Oximetry, PulseNCT02571686
Accuracy of Pulse Oximeters With Profound Hypoxia
An observational study of Oximetry, Pulse, run by Mortara Instrument at 1 site in United States.
Trial summary
The aim of this project is to test the accuracy of pulse oximeters during mild, moderate and severe hypoxia. This is done by comparing the reading of the pulse oximeter during brief, steady state hypoxia with a gold-standard measurement of blood oxyhemoglobin saturation (arterial blood sample processed in a laboratory… Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Oximetry, Pulse
- What is being tested?
- Surveyor S4
- Type of treatment
- Medical device
- How many people
- 10 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2015to Oct 2015
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: 10-12 healthy volunteers
Who may be able to join
- The subject is male or female, aged ≥18 and <50.
- The subject is in good general health with no evidence of any medical problems.
- The subject is fluent in both written and spoken English.
- The subject has provided informed consent and is willing to comply with the study procedures.
Who cannot join
- The subject is obese (BMI>30).
- The subject has a known history of heart disease, lung disease, kidney or liver disease.
- Diagnosis of asthma, sleep apnea, or use of CPAP(Continuous positive airway pressure).
- Subject has diabetes.
- Subject has a clotting disorder.
- 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.
Show all 16Show fewer
- The subject has any other serious systemic illness.
- The subject is a current smoker.
- Any injury, deformity, or abnormality at the sensor sites that in the opinion of the investigators' would interfere with the sensors working correctly.
- The subject has a history of fainting or vasovagal response.
- The subject has a history of sensitivity to local anesthesia.
- The subject has a diagnosis of Raynaud's disease.
- The subject has unacceptable collateral circulation based on exam by the investigator (Allen's test).
- The subject is pregnant, lactating or trying to get pregnant.
- The subject is unable or unwilling to provide informed consent, or is unable or unwilling to comply with study procedures.
- The subject has any other condition, which in the opinion of the investigators' would make them unsuitable for the study -
Trial locations and contacts
1 site in 1 country.
United States1 site
Department of Anesthesia Clinical Studies Facility, room A-65 Parnassus Campus.
San Francisco, California, 94143
About this study
The aim of this project is to test the accuracy of pulse oximeters during mild, moderate and severe hypoxia. This is done by comparing the reading of the pulse oximeter during brief, steady state hypoxia with a gold-standard measurement of blood oxyhemoglobin saturation (arterial blood sample processed in a laboratory hemoximeter). The data obtained is submitted by pulse oximeter manufacturers to the FDA for device approval.
Read the detailed description
Overall design:
Studies normally involve 6-12 normal adult volunteer paid subjects, with 20-25 1-2 ml arterial blood samples from each subject obtained at different steady-state levels of hypoxia from 70-100%. Blood samples obtained from an arterial line are measured in a hemoximeter to determine true saturation value. Some sponsors may not require any blood sampling. Some sponsors may require additional blood samples, up to 35 samples may be drawn.
Readings from the test pulse oximeters are recorded and compared to these "gold-standard" blood values. The pulse oximeter probes may be located at a variety of sites on the subjects, including fingers, toes, ears, forehead, scalp and bridge of the nose. These detector-probes are all non-invasive. The level of hypoxia is measured and controlled by the investigator. A computer program that displays a prediction, breath by breath, the arterial oxygen saturation, (SaO2) of the study subject. SaO2 is computed from end-expired Po2 and Pco2 as determined by mass spectrometer gas analysis. This information permits the inspired gas mixture of air, plus CO2 and nitrogen, to be adjusted by an operator watching the value computed after each expiration on an analog meter. This computer-estimated saturation is adjusted by the operator to one of 6 levels of predicted saturation, and is held stable for about 30 seconds at each level. Two or three "runs" are conducted per subject. Each "run" lasts 8-12 min and 4 to 5 plateaus are tested per run. The manufacturer may choose the target values. Plateaus are typically sought at 92%, 86%, 80%, 74%, 68% and 62%. Other manufacturers have asked for an equal number of data points but with all points between 70% and 100%. Some sponsors may also request additional variables to be measured during testing including high or low Carbon Dioxide (CO2), where subjects will be asked to hyperventilate; low perfusion, where subjects will be asked to lay flat, or with their head up or down; testing pulse oximeters during motion, with the subject's hand fixed to a motion machine; or measure eye-tracking during hypoxia. The subject's will be informed by the study staff and in the consent form if any of these additional procedures apply.
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- Conditions
- Oximetry, Pulse
- Being tested
- Surveyor S4
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Surveyor S4Device
What is being measured
The primary outcome is the main question the study is designed to answer.
Accuracy of Pulse Oximeter
Measured: 2 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Oct 2015 (estimated)
- Study startOct 2015
- Primary completionOct 2015
- Study completionOct 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Oximetry, PulseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Time perspective
- Prospective
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- Mortara Instrument
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02571686
- Sponsor's protocol ID
- 139253
- Status last verified
- Dec 2015
- First submitted
- 6 Oct 2015
- Last updated
- 24 Dec 2015
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Dec 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Accuracy of Pulse Oximeters With Profound Hypoxia
- ClinicalTrials.gov ID
- NCT02571686
- Acronym / sponsor ID
- 139253
- Conditions
- Oximetry, Pulse
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Mortara InstrumentIndustry (pharma, biotech, devices)
- Study start
- Oct 2015
- Primary completion
- Oct 2015 (actual)
- Study completion
- Oct 2015 (actual)
- First posted
- 8 Oct 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this project is to test the accuracy of pulse oximeters during mild, moderate and severe hypoxia. This is done by comparing the reading of the pulse oximeter during brief, steady state hypoxia with a gold-standard measurement of blood oxyhemoglobin saturation (arterial blood sample processed in a laboratory hemoximeter). The data obtained is submitted by pulse oximeter manufacturers to the FDA for device approval.
Detailed description
Overall design:
Studies normally involve 6-12 normal adult volunteer paid subjects, with 20-25 1-2 ml arterial blood samples from each subject obtained at different steady-state levels of hypoxia from 70-100%. Blood samples obtained from an arterial line are measured in a hemoximeter to determine true saturation value. Some sponsors may not require any blood sampling. Some sponsors may require additional blood samples, up to 35 samples may be drawn.
Readings from the test pulse oximeters are recorded and compared to these "gold-standard" blood values. The pulse oximeter probes may be located at a variety of sites on the subjects, including fingers, toes, ears, forehead, scalp and bridge of the nose. These detector-probes are all non-invasive. The level of hypoxia is measured and controlled by the investigator. A computer program that displays a prediction, breath by breath, the arterial oxygen saturation, (SaO2) of the study subject. SaO2 is computed from end-expired Po2 and Pco2 as determined by mass spectrometer gas analysis. This information permits the inspired gas mixture of air, plus CO2 and nitrogen, to be adjusted by an operator watching the value computed after each expiration on an analog meter. This computer-estimated saturation is adjusted by the operator to one of 6 levels of predicted saturation, and is held stable for about 30 seconds at each level. Two or three "runs" are conducted per subject. Each "run" lasts 8-12 min and 4 to 5 plateaus are tested per run. The manufacturer may choose the target values. Plateaus are typically sought at 92%, 86%, 80%, 74%, 68% and 62%. Other manufacturers have asked for an equal number of data points but with all points between 70% and 100%. Some sponsors may also request additional variables to be measured during testing including high or low Carbon Dioxide (CO2), where subjects will be asked to hyperventilate; low perfusion, where subjects will be asked to lay flat, or with their head up or down; testing pulse oximeters during motion, with the subject's hand fixed to a motion machine; or measure eye-tracking during hypoxia. The subject's will be informed by the study staff and in the consent form if any of these additional procedures apply.
.
Study design
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- 10-12 healthy volunteers
Key inclusion criteria (4 listed)
- The subject is male or female, aged ≥18 and <50.
- The subject is in good general health with no evidence of any medical problems.
- The subject is fluent in both written and spoken English.
- The subject has provided informed consent and is willing to comply with the study procedures.
Key exclusion criteria (16 listed)
- The subject is obese (BMI>30).
- The subject has a known history of heart disease, lung disease, kidney or liver disease.
- Diagnosis of asthma, sleep apnea, or use of CPAP(Continuous positive airway pressure).
- Subject has diabetes.
- Subject has a clotting disorder.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Surveyor S4 | Device | – |
Primary outcome
Accuracy of Pulse Oximeter
Time frame: 2 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Dec 2015.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Oximetry, Pulse, run by Mortara Instrument at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Accuracy of Pulse Oximeter (time frame: 2 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Dec 2015.