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Multisensory alarm to benefit alarm identification and decrease workload: a feasibility study.

Derek Rios¹, Nuphar Katzman², Kendall J Burdick³

¹Department of Neuroscience Nashville, Vanderbilt University, Nashville, TN, 37235, USA.

Journal of Clinical Monitoring and Computing

|May 3, 2023

Summary

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This summary is machine-generated.

A new multisensory alarm system, combining sound and vibration, may reduce perceived workload for medical staff. While it didn't significantly improve alarm identification accuracy, this novel approach offers potential benefits for healthcare professionals.

Area of Science:

Biomedical Engineering
Human Factors Engineering
Clinical Informatics

Background:

Conventional auditory medical alarms often lead to alarm fatigue due to poor design.
High cognitive load in intensive care units (ICUs) exacerbates alarm interpretation challenges.

Purpose of the Study:

To evaluate a novel multisensory alarm system designed to improve alarm interpretation and response.
To assess the impact of combined auditory and vibrotactile cues on alarm management under cognitive load.

Main Methods:

A within-subjects design tested three alarm conditions: conventional auditory, limited multisensory, and complete multisensory.
Participants (N=19) identified alarm type, priority, and patient identity during a cognitively demanding task.
Performance metrics included reaction time (RT), identification accuracy, and perceived workload.

Keywords:

Alarm fatigue Alarms Multisensory alarms Vibrotactile

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Main Results:

Reaction time was significantly faster for the conventional auditory control condition (p < 0.05).
No significant differences in alarm type, priority, or patient identification accuracy were found across conditions (p > 0.05).
The limited multisensory alarm condition reported the lowest perceived workload, mental demand, and temporal demand.

Conclusions:

Multisensory alarms may reduce perceived workload without compromising alarm identification performance.
A potential ceiling effect exists for multisensory stimuli, suggesting limited benefits beyond a certain integration level.
This technology could enhance clinical workflow and mitigate alarm fatigue in critical care settings.