Study Design
BLIND
This was a single blind randomised study with 18 participants randomised to each group. Each group received a structured surgical skills tutorial on performing and closing an arteriotomy: a conventional video-based tutorial group, and a MR HL2 group. The allocation ratio for each group was 1:1 via block randomisation prior to participation. The study received institutional educational ethics approval (EERP2021-027a) and informed consent was obtained from all participants.The study took place in three stages and employed a modified Peyton’s four-step approach to skills teaching for both groups [
Screenshot of the HoloLens teaching session content. The instructions are displayed on a screen in front of the participant whilst an embedded video clip of the step is shown to the left of the instructions. Instruments are highlighted with a 3D hologram in turn, and the surgical model is labelled to identify correct clamp placement (1 A). Close up image demonstrating how the technology highlights the correct instrument in order of use for the student (1B)Assessment tools such as the Objective Structured Assessment of Technical Skill (OSATS) have been shown to measure surgical skill proficiency accurately and validly [