Impact of the Inspiratory Cortical Control on the Outcome of the Ventilatory Weaning Test in Patients Intubated in Resuscitation

January 6, 2026 updated by: Poitiers University Hospital

In case of respiratory distress, patients are intubated to be connected to an artificial respirator to ensure gas exchanges. Before any ventilatory weaning, a breathing test in spontaneous ventilation under artificial nose is practiced. The patient keeps the endotracheal tube but is no longer assisted by the ventilator. Mortality is markedly increased with the prolongation of the weaning period. Despite the presence of all weaning criteria and the success of a breathing test in spontaneous ventilation under artificial nose, failure of extubation occurs in 20% of patients.

Experimental application of an additional inspiratory load in awake healthy subjects causes a compensatory increase in respiratory work to maintain effective ventilation, and the subject does not develop hypoventilation. This respiratory drive to breathe has been demonstrated by quantified electroencephalography in inspiratory load tests in the form of pre-inspiratory negative deflections of low amplitude similar to the potential described during the preparation of the voluntary movement of a limb. These inspiratory pre-motor potentials begin about 2.5 seconds before the start of a movement in the additional motor area.

Does the simple and noninvasive analysis of inspiratory cortical control during the spontaneous ventilation breath test under artificial nose predict the outcome of this test as well as weaning at 7 days?

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

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Intervention / Treatment

Intervention / Treatment

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Study Type

Study Type

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Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
70

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

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Study Contact

Study Contact

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Study Locations

  • France
    • Vienne
      • Poitiers, Vienne, France, 86000
        • University Hospital Center of Poitiers

Participation Criteria

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Eligibility Criteria

Eligibility Criteria

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Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • All intubated-ventilated patients eligible for an artificial nose breathing test in spontaneous ventilation, according to the physician in charge, and to the protocol of the medical resuscitation service and good clinical practice,
  • at least 18 years of age;
  • intubated-ventilated for at least 24 hours;
  • express consent given by patients or "relatives" after clear and fair information on the study.

Exclusion Criteria:

  • Patients are secondarily excluded from the study only if EEG or pressure monitoring are uninterpretable.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Successful weaning
Patients extubated after the success of the breathing test in spontaneous ventilation under artificial nose and always extubated after seven days.
Device: Electroencephalography
Simplified electroencephalography using three electroencephalogram electrodes and two electro-oculogram electrodes for the measurement of central respiratory control through the inspiratory premotor potentials.
Experimental: Failure to wean
Patients who failed the breathing test in spontaneous ventilation under artificial nose and not extubated or patients extubated after the success of the weaning test in spontaneous ventilation under artificial nose but reintubated within seven days.
Device: Electroencephalography
Simplified electroencephalography using three electroencephalogram electrodes and two electro-oculogram electrodes for the measurement of central respiratory control through the inspiratory premotor potentials.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Magnitude of Inspiratory Premotor Potentials
Time Frame: Fifteen minutes
Amplitude in microvolts of the inspiratory premotor potentials measured during the first 15 minutes of the artificial noses breathing test in patients who successfully passed their ventilatory withdrawal and in patients who failed their withdrawal.
Fifteen minutes

Collaborators and Investigators

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Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Poitiers University Hospital

Study record dates

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Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 21, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 30, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 30, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 23, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 8, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 13, 2017

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 7, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BRAIN-WEAN

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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