An Ergonomics Simulation Study of a Clinical Recliner, Chair, and Bed During Sit-to-Stand Patient Lifting

The purpose of this study was to use ergonomics simulation methods, digital human modeling, and biomechanics software to assess the demands on caregivers when assisting patients with the initiation of standing from a seated position on a clinical (1) recliner, (2) chair, and (3) bed. A total of 6 device conditions were assessed (when adding in various tilts), 1 and 2 caregivers lifting 3 patient sizes with and without a gait belt, and with 3 relative contributions from the patient and caregiver. Lumbar compression and shear forces, arm, knee, and hip strength demands, and shoulder and trunk postures were determined. The novel clinical chair consistently had the lowest injury risk and was the only device to not exceed ergonomic threshold limits. Its design allowed patients’ feet to be moved closer to the edge of the seat pan, allowed for more tilt and increased height of the seat pan, and allowed for the removal of the armrests as a barrier.

Potvin J

Keywords: safe patient handling, gait belts, ergonomics, chair, recliner

Erratum:

The title for Table 1 should have read: Summary of main effect means and standard deviations for each independent variable studied. T-test p values are presented for selected compares ions, after Bonferroni corrections have been made and significant differences are in bold.