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Transcutaneous auricular vagal nerve stimulation for consciousness recovery in patients with prolonged disorders of consciousness: Study protocol for a multicenter, triple-blind, randomized controlled trial

Transcutaneous auricular vagal nerve stimulation for consciousness recovery in patients with prolonged disorders of consciousness: Study protocol for a multicenter, triple-blind, randomized controlled trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2300073950
Enrollment
Unknown
Registered
2023-07-26
Start date
2023-07-26
Completion date
Unknown
Last updated
2025-09-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prolonged disorders of consciousness

Interventions

taVNS group:Patients in the taVNS group will be treated with taVNS plus conventional therapy. An electrical stimulator (tVNS501, Changzhou Rishena Medical Device Co., Ltd., Jiangsu, China) will be app
Control group:Patients in the control groups will receive a taVNS placebo procedure in addition to conventional therapy. For the taVNS placebo, the stimulator will offer a built-in placebo mode: upon

Sponsors

The First Affiliated Hospital of Nanjing Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Aged >= 18 years; 2. Diagnosed as VS/UWS or MCS with CRS-R; 3. With onset of disease at least 28 days and less than 1 year before enrollment; 4. Informed consent given by legal guardian.

Exclusion criteria

Exclusion criteria: 1. Anyone who has local lesions, rash and infection at the left cymba conchae; 2. With heart rate less than 60 beats/min; 3. History of implanted excitatory device (e.g., pacemaker, implanted vagus nerve electrical stimulator, deep brain electrical stimulator, electrical spinal cord stimulator…); 4. Deep sedation condition caused by general anaesthetics or sedatives (e.g., propofol, benzodiazepines); 5. Complications such as acute myocardial infarction, pulmonary embolism, acute infection, sepsis, severe anemia or other clinical critical condition; 6. Participating in other clinical studies.

Design outcomes

Primary

MeasureTime frame
The rate of improved consciousness level at weeks 4 after trial initiation;

Secondary

MeasureTime frame
Coma Recovery Scale-Revised total scores and subscale scores;Glasgow Coma Scale total scores and subscale scores;Full Outline of UnResponsiveness Scale total scores and subscale scores;Electrocardiogram parameters;brainstem auditory evoked potential;Upper-limb somatosensory evoked potential;Neuroimaging parameters based on positron emission tomography/functional magnetic resonance imaging ;Serum biomarkers associated with conscious levels;Adverse events;

Countries

China

Contacts

Public ContactLu Xiao

The First Affiliated Hospital of Nanjing Medical University

luxiao1972@163.com+86 138 1395 8023

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 6, 2026