Transcutaneous Auricular Vagus Nerve Stimulation in Patients With Stroke
INPULSE
Effectiveness of Transcutaneous Auricular Vagus Nerve Stimulation on Upper Limb Motor Recovery After Stroke
1 other identifier
interventional
30
1 country
1
Brief Summary
This study will evaluate the effects of transcutaneous vagus nerve stimulation in combination with physical rehabilitation on upper limb motor function of patients with stroke.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Apr 2025
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 19, 2025
CompletedFirst Posted
Study publicly available on registry
March 26, 2025
CompletedStudy Start
First participant enrolled
April 1, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 24, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 24, 2025
CompletedMarch 30, 2025
March 1, 2025
8 months
March 19, 2025
March 25, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Motor function of the upper limb
Efficacy will be assessed by evaluating the change in motor function of the upper limb, the next day and 30 days after the end of the intervention. The motor function of the upper limb will be assessed by means of the Fugl-Meyer scale score. The motor function component ranges from 0 to 100, where higher scores indicate better motor recovery.
1 day and 30 days after the end of the intervention
Arm and hand mobility Description:
Change in arm mobility the next day and 30 days after the end of the intervention. Arm and hand mobility will be assessed by the ARAT test. The maximum score on the ARAT is 57 points ( 0 to 57). A higher score indicates better arm function.
1 day and 30 days after the end of the intervention
Secondary Outcomes (2)
Hospital anxiety and depression
1 day and 30 days after the end of the intervention
Medical device safety
During the intervention period.
Study Arms (2)
Transcutaneous auricular vagus nerve stimulation + rehabilitation therapy
EXPERIMENTALSham stimulation + rehabilitation therapy
SHAM COMPARATORInterventions
Transcutaneous auricular vagus nerve stimulation using INPULSE 3 times a week for six consecutive weeks. The stimulation parameters will be a frequency of 30Hz with a pulse width of 300 us and a stimulation time of 1.5 seconds for each respiratory cycle. The electrical current will be gradually increased to a maximum of 5 mA (0.25-mA increments) to allow adaptation to the stimulation until a comfortable tolerance level is achieved. Patients will receive physical rehabilitation therapy during stimulation, which will include reaching and grasping exercises, gross movements, turning objects, simulating specific tasks, inserting objects, opening and closing containers.
Patients will receive physical rehabilitation therapy during placebo stimulation (No electrical stimulation), including reaching and grasping exercises, gross movements, turning objects, simulating specific tasks, inserting objects, opening and closing containers.
Eligibility Criteria
You may qualify if:
- Age \>18 years and \<75 years
- Unilateral supratentorial ischemic stroke that occurred at least 7 days but not more 30 days before enrollment.
- Modified Rankin Scale between 0 and 1 before stroke
- Contralesional UL motor impairment defined by NIHSS item 5 score ≥ 1 to ≤ 3.
- Ability to provide written informed consent.
- Hemodynamically stable patients.
- Patients residing in the metropolitan area of Bucaramanga.
You may not qualify if:
- Significant cognitive or language impairment that would interfere with study participation or informed consent. This criterion will be defined by NIHSS item 1a-c score \> 2, item 9 score \> 1, item 11 score = 2.
- Medical conditions that could interfere with study participation, for example ear infections or skin wounds.
- Bradycardia (\< 50 bpm) or hypotension (\< 90/60 mmHg)
- Significant pre-existing disability
- History of stroke
- History of cardiac arrhythmia
- History of severe head trauma, brain surgery, deep brain stimulation, or brain injuries of other etiologies.
- Pregnant or planning on becoming pregnant or breastfeeding during the study period.
- Medical or mental instability (diagnosis of personality disorder, psychosis, or substance abuse) that would prevent subject from meeting protocol timeline.
- Subjects who are currently in another clinical trial or plan to do so during the study period.
- Patient receiving any therapy at study entry that would interfere with VNS (e.g., drugs that interfere with neurotransmitter mechanisms: anticholinergics, adrenergic blockers, etc.).
- Prior injury to vagus nerve.
- Any other implanted device such as a pacemaker or other neurostimulator; any other investigational device or drug.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Neurology Center of Excellence - Hospital Internacional de Colombia - Fundación cardiovascular de Colombia
Piedecuesta, Santander Department, Colombia
Related Publications (9)
Dawson J, Liu CY, Francisco GE, Cramer SC, Wolf SL, Dixit A, Alexander J, Ali R, Brown BL, Feng W, DeMark L, Hochberg LR, Kautz SA, Majid A, O'Dell MW, Pierce D, Prudente CN, Redgrave J, Turner DL, Engineer ND, Kimberley TJ. Vagus nerve stimulation paired with rehabilitation for upper limb motor function after ischaemic stroke (VNS-REHAB): a randomised, blinded, pivotal, device trial. Lancet. 2021 Apr 24;397(10284):1545-1553. doi: 10.1016/S0140-6736(21)00475-X.
PMID: 33894832BACKGROUNDYuan H, Silberstein SD. Vagus Nerve and Vagus Nerve Stimulation, a Comprehensive Review: Part II. Headache. 2016 Feb;56(2):259-66. doi: 10.1111/head.12650. Epub 2015 Sep 18.
PMID: 26381725BACKGROUNDYap JYY, Keatch C, Lambert E, Woods W, Stoddart PR, Kameneva T. Critical Review of Transcutaneous Vagus Nerve Stimulation: Challenges for Translation to Clinical Practice. Front Neurosci. 2020 Apr 28;14:284. doi: 10.3389/fnins.2020.00284. eCollection 2020.
PMID: 32410932BACKGROUNDvan der Meij A, Wermer MJH. Vagus nerve stimulation: a potential new treatment for ischaemic stroke. Lancet. 2021 Apr 24;397(10284):1520-1521. doi: 10.1016/S0140-6736(21)00667-X. No abstract available.
PMID: 33894818BACKGROUNDKong KH, Chua KS, Lee J. Recovery of upper limb dexterity in patients more than 1 year after stroke: Frequency, clinical correlates and predictors. NeuroRehabilitation. 2011;28(2):105-11. doi: 10.3233/NRE-2011-0639.
PMID: 21447911BACKGROUNDDancause N, Nudo RJ. Shaping plasticity to enhance recovery after injury. Prog Brain Res. 2011;192:273-95. doi: 10.1016/B978-0-444-53355-5.00015-4.
PMID: 21763529BACKGROUNDCramer SC. Repairing the human brain after stroke: I. Mechanisms of spontaneous recovery. Ann Neurol. 2008 Mar;63(3):272-87. doi: 10.1002/ana.21393.
PMID: 18383072BACKGROUNDNakayama H, Jorgensen HS, Raaschou HO, Olsen TS. Recovery of upper extremity function in stroke patients: the Copenhagen Stroke Study. Arch Phys Med Rehabil. 1994 Apr;75(4):394-8. doi: 10.1016/0003-9993(94)90161-9.
PMID: 8172497BACKGROUNDSacco RL, Kasner SE, Broderick JP, Caplan LR, Connors JJ, Culebras A, Elkind MS, George MG, Hamdan AD, Higashida RT, Hoh BL, Janis LS, Kase CS, Kleindorfer DO, Lee JM, Moseley ME, Peterson ED, Turan TN, Valderrama AL, Vinters HV; American Heart Association Stroke Council, Council on Cardiovascular Surgery and Anesthesia; Council on Cardiovascular Radiology and Intervention; Council on Cardiovascular and Stroke Nursing; Council on Epidemiology and Prevention; Council on Peripheral Vascular Disease; Council on Nutrition, Physical Activity and Metabolism. An updated definition of stroke for the 21st century: a statement for healthcare professionals from the American Heart Association/American Stroke Association. Stroke. 2013 Jul;44(7):2064-89. doi: 10.1161/STR.0b013e318296aeca. Epub 2013 May 7.
PMID: 23652265BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Sandra M Sanabria, Bacteriologist, PhD
Fundación Cardiovascular de Colombia
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, OUTCOMES ASSESSOR
- Masking Details
- A double blinding will be performed. This information will be guaranteed to remain masked until after the analysis is performed.
- Purpose
- SUPPORTIVE CARE
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 19, 2025
First Posted
March 26, 2025
Study Start
April 1, 2025
Primary Completion
November 24, 2025
Study Completion
December 24, 2025
Last Updated
March 30, 2025
Record last verified: 2025-03