Transcutaneous Auricular Vagus Nerve Stimulation and Quality of Recovery After Major Noncardiac Surgery
NCT ID: NCT06957912
Last Updated: 2025-06-03
Study Results
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Basic Information
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RECRUITING
NA
320 participants
INTERVENTIONAL
2025-05-13
2026-09-30
Brief Summary
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Detailed Description
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The vagus nerve is a major component of the parasympathetic nervous system and is a critical relay for neuro-metabolic signals between the abdominal viscera and the brain. The ear is the only area where the vagus nerve is distributed on the body surface, and the auricular branch of the vagus nerve can project to nerve centers such as nucleus of solitary tract in the brainstem and the nucleus coeruleus in the midbrain.
Transcutaneous auricular vagus nerve stimulation (taVNS) can stimulate the auricular branch of the vagus nerve through surface electrodes located in the cymba conchae, and thus activate the vagus nerve circuit, regulate the activity of the brainstem, thalamus, and other brain regions, and regulate the related peripheral organs. Available evidences showed that taVNS reduces inflammatory response to surgery through cholinergic anti-inflammatory pathways, improves analgesia by reducing inflammation and activating serotonin and endorphins analgesic pathways, and promotes gastrointestinal function by regulating peristalsis and secretion of the digestive system; it was also found effective in improving sleep quality and relieving anxiolytic and depressive symptoms. The use of taVNS is relative safe; the incidence of adverse event is low and mainly included transient earache, headache, and local tingling, with no causal association to serious adverse events.
The investigators hypothesize that the application of taVNS in patients undergoing major noncardiac surgery may improve early postoperative quality of recovery.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
QUADRUPLE
Study Groups
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Transcutaneous auricular vagus nerve stimulation group
Transcutaneous auricular vagus nerve stimulation
Transcutaneous auricular vagus nerve stimulation
Transcutaneous auricular vagus nerve stimulation is performed using earphone-shaped stimulators (tVNS501, Ruishenan Medical Device, Inc. JiangSu, China) on the left tragus areas of the outer ear for a total of 30 min. Using parameters we have identified through systematic review, electrical stimulation (pulse width: 200-300 μs; frequency: 25 Hz; duty cycles: 50%) is initiated at 200% perceptual threshold (PT) which means the minimum amount of electricity required to perceive electrical stimulation on the skin described as a pricking or tingling sensation. All conscious patients will be told they may or may not feel any sensation from the stimulation.
The stimulation will be performed between 15:00 and 17:00 on the first day before surgery, at least 30 minutes before the start of surgery and between 08:00 and 10:00 on the first to third day after surgery.
Sham stimulation group
Sham stimulation
Sham stimulation
Sham stimulation is performed using earphone-shaped stimulators (tVNS501, Ruishenan Medical Device, Inc. JiangSu, China) on the left tragus areas of the outer ear for a total of 30 min. Using parameters we have identified through systematic review, electrical stimulation (pulse width: 200-300 μs; frequency: 25 Hz; duty cycles: 50%) is initiated at 200% perceptual threshold (PT) which means the minimum amount of electricity required to perceive electrical stimulation on the skin described as a pricking or tingling sensation. And the current will be automatically switched off after 15 s. All conscious patients will be told they may or may not feel any sensation from the stimulation. The stimulation will be performed between 15:00 and 17:00 on the first day before surgery, at least 30 minutes before the start of surgery and between 08:00 and 10:00 on the first to third day after surgery.
Interventions
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Transcutaneous auricular vagus nerve stimulation
Transcutaneous auricular vagus nerve stimulation is performed using earphone-shaped stimulators (tVNS501, Ruishenan Medical Device, Inc. JiangSu, China) on the left tragus areas of the outer ear for a total of 30 min. Using parameters we have identified through systematic review, electrical stimulation (pulse width: 200-300 μs; frequency: 25 Hz; duty cycles: 50%) is initiated at 200% perceptual threshold (PT) which means the minimum amount of electricity required to perceive electrical stimulation on the skin described as a pricking or tingling sensation. All conscious patients will be told they may or may not feel any sensation from the stimulation.
The stimulation will be performed between 15:00 and 17:00 on the first day before surgery, at least 30 minutes before the start of surgery and between 08:00 and 10:00 on the first to third day after surgery.
Sham stimulation
Sham stimulation is performed using earphone-shaped stimulators (tVNS501, Ruishenan Medical Device, Inc. JiangSu, China) on the left tragus areas of the outer ear for a total of 30 min. Using parameters we have identified through systematic review, electrical stimulation (pulse width: 200-300 μs; frequency: 25 Hz; duty cycles: 50%) is initiated at 200% perceptual threshold (PT) which means the minimum amount of electricity required to perceive electrical stimulation on the skin described as a pricking or tingling sensation. And the current will be automatically switched off after 15 s. All conscious patients will be told they may or may not feel any sensation from the stimulation. The stimulation will be performed between 15:00 and 17:00 on the first day before surgery, at least 30 minutes before the start of surgery and between 08:00 and 10:00 on the first to third day after surgery.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
2. Scheduled for elective or limited-time noncardiac surgery with expected duration ≥2 hours.
Exclusion Criteria
2. Recent or long-term use of cholinergic or anticholinergic medications.
3. Neurosurgery.
4. Expected mechanical ventilation with intubation for ≥1 day after surgery.
5. Diagnosed schizophrenia, epilepsy, Parkinson's disease, or myasthenia gravis before surgery.
6. Preoperative left ventricular ejection fraction (LVEF) \<30%, or those with sick sinus syndrome, sinus bradycardia (heart rate \<50 beats per minute), atrioventricular block of grade II or above, or implanted pacemaker.
7. Inability to communicate due to coma, severe dementia, or language barrier before surgery, or unable to cooperate with intervention.
8. American Society of Anesthesiologists physical status grade \>IV, or estimated survival \<24 hours.
18 Years
85 Years
ALL
No
Sponsors
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Peking University First Hospital
OTHER
Responsible Party
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Dong-Xin Wang
Professor and Chairman, Department of Anesthesiology
Principal Investigators
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Dong-Xin Wang, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
Peking University First Hospital
Locations
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Peking University First Hospital
Beijing, Beijing Municipality, China
Countries
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Central Contacts
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Hong Hong, MD
Role: CONTACT
Facility Contacts
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References
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Other Identifiers
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2025-066
Identifier Type: -
Identifier Source: org_study_id
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