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Reliability of Wearable Technology to Monitor Core Temperature Among Helicopter-Based EMS Crews
Michael Callihan1, Heather Cole2, Amanda Callihan2
1The University of North Carolina at Greensboro.
Workplace Health & Safety
|September 2, 2024
Summary
A wearable Slate Safety device slightly overestimates core body temperature compared to an ingestible pill, offering an enhanced safety margin for heat stress prevention in workers.
Area of Science:
- Occupational Health
- Biomedical Engineering
- Environmental Health
Background:
- Heat stress caused over 400 deaths in the U.S. (2011-2021).
- Current heat injury prevention relies on environmental factors, neglecting individual physiological responses.
- Personalized monitoring is crucial for effective heat stress management.
Purpose of the Study:
- To compare core temperature readings from an ingestible pill and a Slate Safety Band V2 wearable device.
- To evaluate the accuracy and reliability of the wearable device for monitoring worker heat stress.
Main Methods:
- Observational study involving nine emergency medical services personnel during helicopter flights.
- Core body temperature measured using an ingestible pill and the Slate Safety Band V2.
- Data analyzed using Microsoft Excel for error metrics (MSE, RMSE, MAE, MBE) and Bland-Altman plots.
Main Results:
- The Slate Safety device showed a significant bias, reading higher by an average of -0.48°C (-0.86°F).
- A significant correlation (0.26, p < .001) was found between the pill and the wearable device.
- Aggregate data showed Mean Square Error (MSE) of 0.43 and Root Mean Square Error (RMSE) of 0.65.
Conclusions:
- Remote physiological monitoring enhances worker safety against heat stress.
- The Slate Safety wearable's tendency to read higher offers a valuable safety margin.
- This technology can improve heat stress prevention strategies for at-risk workers.
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