the simulation tools looked, felt, and behaved during the procedure. Scores were rated on a 5-point Likert scale.
Results: The guide catheter configuration and placement in the vessel (mean 4.13) along with the movement, deployment, and retraction of the embolic protection device (EPD) looked realistic (mean 4.12). Furthermore, high realism of the look of the stent-size chosen, stent deployment, and its post-deployment wall apposition was noted (mean 4.2). The feel and manipulation of the guide catheter was reasonably realistic (mean 3.9). The EPD was felt to be reasonably realistic with respect to the advancement, deployment, and retrieval of the device (mean 3.8). The feel of stent deployment was realistic (mean 3.9). 1-to-1 haptic correspondence of catheters and wires during psychomotor movements were felt to be representative of a live case (mean 3.8). During simulation, the overall sequence in which devices would be used during an actual CAS case was very realistic (mean 4.2). The overall score of the VIST simulator showed that it well represented an actual CAS case (mean 4.0).
Conclusions: The VIST represents one of the most sophisticated high-fidelity VR simulators in medicine. Physicians surveyed showed that the VR simulated CAS procedure closely resembled an actual case. Additional studies are necessary to complete the validation assessment of this VR simulator for use in CAS training.