Simulate and sense force exertions during virtual patient transfer tasks

Virtual reality (VR) is commonplace for training, yet simulated physical activities in VR do not require trainees to engage and contract the muscle groups normally engaged in physical lifting. This paper presents a muscle activity-driven interface to elicit the sensation of forceful, physical exertions when lifting virtual objects. Users contracted and attained predefined muscle activity levels that were calibrated to user-specific muscle activity when lifting the physical counterpart. The overarching goal is to engage the appropriate muscles, and thereby encourage and elicit behaviors normally seen in the physical environment. Activities of 12 key muscles were monitored using electromyography (EMG) sensors while they performed a three-part patient lifting task in a Cave Automatic Virtual Environment. Participants reported higher task mental loads and less physical loads for the virtual lift than the physical lift. Findings suggest the potential to elicit sensation of forceful exertion via EMG feedback but needed fine-tuning to offset perceived workload.

Simulation to Teach Safe Patient Handling and Mobility for Home Caregivers

Safe patient handling and mobility (SPHM) programs are needed in the home care environment. As patient-lifting technology and devices become more widely available for use in the home setting, caregivers need opportunities to learn how to properly use these devices. Nonmedical caregivers employed by personal support services agencies (PSSAs) and home caregivers have very limited access to opportunities for SPHM training in rural areas of Tennessee. Safe patient handling and mobility training utilizing simulation with an interprofessional approach was developed and provided to 17 nonmedical and family home caregivers. The training was evaluated utilizing Kirkpatrick’s Four-Level Training Evaluation Model. Participants completed anonymous surveys immediately following the training and 4 to 6 weeks after the training. Survey I (n = 17): Respondents indicated increased knowledge of safe patient handling (94%) and applied knowledge of safe patient handling in training (90%). Survey II (n = 6): Most respondents (67%) indicated that they had applied the knowledge and skills that they had learned in the training. Two respondents (33%) indicated that they had not yet had the opportunity to apply the knowledge and skills they learned. The survey also showed that all respondents believed that the knowledge and skills they had learned helped to decrease the risk of personal injury and injury to patients. Safe patient handling and mobility training utilizing simulation with an interprofessional approach was effective in promoting safety of nonmedical and family caregivers in the home setting. Based on the success of this program, more training opportunities should be implemented to improve patient and caregiver safety.