MIxed ReAlity Versus Manikin Simulation in Basic Life Support Training for Medical Students: a Noninferiority Randomized Controlled Trial (MIRA).

In MR group, students attended a 32 minutes course, in groups of four students with one teacher. The course included 22 minutes of individual MR training using headset (HTC Vive Focus 3®) and 10 minutes of debriefing. The individual MR training contained a step-by-step BLS reminder, including chest compression practice. Then, students engaged in a standardized virtual scenario where they interacted with both virtual characters and a physical manikin torso. The headset overlaid digital elements onto the real world, allowing the students to perform BLS while receiving real-time feedback. The feedback system provided visual cues indicating whether their chest compression rate and depth were correct. The teacher-to-student ratio was 1:4