ClinicalTrials.gg
TerminatedNCT03292159Updated Sep 21, 2021

Transcutaneous Vagus Nerve Stimulation for Motor Recovery After Stroke

A Phase 1/2 interventional study of Active RAVANS concurrent with arm motor training and Inactive RAVANS concurrent with arm motor training in Stroke and Upper Extremity Paresis, sponsored by Massachusetts General Hospital. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-09-21.

Sponsored by Massachusetts General Hospital · Phase 1/2, Interventional, and Treatment

Why this study was terminated
funding not continued
Phase
Phase 1/2
Study type
Interventional
Enrollment
6
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 10 studies in Stroke by Massachusetts General Hospital — 4 open to participants now, 4 under way, none of them phase 3. Stroke · Massachusetts General Hospital.

Started
2018
the only one that year
Phase 1/2
Only one
of the 10
Registered
3rd of 10
by date

Among the 10 studies in Stroke by Massachusetts General Hospital, this one is the only one that started in 2018, is the only one in phase 1/2, and was the 3rd registered.

Stroke

8,255 studies on the registry are indexed under Stroke; 2,056 are open to participants now.

This study's enrollment of 6 is below the median of 49 across 6,024 interventional studies indexed under Stroke.

Browse Stroke studies →

Open to participants now

4 of the 10 studies in Stroke by Massachusetts General Hospital are open now, in 1 country. Each count lists the studies.

All 4 open studies →

Where they have run

Who these studies take

Of the 1,415 Stroke studies recruiting now, 697 (49%) set no upper age limit and 280 (20%) stop at 75 or younger; 77 take children under 18; 196 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 10 studies in Stroke by Massachusetts General Hospital, or all of them as a file.
02

Study summary

This study will evaluate the safety and effectiveness of Respiratory-gated Auricular Vagal Afferent Nerve Stimulation (RAVANS) for improving motor recovery after stroke. Subacute stroke patients will receive RAVANS or sham stimulation concurrent with arm motor training during 10 intervention sessions occurring daily for 30 minutes over 2 weeks. The safety and improvements in arm motor function after the intervention will be compared in patients receiving RAVANS to those receiving sham stimulation.

Read the detailed description

This study will evaluate the safety, feasibility and effectiveness of Respiratory-gated Auricular Vagal Afferent Nerve Stimulation (RAVANS) for improving motor recovery after stroke. Subacute stroke patients will be randomized to RAVANS or sham stimulation groups. Patients will receive RAVANS or sham stimulation concurrent with arm motor training during 10 sessions occurring daily for 30 minutes over 2 weeks. Safety will be compared in patients receiving RAVANS to those receiving sham stimulation. Feasibility will be evaluated by recruitment into the study and retention of enrolled patients. Changes in arm motor function will be compared between RAVANS and sham stimulation groups from baseline to immediately after the intervention period and to function at 3-months after stroke.

03

Conditions studied

  • Stroke
  • Upper Extremity Paresis

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Keywords

  • stroke
  • vagus nerve stimulation
  • upper extremity paresis
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Supratentorial ischemic or hemorrhagic stroke incurred 4-30 days prior;
  • Contralesional UL motor impairment defined by NIHSS item 5 score 1 or 2 (scale 0-4);
  • Age ≥ 18;
  • Able to provide written .

Exclusion criteria

Exclusion Criteria:

  • Implanted electronic device (e.g., pacemaker, neurostimulator);
  • Pregnancy;
  • Major psychiatric or medical condition that could interfere with study participation;
  • Medical condition affecting left ear that could interfere with delivering RAVANS (e.g., wound, infection, , hypoesthesia);
  • Significant pre-existing disability of stroke-affected UL in activities of daily living due to prior stroke or other medical cause defined by Stroke Impact Scale item 7 (SIS-hand) mean score \< 4 (scale: 0-5);
  • History of seizure during year before stroke or > 1 post-stroke seizure;
  • Significant cognitive or language impairment that would interfere with or study participation;
  • Severe dysphagia;
  • Bradycardia defined as resting heart rate \< 50 bpm;
  • Nonsustained ventricular tachycardia;
  • Cardiac conduction disorder (i.e., bundle branch block, heart block, long Q-T syndrome);
  • History of asystole;
  • History of recurrent vaso-vagal syncope;
  • Hypotension defined as blood pressure \< 90/60 mmHg.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    RAVANS

    Device: Active RAVANS concurrent with arm motor training

  • Sham comparator
    Sham stimulation

    Device: Inactive RAVANS concurrent with arm motor training

Interventions

  • DeviceActive RAVANS concurrent with arm motor training

    Patient receives non-painful, sensory-level stimulation to the skin of left outer ear, where nerve endings of the auricular branch of the vagus nerve reside, while participating in arm motor training

  • DeviceInactive RAVANS concurrent with arm motor training

    Patient does not receive stimulation delivered to the skin of left outer ear while participating in arm motor training

06

What researchers measure

Primary outcomes

  1. Upper extremity motor impairment

    Change in upper extremity subtest of Fugl Meyer Assessment (FMA-UE) score

    Time frame: Baseline to just after 10 intervention sessions, and baseline to 3 months post-stroke

Secondary outcomes

  1. Upper extremity motor function

    Change in Action Research Arm Test (ARAT) score

    Time frame: Baseline to just after 10 intervention sessions, and baseline to 3 months post-stroke

  2. Grip force control

    Change in accuracy, variability and temporal structure of performance on a grip force control task

    Time frame: Baseline to just after 10 intervention sessions, and baseline to 3 months post-stroke

  3. Upper extremity disability

    Change in hand subtest of Stroke Impact Scale (SIS-hand) score

    Time frame: Baseline to 3 months post-stroke

  4. Mood state, anxiety and depression

    Change in Hospital Anxiety and Depression Scale (HADS) scores

    Time frame: Baseline to 3 months post-stroke

07

Study locations

1 site
  • Spaulding Rehabilitation Hospital
    Boston, Massachusetts 02129, United States
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from May 2018 to primary completion in Nov 2018, 6 months.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 20, 2017
First posted
Sep 25, 2017
StartActual
May 17, 2018
Primary completionActual
Nov 20, 2018
CompletionActual
Nov 20, 2018
Last update
Sep 21, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 21, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03292159
Collaborators
Dana Foundation, Spaulding Rehabilitation Hospital
Responsible party
Judith Schaechter (Assistant Professor, Department of Radiology, Harvard Medical School, Massachusetts General Hospital) — Principal investigator
First posted
Sep 25, 2017
Start date
May 17, 2018
Primary completion
Nov 20, 2018
Completion
Nov 20, 2018
Last update
Sep 21, 2021

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Sep 2021. You cannot join it, but the record below documents what was studied.

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