Health Behavior, Healthy
Conditions
Keywords
sensor, non-invasive, multi-modality, vital signs, safe wearability, optoelectronic system, optical polarimetry, near-infrared spectroscopy, skin-interfaced, wearable
Brief summary
The purpose of this study is to investigate the safe wearability and basic functions of the multi-modality sensors fabricated in the PI lab.
Detailed description
Members of this research team have developed innovative, wearable devices capable of being comfortably and continuously worn while recording diverse physiologic measurements. The purpose of this study is to validate the safe wearability and basic functions of the novel biocompatible electronic sensor that will allow continuous, non-invasive physiological measurements. This study aims to obtain preliminary data on the safety and functional aspects of the developed devices and compare it to approved medical equipments (including Abbott Medquip Oximeter, Omron blood pressure monitor, and Vicorder device for pulse wave velocity), which will pave the way for future study that focuses certain disease model. Participants will be randomly assigned to Condition A, and wear the devices before and after exercise for 15 minutes each time, or Condition B and wear the devices for 2 hours continuously. During their 1-hour or 2.5-hour lab visit, study participants will wear the biocompatible electronic sensors and three approved medical devices during a slow deep breath, before and after a 6-minute brisk walk, or for an extended period of time (2 hours). Participants will return to the lab for two brief visits, 48 and 96 hours after the device wearing, to determine if any suspected adverse events related to study procedures or devices emerged after they left the research site. For the future study, we will plan to 1) optimize the devices for use in patients needing FiO2 weaning, 2) demonstrate the reliability, and accuracy of these devices for continuous physiological measurements, including but not limited to blood pressure, heart rate (HR), cerebral blood flow, temperature, glucose concentration, and respiratory rate, and 3) demonstrate these devices are preferred by patients to current measurement tools. Once validated, such sensors could fundamentally change the way blood flow, blood pressure, or related parameters are monitored for patients, eliminating risks associated with invasive monitoring, allowing continuous, real-time detection of clinically meaningful changes in the patients, advancing knowledge of hormonal signatures and physiological signals preceding clinically meaningful events.
Interventions
DEVICEMulti-modality Noninvasive Biosensor
The wearable sensor devices will be placed on the finger, wrist, temple, subclavian, arm, neck, and thigh of the participant and will provide continuous tissue mechanics, heart rate, respiration rate, blood flow, and pulse oxygenation measurements continuously throughout the experimental period.
DEVICEOximeter
The oximeter device will be placed on the right middle finger of the participant and will provide continuous pulse oxygenation and heart rate measurements continuously throughout the experimental period.
DEVICEPortable Blood Pressure Monitor
The blood pressure monitor device will be placed on the left arm of the participant and will take a blood pressure measurement every 5 minutes throughout the 15 minute experimental period, and every 15 minutes throughout the 2 hour experimental period.
DEVICEVicorder Pulse Wave Velocity Monitor
The pulse wave velocity monitor device will be placed on the right side of the neck and the right thigh and will provide measurements continuously throughout the experimental period.
Sponsors
University of North Carolina, Chapel Hill
North Carolina Translational and Clinical Sciences Institute
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
Yes
Inclusion criteria
* Individuals with ages between 18 and 99. * Healthy individuals (not known to suffer any significant illness relevant to the proposed study).
Exclusion criteria
* Pregnant or lactating. * History of active (clinically significant) skin disorders that make skin vulnerable to contact conventional electronic devices. * History of allergic response to silicones or adhesives (such as 3M Tegaderm). * Broken, damaged or irritated skin or rashes near the sensor application sites (finger, wrist, temple, subclavian, arm, neck, and thigh). * Subjects who are physically or cognitively unable to normally perform activities of daily living, assessed at the discretion of the investigator to ensure safe completion of study tasks. * Subjects who are unable to participate in moderate exercise for 6 minutes.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mean Comfort Level of Wearable Sensors | Questionnaire completed within 96 hours after device application. | A questionnaire about the comfort of the wearable sensors will be measured using the Likert scale, which ranges from 1 to 5 and is used to measure attitudes and perception changes about the our sensor. The minimum value 1 represents "strongly disagree" and the maximum value 5 represents "strongly agree", thus higher scores represent a better outcome. |
| Mean Safety Level of Wearable Sensors | Questionnaire completed within 96 hours after device application. | A questionnaire about the safety and reactions to the wearable sensors will be measured using the Likert scale, which ranges from 1 to 5 and is used to measure attitudes and perception changes about the safety of our sensor. The minimum value 1 represents "strongly disagree" and the maximum value 5 represents "strongly agree", thus higher scores represent a better outcome. |
| Mean Agreement Over Time of Physiological Parameters between Newly-Fabricated Wearable Sensors and Approved Devices | Through study completion, an average of 15 minutes. | Signals from the approved medical devices will measure tissue mechanics, heart rate, respiration rate, blood flow, and pulse oxygenation measurements and these data will be compared to the signals from our sensors. The difference over time will be measured on a scale from a minimum of 0 and a maximum of 1, with 0 being the best outcome and representing the lowest difference between the sensing data from the different devices. |
Countries
United States
Contacts
CONTACTHannah L Weisbecker, BS
CONTACTWubin Bai, PhD
PRINCIPAL_INVESTIGATORWubin Bai, PhD
Assistant Professor of Applied Physical Sciences
Outcome results
None listed