EXPRE-SON-REA : Expressive Own Names in Neurophysiologic Assessment of Comatose Patients

NCT ID: NCT04798508

Last Updated: 2021-03-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

78 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-07-30

Study Completion Date

2022-10-30

Brief Summary

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Evaluating the neurologic prognosis in disorders of consciousness (DOC) patients is still a crucial issue in intensive care units.

Neurophysiology allows the investigators to record cerebral responses of patients to auditory stimuli and in particularly to their own name. Numerous studies try to improve the relevance of the auditory stimuli used in this paradigm.

Here the investigators assess if the use of own name stimuli uttered by more expressive voices (for example smiling voices) modulates the cerebral responses recorded. They then correlate these cerebral responses to the neurologic prognosis at three months.

Detailed Description

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Late auditory evoked potentials (as P3 wave) are used in neurophysiology to assess the level of consciousness in DOC (disorder of consciousness) patients. The P3 wave, elicited by listening standard and deviant stimuli, corresponds to the activation of a frontoparietal network and is considered to reflect a cognitive attention task. Using the own name of the patient as deviant stimuli improve the ability to detect the P3 wave because of the particularly relevance of this stimulus for the patient. However the correlation of this P3 wave and neurologic prognosis is still imperfect and depends on the etiology of the DOC.

In human cognition, to identify the expressivity valence of a voice is essential. Neural processing of expressive voices involves more widespread brain areas than neutral voices processing.

Here the investigators assume that using own name stimuli uttered by more expressive voices (positive : smiling voice or negative : rough voice) should recruit more widespread brain areas and modulate the cerebral responses recorded. The investigators then evaluate if these cerebral responses are relevant markers of consciousness and correlate them to neurologic prognosis at three months.

Conditions

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Comatose Neurophysiologic Abnormality

Study Design

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Allocation Method

NA

Intervention Model

SEQUENTIAL

Open and prospective study.

Evoked related potentials are recorded for each participant while they listen 3 paradigms successively and in a random order:

i) their own name uttered by a smiling voice ii) their own name uttered by a neutral voice iii) their own name uttered by a rough voice
Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Whole group

The whole group listen successively the 3 paradigms :

* P3 own-name recorded by listening to a smiling voice
* P3 own-name recorded by listening to a neutral voice
* P3 own-name recorded by listening to a rough voice

Group Type OTHER

Evoked related potential - P3 paradigm

Intervention Type OTHER

Evoked related potential are performed for each patient during listen to its own name uttered by i) a neutral voice ii) a smiling voice iii) a rough voice

Interventions

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Evoked related potential - P3 paradigm

Evoked related potential are performed for each patient during listen to its own name uttered by i) a neutral voice ii) a smiling voice iii) a rough voice

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age over 18
* Disorder of consciousness defined as :

Glasgow coma scale \< 8 or \>8 but

* eyes opening to pain only
* No response to basic command
* Available neuro-imagery (CT-scan or MRI)
* Normal temperature (no fever or hypothermia)
* Normal blood pressure during neurophysiologic evaluation
* Given consent from relatives

Exclusion Criteria

* Brain death
* Known deafness
* Severe sepsis uncontrolled during neurophysiologic evaluation
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Centre Hospitalier St Anne

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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GHU Paris Psychiatrie Neurosciences

Paris, , France

Site Status RECRUITING

Countries

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France

Central Contacts

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Estelle Pruvost-Robieux, MD

Role: CONTACT

+ 33 1 45 65 81 89

Martine Gavaret, Professor

Role: CONTACT

+ 33 1 45 65 81 89

Facility Contacts

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Estelle Pruvost-Robieux, MD

Role: primary

+33 1 45 65 81 89

Other Identifiers

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2020-A00747-32

Identifier Type: -

Identifier Source: org_study_id

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