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Electric head zap may ease pain after sleep apnea surgery

NCT ID NCT03735004

Symptom relief Sponsor: Stanford University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a mild electrical current applied to the head (called transcranial electrostimulation, or TES) can help control pain after major sleep apnea surgery. 45 patients received TES along with standard care. The goal was to see if TES reduces pain and the need for opioid painkillers, which can be risky for sleep apnea patients.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
transcranial electrostimulation (TES) device
What this could lead to
If it works, this could offer a drug-free way to manage pain after sleep apnea surgery, reducing reliance on opioids.
What could go wrong
This is a small, completed study with only 45 participants. Results may not apply to everyone, and the effect may be modest.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

45 people

The number who actually took part.

Started

Jul 2017

Finished

Feb 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Patients with moderate-to-severe OSA, presenting for PPP and MMA surgeries. All patients will be American Society of Anesthesiology (ASA) physical status II-III. The subjects should understand informed consent and study instructions. Exclusion Criteria: 1. Patients with a known or suspected genetic susceptibility to malignant hyperthermia, or known sensitivity to Sevoflurane, an inhaled anesthetic agent. 2. Pregnant patients. 3. Patients who are unable to understand the questionnaires or the visual analogue scale (VAS) pain scores, or to keep home diaries. 4. Patients with clinically-significant psychological disorders, psychiatric illness or treatment. 5. Alcohol and drug-abusing patients. 6. Patients with the history of seizures. 7. Patients with the documented or suspected organic brain or psychiatric disease, in particular with the history of hallucinations and delusions. 8. Patients with history of significant eye disease, or head or eye injury, which led to alteration of the cranial anatomy or metallic intracranial implants. 9. Patients with the history of significant surgery of the head and/or eye. 10. Patients with skin lesions and/or defects over the areas where TES electrodes will be applied. 11. Patients with implanted medical devices, including cardiac pacemakers. 12. Patients who participate in other research protocols that may interfere with the study outcomes and objectives. 13. Other patients that may be excluded by the investigator, based on medical history and physical examination.

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Conditions

The condition(s) this trial relates to.

obstructive sleep apnea syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Transcranial electrical stimulation

Contacts and locations

Locations

  • Stanford Univeristy Medical Center

    Stanford, California, 94305, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.