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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03998930
Other study ID # Local/2017/FF-02
Secondary ID 2017-A02539-44
Status Completed
Phase N/A
First received
Last updated
Start date March 6, 2018
Est. completion date August 21, 2018

Study information

Verified date July 2019
Source Centre Hospitalier Universitaire de Nimes
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The objective of this study is to show that the measurement of auditory and vibro-tactile evoked potentials, or the recording of the EEG signal during a motor imaging task, can be used in routine clinical situations to explore the state of consciousness of subjects in Non-responsive Awakening (or Chronic Vegetative State) or in Minimal Consciousness (or relational state) after a severe brain injury.

Assumptions :

- Correlation between patient response rates obtained with the brain-machine interface and their clinical consciousness score (Coma Recovery Scale Revised score)

- Differentiation of the parameters of the evoked potentials P300 between patients in a vegetative state and those in a state of minimal consciousness


Description:

this is a pilot study on information obtained using a medical device marketed in accordance with CE standards, multicentric and prospective.

The study participation consists of five assessments of the subjects' level of awareness. Each evaluation lasts a total of two hours.

Patients will be assessed in their rooms as follows:

- Clinical evaluation of consciousness by the Coma Recovery Scale Revised (CRS-R), a clinical scale considered as the "gold-standard". Duration 45 minutes (standard care in routine care)

- 15-minute break between the two evaluations.

- Paraclinical evaluation of consciousness by the brain-machine interface by measuring evoked potentials P300 auditory and vibrotactile and recording the EEG signal during a motor imaging task (imagine moving the right or left wrist). Duration 60 minutes.

Instructions are given to the subject via headphones, in French. For the analysis of the evoked potentials, vibrotactile stimuli are delivered to the wrists and ankle of the subject. For auditory evoked potentials, auditory stimuli are delivered by headphones. The volume can be changed.

These assessments that we will perform with the brain-machine interface are similar to the assessments and stimulation of awakening and awareness sessions performed by speech-language pathologists in the departments concerned (presentation of visual and auditory stimuli). CRS-R is used in routine care to assess patients' level of consciousness. There is no recommendation on the type of additional examination to be performed (neuroimaging, EEG, evoked potentials) or on their frequency for the evaluation of patients' consciousness at a distance from their initial brain injury.

Evaluation by the brain-machine interface in the room makes it possible to avoid transport to the complementary examination services (Medical Imaging Services, Neurological Functional Explorations) which cause fatigue (patient whose vigilance is fluctuating) which can make the complementary examination non-contributory. Patients are also not assessed at a date and time set by a complementary examination service and room assessment allows the patient to be assessed in the best conditions for him/her when he/she appears to be at his/her highest level of consciousness and rested (after consultation with the family and/or healthcare team).

Total duration of each session of a maximum of 2 hours, including the installation and uninstallation of the brain-machine interface.

Patients receive their usual treatment and continue to participate in rehabilitation.


Recruitment information / eligibility

Status Completed
Enrollment 9
Est. completion date August 21, 2018
Est. primary completion date August 21, 2018
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- The patient and/or his/her trusted person, relative or legal representative must have given free and informed consent and signed the consent

- The patient must be a member or beneficiary of a health insurance plan

- The patient is available for a 10-day follow-up

- Women and men are included

- The patient is at least 18 years old

- Subjects with conscious disorder, non-respondents after traumatic brain injury (head injury) or non-traumatic brain injury (hemorrhagic and/or ischemic stroke, cerebral anoxia, encephalitis).

Exclusion Criteria:

- Subject is participating in another intervention study

- The subject is in an exclusion period determined by a previous study

- The subject or his or her trusted person, relative or legal representative refuses to sign the consent

- The patient is pregnant or breastfeeding

- The subject has hemodynamic, respiratory and/or neurological instability

- The subject has an ENT infection in the ears (wearing headphones)

- History of auditory and/or sensory sensory impairment

- Psychiatric history (other than anxiety-depressive syndrome)

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Clinical evaluation of consciousness by the Coma Recovery Scale Revised (CRS-R)
Paraclinical evaluation of consciousness by the brain-machine interface by measuring evoked potentials P300 auditory and vibrotactile and recording the EEG signal during a motor imaging task

Locations

Country Name City State
France CHU de Montpellier Montpellier
France Clinique Fontfroide Montpellier
France CHU de Nîmes Nîmes
France Hôpital d'Uzès Uzès

Sponsors (6)

Lead Sponsor Collaborator
Centre Hospitalier Universitaire de Nimes Clinique Fontfroide, Montpellier, France, Hôpital d’Uzès, Uzès, France, IMT Mines Alès, Alès, France, M2H laboratory, Montpellier University, University Hospital, Montpellier

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary correlation between the response of patients obtained with the brain-machine interface (detection of auditory and vibrotactile P300 and modifications of EEG signal during a motor imagery task) and their clinical consciousness score correlation coefficient (units: -1; 1) Inclusion
Primary correlation between the response of patients obtained with the brain-machine interface (detection of auditory and vibrotactile P300 and modifications of EEG signal during a motor imagery task) and their clinical consciousness score correlation coefficient (units: -1; 1) Day 2
Primary correlation between the response of patients obtained with the brain-machine interface (detection of auditory and vibrotactile P300 and modifications of EEG signal during a motor imagery task) and their clinical consciousness score correlation coefficient (units: -1; 1) Day 4
Primary correlation between the response of patients obtained with the brain-machine interface (detection of auditory and vibrotactile P300 and modifications of EEG signal during a motor imagery task) and their clinical consciousness score correlation coefficient (units: -1; 1) Day 6
Primary correlation between the response of patients obtained with the brain-machine interface (detection of auditory and vibrotactile P300 and modifications of EEG signal during a motor imagery task) and their clinical consciousness score correlation coefficient (units: -1; 1) Day 10
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