Using auricular vagus nerve stimulation to improve outcomes after subarachnoid hemorrhage

Transcutaneous Auricular Vagus Nerve Stimulation Following Spontaneous Subarachnoid Hemorrhage

Not applicable Interventional Washington University School of Medicine · NCT04557618

This study is testing if a new treatment using ear stimulation can help people recover better and have fewer complications after a brain bleed.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorWashington University School of Medicine Academic / other
Drugs / interventionschemotherapy
Locations1 site (St Louis, Missouri)
Trial IDNCT04557618 on ClinicalTrials.gov

What this trial studies

This study evaluates the effects of non-invasive auricular vagal nerve stimulation (VNS) on inflammatory markers and clinical outcomes in patients with spontaneous subarachnoid hemorrhage (SAH). Participants will be randomly assigned to receive either active VNS or sham stimulation, with blood and cerebrospinal fluid samples collected to assess inflammation. The study will track various clinical events during hospitalization and measure functional outcomes at discharge and follow-up visits over two years. The goal is to determine if VNS can improve recovery and reduce complications associated with SAH.

Who should consider this trial

Good fit: Ideal candidates are individuals diagnosed with spontaneous subarachnoid hemorrhage.

Not a fit: Patients with trauma-induced subarachnoid hemorrhage or those on immunosuppressive medications may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved recovery and reduced complications for patients following subarachnoid hemorrhage.

How similar studies have performed: Previous studies have shown promising results for vagal nerve stimulation in inflammatory conditions, suggesting potential success for this approach in SAH.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Spontaneous subarachnoid hemorrhage

Exclusion Criteria:

* Trauma-induced subarachnoid hemorrhage
* Ongoing chemotherapy
* Taking immunosuppressive medications for other medical illnesses
* Presence of a pacemaker
* Prolonged bradycardia at time of admission

Where this trial is running

St Louis, Missouri

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Subarachnoid HemorrhageVagal nerve stimulation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.