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Electric pulses on the wrist may tame colonoscopy pain

NCT ID NCT06813703

Symptom relief Sponsor: First Affiliated Hospital of the Chinese People's Liberation Army Naval Medical 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This trial tests whether a mild electrical stimulation device, applied near the wrist and ankle, can reduce pain during a colonoscopy performed without sedation. Sixty adults aged 18 to 75 will be randomly assigned to receive either real stimulation or a sham version. While the procedure happens, researchers will monitor brain activity using EEG and infrared sensors to see how the stimulation affects pain-related brain regions. The goal is to understand if this technique offers a safe, non-drug way to make unsedated colonoscopy more comfortable.

What this could mean

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

Active substance
Transcutaneous electrical nerve stimulation (TENS) based on wrist-ankle acupuncture theory
What this could lead to
If it works, this could offer a drug-free way to reduce pain during colonoscopy without sedation, making the procedure more comfortable for patients.
What could go wrong
This is a small, early-stage trial, so results may not apply broadly. The sham control uses minimal stimulation, and pain relief may be modest or vary between individuals.

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

60 people

The number who actually took part.

Started

Feb 2025

Finished

Mar 2026

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 75 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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.

1. Inclusion Criteria: * Patients undergoing unsedated colonoscopy are eligible for inclusion in this study. * Aged 18 to 75 years. * Meeting the requirements for colonoscopy, with good cardiopulmonary function and stable vital signs. * A pre-procedural Visual Analog Scale (VAS) pain score of less than 3. 2. Exclusion Criteria: * Participants with speech or cognitive impairments. * Those with acute anal or rectal stenosis, acute perianal or rectal infections, acute diverticulitis, or active inflammatory bowel disease. * Women who are menstruating, pregnant, or breastfeeding. * Patients with active tuberculosis, hemophilia, or advanced malignant tumors. * Individuals with sensory disturbances, implanted pacemakers or defibrillators, or ankle skin ulcers. * Those who have used sedatives or analgesics either long-term or within the past 24 hours. * Individuals with any condition that interferes with EEG-fNIRS signal acquisition, such as cranial abnormalities, implanted metal or electronic devices, epilepsy, or neurological disorders.

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Conditions

The condition(s) this trial relates to.

Pain

As listed by the trial registrant

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

Colonoscopy Pain

Contacts and locations

Locations

  • The First Affiliated Hospital of Naval Medical University

    Shanghai, Shanghai Municipality, 200433, China

More trials for these conditions

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