VNS During Rehabilitation for Improved Upper Limb Motor Function After Stroke

Completed · Not applicable

Conditions studied: Stroke, Upper Limb Deficits

In brief

The primary study objectives are to assess the safety and feasibility of the therapy, including the surgical intervention and stimulation, as well as to provide information on the appropriateness of the study test measures (assessments) and to provide a basis for sample size calculations for a larger, pivotal study.

Key facts

Study ID

NCT02243020

Run by

MicroTransponder Inc.

People needed

17

Starts

2014-10-01

Expected to finish

2022-06-01

Last updated by the study team

2022-09-15

Who can join

Age: 30 and older, up to 80. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• History of ischemic stroke that occurred at least 4 months prior to enrollment, but not more than 24 months prior
• Age >30 years and <80 years
• Right or left sided weakness of upper extremity
• UEFM score within designated range.
• At least 10 degrees of wrist extension, 10° of thumb abduction/extension, and at least 10° of extension in at least 2 additional digits

You may not qualify if…

• History of hemorrhagic stroke
• Any deficits in language or cognitive functioning that hinders participation, for example, (aphasia) or unable to follow 2 step commands.
• Significant sensory loss.
• Presence of ongoing dysphagia or aspiration difficulties.
• Active major neurological or psychiatric diagnosis that would likely interfere with study protocol including prior history of brain lesions (including dementia, etc.), and current alcohol abuse, drug abuse, or epilepsy.
• Subject receiving any therapy (medication or otherwise) at study entry that would interfere with VNS (e.g. drugs that interfere with neurotransmitter mechanisms). Additionally, no psychoactive medications - including nicotine - may be used during the acute study.
• Prior injury to vagus nerve - either bilateral or unilateral (e.g., injury during carotid endarterectomy)
• Severe depression
• Not considered candidate for a device implant surgery (history of adverse reactions to anesthetics, poor surgical candidate in surgeon's opinion, etc.)
• Any other implanted device such as a pacemaker or other neurostimulator; any other investigational device or drug
• Medical or mental instability (diagnosis of personality disorder, psychosis, or substance abuse)
• Pregnant or plan on becoming pregnant or breastfeeding during the study period
• Currently require, or likely to require, diathermy during the study duration
• Any health problem requiring surveillance with MRI imaging
• Active rehabilitation within 4-weeks prior to therapy
• Botox injections or any other non-study active rehabilitation of the upper extremity 4-weeks prior to and during therapy
• Severe spasticity of the upper limb

Where it is running

• University of Minnesota — Minneapolis, Minnesota, United States
• UT Southwestern — Dallas, Texas, United States
• UT Houston — Houston, Texas, United States

Full record on ClinicalTrials.gov

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