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Silence during surgery may ease Post-Op pain

NCT ID NCT06316440

Symptom relief Sponsor: The Second Affiliated Hospital of Chongqing 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether wearing noise-cancelling earphones during general anesthesia can lower the chance of moderate to severe pain after major abdominal surgery. Researchers enrolled 304 adults aged 18-70 undergoing elective surgery lasting at least 2 hours. The goal was to see if blocking out operating room noise could reduce pain scores and the amount of pain medication needed.

What this could mean

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

Active substance
noise-cancelling earphones
What this could lead to
If it works, this simple, low-cost approach could help reduce pain and the need for painkillers after major abdominal surgery.
What could go wrong
This is a single completed study with 304 participants. The effect may be small or not apply to all types of surgery or patients.

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

304 people

The number who actually took part.

Started

Mar 2024

Finished

Jun 2025

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

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.

Inclusion Criteria: * Between the ages of 18 and 70, both male and female. * American Society of Anesthesiologists Classification 1-3 * Patients undergoing elective major abdominal surgery under general anesthesia(Surgery time ≥ 2h) * Voluntarily accept patient controlled intravenous analgesia and signed informed consent Exclusion Criteria: * Patients with previous severe disease * Patients with hearing abnormalities * Patients requiring mechanical ventilation or undergoing epidural catheters or other types of regional anesthesia after surgery * Patients with chronic preoperative pain and/or long-term analgesic use * Patients who could not cooperate with the study for any reason

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Conditions

The condition(s) this trial relates to.

Pain, Postoperative

As listed by the trial registrant

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

Postoperative pain

Contacts and locations

Locations

  • Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University

    Chongqing, Chongqing Municipality, 400010, China

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