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Purpose

Background: The COVID-19 outbreak has strained the health care system. New tools are needed for diagnostic testing and monitoring of people who have the virus. Researchers want to test a device they hope can screen, detect, and monitor symptoms linked to respiratory diseases like COVID-19. Objective: To evaluate and validate a device that measures breathing, body temperature, heart rate, and tissue oxygenation. Eligibility: Healthy adults ages 18 and older with no flu-like symptoms and no current signs of infection, cough, fever, or sneezing. Design: Participants will have a physical exam. Their vital signs will be taken. Participants will sit in a chair. They will be monitored for 60 to 80 minutes while they do the following tasks: Rest for 10 minutes. They will repeat this after each task. Hold their breath for up to 2 minutes and then rest for 2 minutes. They will do this task 3 times. Pace-breathe with breathing rates of 10, 20, and 30 breaths per minute. They will do this task 2 times. Breathe air that has 5% of carbon dioxide for 5 minutes. During these tasks, data will be collected and recorded with a pulse oximeter, thermometer, respiratory belt, and spirometer. Participants will fill out questionnaires related to their daily activity (medication intake, exercise, smoking, and drinking). Participation will last for 2 to 3 hours.

Conditions

Eligibility

Eligible Ages
Between 18 Years and 78 Years
Eligible Genders
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

In order to be eligible to participate in this study, an individual must meet all of the following criteria: - Provision of signed and dated informed consent form. - Stated willingness to comply with all study procedures and availability for the duration of the study. - Male or female aged 18 years or greater. - In good general health as evidenced by medical history with no signs of cough, sneeze and upper respiratory symptoms. - Body temperature in normal range (afebrile, temperature < 100.4 (Infinite) F) on the day of the experiment.

Exclusion Criteria

  • Any skin disease. - Fever (Temperature greater than or equal to 100.4 degrees F). - Any past or present cardiovascular or pulmonary diseases. - Known adverse reaction to latex. - Any medical condition that, in the opinion of the Principal Investigator would preclude the inclusion of a patient onto this research study. - Unable or unwilling to give informed consent. - Individuals with known respiratory conditions. - Individuals who are currently taking medication that may cause methemoglobinemia such as nitrates derivatives, sulfonamides, dapsone, phenacetin, phenazopyridine, some local anesthetics such as prilocaine, topical anesthetics such as emla cream, benzocaine. - Individuals with history of seizure. - Smokers and those on narcotics. - Pregnant women are excluded due to risk associated to hypercapnia risk

Study Design

Phase
N/A
Study Type
Interventional
Allocation
N/A
Intervention Model
Single Group Assignment
Primary Purpose
Device Feasibility
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Healthy Volunteer 		Healthy Volunteer
  • Device: Fitbit
    Performance of the NIRS biosensor will be explored in comparison to this commercial wearable.
  • Device: Douglas Bag
    The Douglas Bag will be used for inducing hypercapnia.
  • Device: Periflux 6000 EPOS
    Tissue oxygen saturation measured by the Periflux 6000 will be compared with peripheral tissue saturation measured with the NIRS biosensor both at rest and during the induced hypercapnia, paced breathing and breath holding.
  • Device: BIOPAC
    The BIOPAC system will be used to record the PPG signal, cardiovascular hemodynamics, and respiratory parameters in order to noninvasively monitor the heart rate, heart rate variability, respiratory rate, respiratory effort index, and arterial oxygen saturation.
  • Device: Flowmet
    Flowmet will be used for a measurement of arterial blood flow within the finger or toe. Flowmet outputs a PPG waveform that will be compared with the NIRS biosensor.
  • Device: NIRS
    a. Each subject will be monitored with the multimodal system for 10 minutes while sitting quiescent on a chair in resting position. All screening index parameters will be collected and recorded. b. Each subject will be studied for approximately 60-80 minutes while being exposed to a mild Hypercapnia (5% CO2), paced breathing and breath holding followed by a 10-minute recovery time after each task.

Recruiting Locations

More Details

NCT ID
NCT05035420
Status
Suspended
Sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Detailed Description

Study Description:<TAB> This observational pilot study will characterize the performance of a multimodal biosensor device (a portable and a wireless NIRS device, PPG and temperature sensor) in measuring human vital signs, which later will be explored as a point-of-care method for screening and treatment response monitoring of individuals with an infectious respiratory illness. The devices will measure heart, respiratory, and tissue oxygenation parameters in healthy subjects at rest and during induced hypercapnia, breath holding, and paced breathing. Objectives: <TAB> Primary objective: Compare performance of two multimodal NIRS biosensor devices with commercial systems for measuring vital physiological signals including cardiac, respiratory, and tissue oxygenation in individuals at rest. Secondary objective: Compare measured changes in cardiac, respiratory, and tissue oxygenation parameters during induced hypercapnia, breath holding, and paced breathing exercises between the biosensor and commercial systems. Exploratory objective: Characterize arterial oxygen saturation (SpO2), peripheral oxygen saturation (StO2) and cerebral oxygen saturation (ScO2) during respiratory perturbations. Endpoints:<TAB> Primary endpoint: Paired differences, Lin s concordance correlation coefficient and Bland-Altman analysis for the following parameters: Biosensor tissue microvascular oxygenation level (StO2), respiratory rate (RR), respiratory effort index (REI), heart rate (HR) and heart rate variability (HRV). Secondary endpoint: Paired differences, Lin s concordance correlation coefficient and Bland-Altman analysis for the following parameters: Biosensor tissue microvascular oxygenation level (StO2), respiratory rate (RR), respiratory effort index (REI), heart rate (HR) and heart rate variability (HRV) during induced hypercapnia, breath holding, and paced breathing exercises. Exploratory endpoint: Arterial oxygen saturation (SpO2), peripheral oxygen saturation (StO2) and cerebral oxygen saturation (ScO2).

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.