Pulse Oximeter Hypoxia

Accuracy of Pulse Oximeters With Profound Hypoxia

The aim of this project is to test the accuracy of pulse oximeters (devices intended to measure oxygen saturation in blood noninvasively) during mild, moderate and severe hypoxia (a lower-than-normal concentration of oxygen in arterial blood); ie, a range of arterial HbO2 saturations from 100 to down to 70%. This is done by comparing the reading of the pulse oximeter during brief, steady state hypoxia with a gold-standard measurement of blood oxyhemoglobin (hemoglobin carrying oxygen) saturation, that is arterial blood sample processed in a laboratory.

Study Overview

• Status: Completed
• Conditions: Oximetry
• Intervention / Treatment: Device: MyHomeDoc

• Study Type: Interventional
• Enrollment (Actual): 12
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • California
    • San Francisco, California, United States, 94143
      • Hypoxia Research Laboratory Department of Anesthesia and Perioperative Care University of California

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 50 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. The subject is male or female, aged ≥18 and <50.
2. The subject is in good general health with no evidence of any medical problems.
3. The subject is fluent in both written and spoken English.
4. The subject has provided informed consent and is willing to comply with the study procedures.

Exclusion Criteria:

1. The subject is obese (BMI>30).
2. The subject has a known history of heart disease, lung disease, kidney or liver disease.
3. Diagnosis of asthma, sleep apnea, or use of CPAP.
4. Subject has diabetes.
5. Subject has a clotting disorder.
6. The subject a hemoglobinopathy or history of anemia, per subject report or the first blood sample, that in the opinion of the investigator, would make them unsuitable for study participation.
7. The subject has any other serious systemic illness.
8. The subject is a current smoker.
9. Any injury, deformity, or abnormality at the sensor sites that in the opinion of the investigators' would interfere with the sensors working correctly.
10. The subject has a history of fainting or vasovagal response.
11. The subject has a history of sensitivity to local anesthesia.
12. The subject has a diagnosis of Raynaud's disease.
13. The subject has unacceptable collateral circulation based on exam by the investigator (Allen's test).
14. The subject is pregnant, lactating or trying to get pregnant.
15. The subject is unable or unwilling to provide informed consent, or is unable or unwilling to comply with study procedures.
16. The subject has any other condition, which in the opinion of the investigators' would make them unsuitable for the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: DIAGNOSTIC
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: MyHomeDoc; Comparison of MyHomeDoc pulse oximetry readings with arterial blood saturation laboratory analysis in the same subject	Device: MyHomeDoc; MyHomeDoc device SpO2 measurements and parallel blood gas analysis to determine oxyhemoglobin saturation (SaO2) using an ABL-90 multi-wavelength oximeter.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Saturation level measurement	Induction of hypoxia by having subjects breathe mixtures of nitrogen, room air, and carbon dioxide to allow measurement of oxyhemoglobin saturation between 70-100%. Each plateau level of oxyhemoglobin saturation was maintained for at least 30 seconds or until reference pulse oximeters readings were stable	1 hour

Collaborators and Investigators

• Sponsor: MyHomeDoc Ltd.
• Investigators: Principal Investigator: Philip E Bickler, Ph.D., M.D., University of California, San Francisco

Study record dates

Study Major Dates

• Study Start (Actual): June 3, 2020
• Primary Completion (Actual): June 4, 2020
• Study Completion (Actual): June 4, 2020

Study Registration Dates

• First Submitted: September 14, 2020
• First Submitted That Met QC Criteria: September 18, 2020
• First Posted (Actual): September 24, 2020

Study Record Updates

• Last Update Posted (Actual): September 24, 2020
• Last Update Submitted That Met QC Criteria: September 18, 2020
• Last Verified: September 1, 2020

More Information

Terms related to this study

• Keywords: pulse oximetry; oximeter; myhomedoc
• Additional Relevant MeSH Terms: Signs and Symptoms, Respiratory; Hypoxia
• Other Study ID Numbers: VVD-MHD-155

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: No