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Wireless Wearable Ultrasound Sensor to Characterize Respiratory Behavior.
Ang Chen1, Rachel Diane Rhoades2, Andrew Joshua Halton2
1School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, USA. achen2021@outlook.com.
Methods in Molecular Biology (Clifton, N.J.)
|November 27, 2021
Summary
A new paper-based wearable sensor accurately monitors respiratory function, measuring lung volumes and flow rates via ultrasound. This device enables continuous tracking of chronic respiratory conditions like asthma.
Area of Science:
- Biomedical Engineering
- Wearable Technology
- Respiratory Medicine
Background:
- Continuous monitoring of respiratory behavior is crucial for managing chronic respiratory diseases.
- Existing methods for respiratory monitoring can be cumbersome or limited in continuous application.
Purpose of the Study:
- To develop and evaluate a novel wireless wearable sensor for continuous, real-time respiratory monitoring.
- To assess the sensor's ability to extract clinically relevant respiratory parameters and transmit them to a smartphone.
Main Methods:
- A compact, paper-substrate wearable sensor utilizing ultrasound emitter and receiver to measure changes in circumference.
- Wireless transmission of ultrasound pressure data to a custom smartphone application for analysis.
- Calculation of temporal lung volume, flow rate vs. volume loops, and key parameters like FEV1 and FVC.
Main Results:
- The sensor accurately measures linear changes in circumference, converting them to temporal lung volume data.
- The smartphone app successfully displays respiratory plots and extracts parameters such as FEV1 and FVC.
- Evaluation with volunteers showed a mean difference of 0.00-4.25% for the FEV1/FVC ratio compared to standard spirometers.
Conclusions:
- The wireless wearable sensor offers a non-invasive, continuous method for monitoring respiratory behavior.
- This technology has the potential to aid in managing chronic respiratory illnesses and provide timely alerts for medical assistance.
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