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Quantifying Workload and Stress in Intensive Care Unit Nurses: Preliminary Evaluation Using Continuous Eye-Tracking.

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Summary
This summary is machine-generated.

Intensive care unit (ICU) nurses

Keywords:
eye movementsintensive care unitmental workloadnaturalistic study

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Area of Science:

  • Occupational health
  • Human factors engineering
  • Nursing science

Background:

  • Previous research on intensive care unit (ICU) nurse workload relied on subjective scoring or accelerometer data.
  • This study represents a novel, naturalistic approach to quantifying mental workload using objective eye movement metrics.

Purpose of the Study:

  • To evaluate the mental workload of ICU nurses during 12-hour day and night shifts using eye movement data.
  • To investigate how stress influences ocular metrics in ICU nurses during patient care activities.

Main Methods:

  • Eye movement data and physiological signals were collected from 15 nurses over 252 hours using Tobii Pro Glasses 2 and Empatica E4 devices.
  • Mixed-effect and ordinal regression models were employed to analyze changes in eye movement metrics during high-stress episodes.

Main Results:

  • No significant differences in eye movement metrics were found between day and night shifts.
  • The initial patient handoff period was associated with higher mental workload compared to other times.
  • Stress positively correlated with increased eye fixations and gaze entropy, but negatively with saccade duration and pupil diameter.

Conclusions:

  • Eye-tracking technology offers a viable method for assessing temporal variations in stress and mental workload within the ICU.
  • Development of a real-time monitoring system for stress and workload could facilitate intervention strategies.