Effects of Individualized rTMS in DOC Patients

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

RECRUITING

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-07-05

Study Completion Date

2025-03-31

Brief Summary

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Background: Disorder of consciousness(DOC) is a series of arousal and cognitive disorders secondary to the most severe brain injury. Once a patient is diagnosed with a DOC, a poor prognosis is assumed and the rehabilitation for whom is greatly limited. Therefore, the treatment of DOC poses extraordinary challenges. Various treatments protocols have been reported of successful in promoting rehabilitation of DOC patients. Repetitive transcranial magnetic stimulation(rTMS), as a non-invasive brain stimulation technique, has shown potentials for consciousness rehabilitation of DOC patients as it is effective in regulating the central nervous system.

Methods and design: This protocol is a double-blind randomized sham-controlled crossover trial. Totally 30 participants will be randomly assigned to either group 1 or group 2 in a 1:1 ratio, with 15 patients in each group. Each patient will received 20 sessions, in which 10 sessions will be active and 10 will be sham, separated by 10-days washout period. The active-rTMS will include 10 Hz rTMS over the individual-targeted area on each participants. Primary and secondary evaluating indicators will be performed at each baseline and after rTMS treatment. Primary outcome will be determined as behavioral response to treatment as measured using the Coma Recovery Scale - Revised (CRS-R). Resting-state high-density EEG will be also recorded to investigate the neurophysiological correlates by rTMS.

Discussion:This study will contribute to define the role of rTMS for the treatment of DOC patients and characterise the neural correlates of its action. The investigators proposed a method of individualized target selection for DOC patients based on the existing gold standard CRS-R score and MRI, and used a cross randomized controlled trial to verify the role of rTMS in DOC treatment.

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Detailed Description

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Conditions

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Disorder of Consciousness Transcranial Magnetic Stimulation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Sham Stimulation Group for Cross Study

Sham stimulation will be delivered on the patients head using a sham coil in the crossover study.

Group Type SHAM_COMPARATOR

Sham repetitive transcranial magnetic stimulation

Intervention Type DEVICE

The sham coil will be used which has no magnetic field to send to the cerebral cortex while appearing to be the same shape as the active coil, with good approximation of auditory feedback.

Individualized rTMS Group for Cross Study

Real stimulation will be delivered on individualized target using a real coil in the crossover study.

Group Type EXPERIMENTAL

individualized repetitive transcranial magnetic stimulation

Intervention Type DEVICE

During the rTMS-active stage, treatment will be given for 10 consecutive sessions (one session daily). The participants will be placed in the semi-reclining position on either a normal chair or a wheelchair and each stimulation session will last 20 minutes with a frequency of 10 Hz (train duration: 1s; inter-train interval: 5s; 200 effective stimulation series; 2000 pulses at 90% of RMT).

Interventions

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individualized repetitive transcranial magnetic stimulation

During the rTMS-active stage, treatment will be given for 10 consecutive sessions (one session daily). The participants will be placed in the semi-reclining position on either a normal chair or a wheelchair and each stimulation session will last 20 minutes with a frequency of 10 Hz (train duration: 1s; inter-train interval: 5s; 200 effective stimulation series; 2000 pulses at 90% of RMT).

Intervention Type DEVICE

Sham repetitive transcranial magnetic stimulation

The sham coil will be used which has no magnetic field to send to the cerebral cortex while appearing to be the same shape as the active coil, with good approximation of auditory feedback.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. acquired brain injuries less than 1 year and more than 28 days in DOC;
2. clinical diagnosis of DOC Disease;
3. no medical history of neuropsychiatric diseases;
4. no contraindications for rTMS or EEG, no sedatives in use or other drugs that might interfere with brain stimulation, such as Na+ or Ca2+ channel blockers or NMDA receptor antagonists;
5. stable state of disease and vital signs;
6. the families of the patients volunteered the patient to participate in the study and provided signed informed consent;
7. the integrity of the individualized stimulation target cortex are verified by MRI.

Exclusion Criteria

1. patients in other non-invasive or invasive neuroregulation trials;
2. motor evoked potential (MEP) in M1 region cannot be induced by TMS pulse;
3. uncontrolled epilepsy, seizure within 4 weeks before enrollment;
4. metallic implant in the skull, pacemaker, craniotomy under the stimulated site, implanted brain device.

Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No