<p>The last two decades have shown a boom in the field of
wearable sensing technology. Particularly in the consumer industry, growing
trends towards personalized health have pushed new devices to report many vital
signs, with a demand for high accuracy and reliability. The most common
technique used to gather these vitals is photoplethysmography or PPG. PPG devices
are ideal for wearable applications as they are simple, power-efficient, and
can be implemented on almost any area of the body. Traditionally PPGs were
utilized for capturing just heart rate, however, recent advancements in
hardware and digital processing have led to other metrics including respiratory
rate (RR) and peripheral oxygen saturation (SpO2), to be reported as well. Our
research investigates the potential for wearable devices to be used for
outpatient apnea monitoring, and particularly the ability to detect opioid
misuse resulting in respiratory depression. Ultimately, the long-term goal of
this work is to develop a wearable device that can be used in the
rehabilitation process to ensure both accountability and safety of the wearer.
This document details contributions towards this goal through the design,
development, and evaluation of a device called “Kick Ring”. Primarily, we
investigate the ability of Kick Ring to record heartrate (HR), RR, and SpO2. Moreover,
we show that the device can calculate RR in real time and can provide an
immediate indication of abnormal events such as respiratory depression. Finally,
we explore a novel method for reporting apnea events through the use of several
PPG characteristics. Kick Ring reliably gathers respiratory metrics and offers
a combination of features that does not exist in the current wearables space.
These advancements will help to move the field forward, and eventually aid in
early detection of life-threatening events.</p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14512068 |
| Date | 29 April 2021 |
| Creators | Jason David Ummel (10724028) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/NONINVASIVE_MEASUREMENT_OF_HEARTRATE_RESPIRATORY_RATE_AND_BLOOD_OXYGENATION_THROUGH_WEARABLE_DEVICES/14512068 |
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