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Tetherless ergonomics workstation to assess nurses' physical workload in a clinical setting
Warren D Smith1, Michael E Nave, Alan P Hreljac
1Electrical and Electronic Engineering, Department, California State University, Sacramento, Sacramento, CA 95819, USA. smithwd@csus.edu
Summary
This study developed a wireless workstation to measure nurses' physical workload when moving patients. Higher bed heights reduced trunk flexion but increased shoulder muscle effort, indicating ergonomic trade-offs.
Area of Science:
- Ergonomics
- Nursing
- Biomedical Engineering
Background:
- Nurses face significant physical injury risks during patient handling.
- Existing methods for assessing nurses' physical workload can be cumbersome in clinical settings.
Purpose of the Study:
- To develop and test a tetherless ergonomics workstation for assessing nurses' physical workload.
- To evaluate the impact of bed height on nurses' physical workload during patient repositioning.
Main Methods:
- A tetherless workstation with wearable sensors for body orientation and muscle activity was developed.
- The workstation was validated against a multi-camera video motion analysis system.
- A pilot study examined student nurses' workload at varying bed heights while repositioning a simulated patient.
Main Results:
- Wearable sensor data closely matched video motion analysis for body orientation.
- Increasing bed height decreased trunk flexion (thoracic and lumbar) and lumbar muscle effort.
- Higher bed heights led to increased trapezius and deltoid muscle effort.
Conclusions:
- The developed workstation is suitable for studying nurses' physical workload in clinical environments.
- Bed height significantly influences nurses' physical workload, with ergonomic trade-offs observed.
- Further studies with practicing nurses in clinical settings are warranted.
