A Novel Wearable Device for Continuous Temperature Monitoring & Fever Detection

Nov 12, 2021IEEE journal of translational engineering in health and medicine

A new wearable device for continuous body temperature tracking and fever detection

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Circadian Biology on OpenScience ↗PubMed ↗DOI ↗OA ↗

Abstract

The Verily Patch measured body temperatures with an error of 0.35 ± 0.88°F compared to traditional methods.

The wearable device demonstrated a sensitivity of 90.2% and specificity of 87.8% in detecting fever episodes assessed in the clinic.
It detected 14.3 times more fever episodes than clinic assessments, providing a median lead time of 4.3 hours.
Self-monitoring of temperature by patients is often inaccurate and impractical over long durations.
Continuous monitoring via the Verily Patch may address these issues and improve clinical outcomes for high-risk patients.

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Continuous temperature monitoring in high-risk patients can enable healthcare providers to remotely track patients' temperatures, promptly detect fevers and timely intervene to improve clinical outcomes. We evaluated if a novel wearable, continuous temperature monitor (Verily Patch) can reliably estimate body temperature and early detect fevers in an outpatient setting in patients at a high risk of (FN) who recently underwent chemotherapy and autologous stem cell transplantation (ASCT).86 patients at a high risk for FN were prospectively enrolled at Mayo Clinic, MN. Patients wore the device in their axilla region for 7 days post ASCT and recorded self-measured oral temperatures every 3 hours. Patients were also followed using clinical standard-of-care procedures with daily oral temperature assessment. The clinic- and patient-assessed oral temperatures were used to develop and evaluate Verily Patch's body temperature and early fever detection algorithms using a K-fold cross-validation approach.The Verily Patch reliably measured body temperatures with an error of 0.35 ± 0.88°F in comparison to clinic- and patient-assessed oral temperatures. The sensitivity and specificity of the patch in detecting clinic-assessed fever episodes was 90.2% and 87.8%. The patch detected 14.3 times the number of clinic-assessed fever episodes with a median lead time of 4.3 hours.Patient self-monitoring of temperature and fever incidents suffers from low accuracy and is impractical for extended periods of time. Continuous temperature monitoring by a wearable device (such as Verily Patch) has the potential to overcome these challenges resulting in better patient clinical outcomes and more cost-effective care. Objective: Methods: Results: Conclusion:

Key numbers

0.35 ± 0.88°F

Measurement Error

Error compared to clinic-assessed oral temperatures.

90.2%

Fever Detection Sensitivity

Sensitivity for clinic-assessed fevers.

14.3×

Fever Episode Prediction Increase

Compared to all clinic readings.

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A Novel Wearable Device for Continuous Temperature Monitoring & Fever Detection

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