About this trial
This study will evaluate whether non-invasive auricular vagal nerve stimulation lowers inflammatory markers, and improves outcomes following intracerebral hemorrhage.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Adult patients who present with a spontaneous supratentorial intracerebral hemorrhage (ICH) to Barnes Jewish Hospital
Disqualifiers
Patients < 18 years old
Patients with a presumed traumatic etiology for their ICH, infratentorial location, ICH volume > 60 ml or < 10 ml, at risk of imminent death (e.g. Glasgow Coma Scale, GCS of 3 or one or more pupils unreactive), surgical intervention imminently planned (not including ventriculostomy)
Patients undergoing active cancer therapy
Patients with sustained bradycardia on arrival with a heart rate < 50 beats per minute.
Trial design
Parallel
Treatments tested in this trial
Auricular Vagus Nerve Stimulation
DeviceTranscutaneous auricular vagal nerve stimulation
Sham Auricular Vagus nerve Stimulation
DeviceTranscutaneous auricular vagal nerve ear clip applied without current
Treatment groups
Trial outcomes
Primary outcomes
Change in the inflammatory marker IL-6 in plasma
Blood samples collected on days 1, 4, 7, 10, and 14 (Day 1 serves as baseline, prior to first treatment). Inflammatory markers will be reported in pg/mL.
Growth of perihematomal edema
Change in edema extension distance (baseline vs. peak) will be compared between groups, via quantitative assessment of serial computed tomography (CT) scans obtained on day 1, 4, 7, 10, and 14 (Day 1 serves as baseline, prior to first treatment).
Neurological worsening
Occurrence of clinical deterioration due to edema by criteria of 1) a reduction in GCS by 2 points or greater that persists for at least one hour, 2) worsening focal neurological deficits (NIHSS increase by at least 4 points), excluding other causes, or 3) need for surgical intervention or medical treatments for edema (osmotic therapies).
Secondary outcomes
Change in additional inflammatory markers in plasma
Blood samples collected on days 1, 4, 7, 10, and 14 to evaluate for IL-1b, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-17a, GM-CSF, IFN gamma, and TNF-α. Inflammatory markers will be reported in pg/mL.
Change in inflammatory markers in cerebrospinal fluid
Cerebrospinal fluid samples collected on days 1, 4, 7, 10, and 14 to evaluate for IL-1b, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-17a, GM-CSF, IFN gamma, and TNF-α. Inflammatory markers will be reported in pg/mL.
Relative perihematomal edema
Relative perihematomal edema volume, the ratio of perihematoma volume to intracerebral hematoma volume
Neurological outcome
Modified Rankin Scale for Neurological Disability (minimum score 0, maximum score 6, better outcomes have lower scores)
Sponsors and contacts
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