4.4 Article

Developing a simulation tool to quantify biomechanical load and quality of care in nursing

Journal

ERGONOMICS
Volume 66, Issue 7, Pages 886-903

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/00140139.2022.2113921

Keywords

Digital human modelling; discrete event simulation; MSD risk; human factors; healthcare ergonomics

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This study combines Digital Human Modelling (DHM) and Discrete Event Simulation (DES) to assess the management needs for musculoskeletal disorder (MSD) risk in nursing jobs. The results show that increasing geographical patient-bed assignment distance, increasing patient-acuity, and increasing nurse-patient ratio can reduce biomechanical load but deteriorate the quality of care.
Nursing is a high musculoskeletal disorder (MSD) risk job with high workload demands. This study combines Digital Human Modelling (DHM) and Discrete Event Simulation (DES) to address the need for tools to better manage MSD risk. This novel approach quantifies physical-workload, work-performance, and quality-of-care, in response to varying geographical patient-bed assignments, patient-acuity levels, and nurse-patient ratios. Lumbar loads for 86 care-delivery tasks in an acute care hospital unit were used as inputs in a DES model of the care-delivery process, creating a shift-long time trace of the biomechanical load. Peak L4/L5 compression and moment were 3574 N and 111.58 Nm, respectively. This study reports trade-offs in all three experiments: (i) increasing geographical patient-bed assignment distance decreased L4/L5 compression (8.8%); (ii) increased patient-acuity decreased L4/L5 moment (4%); (iii) Increased nurse-patient ratio decreased L4/L5 compression (10%) and moment (17%). However, in all experiments, Quality of care indicators deteriorated (20, 19, and 29%, respectively). Practitioner Summary: This research has the potential to support decision-makers by developing a simulation tool that quantifies the impact of varying operational and design-policies in terms of biomechanical-load and quality of care. The demonstrator-model reports: as geographical patient-bed distance, patient-acuity levels, and nurse-patient ratios increase, biomechanical-load reduces, and quality of care deteriorates.

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