Systematic Calculation of HyperOxygenation Transit Time

  • End date
    Mar 1, 2022
  • participants needed
  • sponsor
    University Hospital, Angers
Updated on 25 January 2021


Cardiac output (CO) is an essential physiological parameter of healthy person or illness.

In clinical practices, all methods of measuring the CO(Fick method, thoracic impedance, esophageal echodoppler etc) contain limit. Each method are dangerous or hard to implement.

CO is probably determining element of blood transit time and thus the availability of oxygen between the central organs (heart, lung) and the peripheral organs (leg, arms).

Our hypothesis is transcutaneous oxymetry mesurement with oxygen inhalation, to cause a transient hyperoxia, can be used to determinate blood transit time between central organs and peripheral organs. This simple method will be non invasive technique.


At admission eligible patients are proposed to participate. Written consent is signed after complete oral and written explanation of the protocol is signed.

The time of onset hyperoxia will be compare to usual CO method by cross correlation.

The duration of participation for subject is equal to 1 hour.

Condition Cardiac Output
Treatment Transcutaneous oxymetry measurement
Clinical Study IdentifierNCT04007146
SponsorUniversity Hospital, Angers
Last Modified on25 January 2021


Yes No Not Sure

Inclusion Criteria

Adults over 18
Cardiac output measurement considered at least 2 hours prior to the study
Affiliation to a French National healthcare system
Written informed consent must be obtained prior to protocol-specific

Exclusion Criteria

Acute or decompensated cardiac or respiratory failure
Allergy to medical adhesives
Patients under reinforced protection, pregnancy, deprived of liberty by judicial or administrative decision, hospitalized without consent or admitted to a health or social establishment for purposes other than research
Inability to understand the instructions or objectives of the study
Clear my responses

How to participate?

Step 1 Connect with a site
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Preferred Language
Other Language
Please verify that you are not a bot.

Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note