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System for Measuring Non-invasive Blood Flow in the Tracheobronchial Mucosa: Validation of Reproducibility

This study has been withdrawn prior to enrollment.
(20131209 Regulatory authorization is currently blocked at the ANSM.)
Sponsor:
ClinicalTrials.gov Identifier:
NCT01402752
First Posted: July 26, 2011
Last Update Posted: June 19, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Centre Hospitalier Universitaire de Nīmes
  Purpose
The primary objective of this study is to evaluate the reproducibility of a method of measuring blood flow rates to the tracheo-bronchial mucosa using diluted dimethyl ether as a tracer.

Condition Intervention
Healthy Biological: Blood flow to the tracheo-bronchial mucosa

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: System for Measuring Non-invasive Blood Flow in the Tracheobronchial Mucosa: Validation of Reproducibility

Further study details as provided by Centre Hospitalier Universitaire de Nīmes:

Primary Outcome Measures:
  • The reproducibility of two measures of Qaw at a five minute interval [ Time Frame: Five minutes ]
    Qaw is the blood flow measured in the tracheobronchial mucosa. Qaw = VDME/(FDME*alpha*10s) where VDME is the volume of dimethyl-ether exhaled (ml), FDME is the mean concentration of dimethyl-ether (%), alpha is the Bunsen coefficient for the dissolution of dimethyl ether in tissues and blood at 37°C (i.e. 9ml/ml).


Secondary Outcome Measures:
  • The time necessary to complete one measure of Qaw (minutes) [ Time Frame: Day 1 ]
    Qaw = blood flow measured in the tracheobronchial mucosa


Enrollment: 0
Study Start Date: November 2013
Estimated Study Completion Date: March 2014
Estimated Primary Completion Date: March 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: All patients
All patients included in this study according to stated inclusion and exclusion criteria.
Biological: Blood flow to the tracheo-bronchial mucosa
Measurement of blood flow to the tracheo-bronchial mucosa via differential absorption of diluted dimethyl ether tracer gas.

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • The patient must have given his/her informed and signed consent
  • The patient must be insured or beneficiary of a health insurance plan

Exclusion Criteria:

  • The patient is under judicial protection, under tutorship or curatorship
  • The patient refuses to sign the consent
  • It is impossible to correctly inform the patient
  • Patient is pregnant
  • Patient is breast feeding
  • The patient is a smoker
  • The patient has, or has a history of, chronic respiratory insufficiency
  • The patient has a contra-indication for a treatment necessary in this study
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01402752


Sponsors and Collaborators
Centre Hospitalier Universitaire de Nīmes
Investigators
Principal Investigator: Charles Le Merre, MD Centre Hospitalier Universitaire de Nîmes
  More Information

Responsible Party: Centre Hospitalier Universitaire de Nīmes
ClinicalTrials.gov Identifier: NCT01402752     History of Changes
Other Study ID Numbers: LOCAL/2011/CLM-02
First Submitted: July 25, 2011
First Posted: July 26, 2011
Last Update Posted: June 19, 2017
Last Verified: June 2017