Why multi-tier surgical instrument table matters? An ergonomic analysis from mento-physical demand perspectives

医学 物理疗法 模拟 计算机科学 物理医学与康复 运营管理 工程类
作者
Ketan Thakur,Pranav Madhav Kuber,Masoud Abdollahi,Ehsan Rashedi
出处
期刊:Applied Ergonomics [Elsevier BV]
卷期号:105: 103828-103828 被引量:1
标识
DOI:10.1016/j.apergo.2022.103828
摘要

Using traditional back tables (BT) in operating rooms (OR) can lead to high physical/cognitive demand on nurses due to repetitive manual material handling activities. A multi-tier table (MTT) has been developed to relieve such stressors by providing extra working surfaces to avoid stacking the instrument trays and facilitate access to surgical tools. In this study, sixteen participants performed lifting/lowering and instrument findings tasks on each table, where kinematics, kinetics, subjective, and performance-related measures were recorded. Results indicated that MTT required lesser shoulder flexion (p-value<0.001), ∼14% lower shoulder loads (0.012), task completion time (<0.001), and cognitive/physical workloads (<0.004). Although peak low-back demands were ∼15% higher using MTT, the number of lifts to complete the same task was 60% lower, leading to lower cumulative demand on the low-back musculature. Utilizing MTT in OR could reduce demand and increase nurses' efficiency, leading to reduced risk of WMSDs and the total time of surgery. • Demands while using the multi-tier and back tables (MTT and BT) were compared. • The instrument finding time reduced substantially (>70%) for the MTT vs. BT. • Shoulder moment was ∼14% lower for MTT, while the low back load increased by ∼15%. • ∼27% higher low-back load was observed in male vs. female subjects while using MTT. • Overall, MTT demonstrated promising advantages on users' physical and mental demand.
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