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Cuffless differential blood pressure estimation using smart phones.
Vikram Chandrasekaran1, Ram Dantu, Srikanth Jonnada
1Department of Computer Science, University of North Texas, Denton, TX 76203, USA. vikram.chandrasekaran@unt.edu
IEEE Transactions on Bio-Medical Engineering
|August 8, 2012
Summary
Smartphone cameras and microphones can now measure vital signs like heart rate and blood pressure. This innovative approach offers a non-invasive, accurate alternative to traditional medical devices, achieving 95-100% accuracy.
Area of Science:
- Biomedical Engineering
- Mobile Health Technology
- Cardiovascular Monitoring
Background:
- Smartphones are ubiquitous, featuring advanced processors, cameras, and sensors.
- Existing vital sign measurement tools can be invasive or require specialized equipment.
- A significant percentage of adults use smartphones daily, presenting a large potential user base.
Purpose of the Study:
- To explore the use of smartphone cameras and microphones for biomedical applications.
- To develop novel methods for quantifying vital signs, specifically heart rate and blood pressure.
- To replace traditional stethoscopes and cuff-based devices with smartphone technology.
Main Methods:
- Utilized smartphone built-in cameras and microphones to record physiological data.
- Proposed two differential blood pressure estimation techniques using heartbeat and pulse data.
- Employed techniques involving either two smartphones or one smartphone with an external microphone.
- Calculated systolic and diastolic pressure by analyzing pulse pressure and stroke volume.
Main Results:
- Developed and tested two distinct methods for blood pressure estimation using smartphones.
- Achieved high accuracy in estimated blood pressure values when compared to commercial devices.
- Demonstrated 95-100% accuracy in blood pressure measurements, indicating significant potential.
Conclusions:
- Smartphones can effectively replace traditional devices for vital sign measurement.
- The proposed methods offer a non-invasive and accessible approach to monitoring heart rate and blood pressure.
- This technology has the potential to revolutionize remote patient monitoring and personal health tracking.
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