Augmented Reality for extremity hemorrhage training: a usability study.

Area of Science:

• Trauma Care
• Medical Simulation
• Human-Computer Interaction

Background:

• Limb massive hemorrhage is a leading cause of preventable death in trauma.
• Effective management requires training lay responders, who are often the first on scene.
• Current simulation methods, including VR/AR, often lack personalization.

Purpose of the Study:

• To design and develop an Augmented Reality (AR) application for training non-experienced users in anti-hemorrhagic device use.
• To create a personalized training experience adapting to user learning pace and feedback preferences.
• To evaluate the usability and effectiveness of the AR training system.

Main Methods:

• Development of an AR application using Unity Game Engine and Microsoft HoloLens2.
• Implementation of a multimodal interactive system with visual and audio cues.
• Usability testing with 20 subjects to assess tolerance, workload, and user experience.

Main Results:

• The AR system was well-tolerated, with low reported discomfort and workload.
• Subjects rated the system highly for usability, user experience, immersion, and presence.
• The multimodal feedback system adapted to individual user needs.

Conclusions:

• AR combined with multimodal cues is a promising tool for hemorrhage management training.
• The system effectively trains unexperienced users in using anti-hemorrhagic devices.
• This technology has the potential to increase the number of individuals skilled in hemorrhage control.