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Assessing the Tidal Volume through Wearables: A Scoping Review
Vito Monaco1,2, Cesare Stefanini1,2,3
1The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
Sensors (Basel, Switzerland)
|July 2, 2021
Summary
Wearable devices can estimate tidal volume using various sensors, but accuracy decreases during movement. Further research is needed to improve performance for reliable respiratory monitoring.
Area of Science:
- Biomedical Engineering
- Respiratory Physiology
- Wearable Technology
Background:
- Respiratory activity assessment using wearable devices is gaining traction due to diverse sensor availability.
- Monitoring tidal volume is crucial for both daily activities and clinical settings.
Purpose of the Study:
- To conduct a scoping review identifying evidence for wearable devices monitoring tidal volume.
- To assess current technologies and their effectiveness in diverse settings.
Main Methods:
- Literature screening of PubMed, Scopus, and Web of Science databases in December 2020.
- Inclusion criteria focused on studies comparing wearable sensor tidal volume assessment with gold standards (spirometry, optoelectronic plethysmography) and wearable technology solutions.
- 36 out of 1031 initial documents met eligibility criteria.
Main Results:
- Tidal volume estimation is feasible using technologies like IMUs, strain sensors (resistive, capacitive, inductive, electromagnetic, optical), and acoustic sensors.
- Relative volumetric error is typically ≥10% during quasi-static tasks.
- Accuracy significantly deteriorates during dynamic motor tasks like walking.
Conclusions:
- Current wearable technologies show potential for tidal volume monitoring but require significant improvement in performance.
- Further research is essential to enhance accuracy and reliability for practical applications.
- Identifying specific applications based on device accuracy is a key future direction.
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