Effect of Noise Isolation on the Incidence of Moderate to Severe Postoperative Pain

March 9, 2026 updated by: The Second Affiliated Hospital of Chongqing Medical University

Effect of Noise Isolation During General Anesthesia on the Incidence of Moderate to Severe Postoperative Pain in Patients Undergoing Major Abdominal Surgery

To investigate the effect of noise isolation during general anesthesia on the incidence of moderate to severe postoperative pain in patients undergoing major abdominal surgery. The aim of this study was to determine whether noise isolation can reduce the Incidence of moderate to severe postoperative pain and analgesic use.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
304

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Chongqing Municipality
      • Chongqing, Chongqing Municipality, China, 400010
        • Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Noise-canceling Group
Intraoperative intervention with noise-canceling earphones was performed to isolate the noise
Device: Wear noise-cancelling earphones
Intervention of wearing noise-canceling earphones after general anesthesia
No Intervention: Control Group
After general anesthesia, the intervention of wearing noise-canceling earphones was not given

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
The incidence of moderate to severe postoperative pain
Time Frame: From ending of the surgery to 24 hours postoperatively
Moderate to severe postoperative pain：NRS score ≥ 4 (Pain was assessed using NRS scale of 0-10, with 0 being no pain and 10 being most painful)
From ending of the surgery to 24 hours postoperatively

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Patient controlled analgesia pump analgesic consumption
Time Frame: From the time when the surgery was completed until to 24 hours after surgery
Analgesic requirements was assessed by recording the volume of patient controlled analgesia pump
From the time when the surgery was completed until to 24 hours after surgery
Patient controlled analgesia pump analgesic consumption
Time Frame: From the time when the surgery was completed until to 48 hours after surgery
Analgesic requirements was assessed by recording the volume of patient controlled analgesia pump
From the time when the surgery was completed until to 48 hours after surgery
The incidence of additional analgesic requirements
Time Frame: From the time when the surgery was completed until to 48 hours after surgery
the percentage of patients who received additional analgesic out of the total number of patients in the group
From the time when the surgery was completed until to 48 hours after surgery
Maximum pain score (NRS score) at 0-48 hours postoperatively
Time Frame: From ending of the surgery to 48 hours postoperatively
NRS score: Pain was assessed on a scale of 0-10, with 0 being no pain and 10 being most painful
From ending of the surgery to 48 hours postoperatively
The incidence of moderate to severe postoperative pain
Time Frame: From ending of the surgery to 48 hours postoperatively
Moderate to severe postoperative pain：NRS score ≥ 4 (Pain was assessed using NRS scale of 0-10, with 0 being no pain and 10 being most painful)
From ending of the surgery to 48 hours postoperatively
Accumulative postoperative pain NRS
Time Frame: From ending of the surgery to 48 hours postoperatively
Accumulative NRS score (Pain was assessed using NRS scale of 0-10, with 0 being no pain and 10 being most painful) at 6, 12, 24 and 48 hours after surgery
From ending of the surgery to 48 hours postoperatively

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pain score (NRS score) at 0-6 hours postoperatively
Time Frame: From ending of the surgery to 6 hours postoperatively
NRS score: Pain was assessed on a scale of 0-10, with 0 being no pain and 10 being most painful
From ending of the surgery to 6 hours postoperatively
Pain score (NRS score) at 12-24 hours postoperatively
Time Frame: From 12 hours postoperatively to 24 hours postoperatively
NRS score: Pain was assessed on a scale of 0-10, with 0 being no pain and 10 being most painful
From 12 hours postoperatively to 24 hours postoperatively
Pain score (NRS score) at 6-12 hours postoperatively
Time Frame: From ending of the surgery to 12 hours postoperatively
NRS score: Pain was assessed on a scale of 0-10, with 0 being no pain and 10 being most painful
From ending of the surgery to 12 hours postoperatively
Pain score (NRS score) at 24-48 hours postoperatively
Time Frame: From 24 hours postoperatively to 48 hours postoperatively
NRS score: Pain was assessed on a scale of 0-10, with 0 being no pain and 10 being most painful
From 24 hours postoperatively to 48 hours postoperatively

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
The Second Affiliated Hospital of Chongqing Medical University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
The First Affiliated Hospital of Zhengzhou University
ChongGang General Hospital
Shapingba People's Hospital of Chongqing University
The 3rd. Affiliated Hospital of Chongqing Medical University
Chongqing Hechuan District People's Hospital
Chongqing Qijiang District People's Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: Guangyou Duan, Doctor, Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 12, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 10, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 30, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 12, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 12, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 18, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 11, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 9, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • noise and postoperative pain

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The individual participant data for this study is available from the sponsor on reasonable request through email

IPD Sharing Time Frame

Five years after the study

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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