Effect of Intraoperative Instrumental Music and Operating Room Noise Reduction on Anesthetic and Analgesic Requirements in Pediatric Patients Aged 3-18 Years Undergoing Surgery Under General Anesthesia: A Randomized Controlled Trial (MUSIC-OR)

June 2, 2026 updated by: Ankara City Hospital Bilkent

EFFECT OF INTRAOPERATİVE INSTRUMENTAL MUSİC AND OPERATİNG ROOM NOİSE REDUCTİON ON ANESTHETİC AND ANALGESİC REQUİREMENTS İN PEDİATRİC PATİENTS AGED 3-18 YEARS UNDERGOİNG SURGERY UNDER GENERAL ANESTHESİA: A RANDOMİZED CONTROLLED TRİAL

This randomized controlled clinical trial aims to evaluate the effects of intraoperative instrumental music and operating room noise reduction on anesthetic and analgesic requirements in pediatric patients aged 3-18 years undergoing elective surgery under general anesthesia.

A total of 180 patients will be randomly assigned to one of three groups: an instrumental music group, a noise reduction group, or a routine care control group. In the music group, patients will be exposed to instrumental music through headphones during surgery. In the noise reduction group, operating room noise levels will be minimized using a standardized acoustic management protocol. The control group will receive standard anesthetic care without any acoustic intervention.

All patients will undergo standardized general anesthesia. The primary outcomes will be intraoperative volatile anesthetic consumption (sevoflurane use and MAC values) and opioid requirements. Secondary outcomes will include hemodynamic parameters, postoperative pain scores, emergence delirium, and post-anesthesia care unit (PACU) length of stay.

The study does not involve any experimental drugs, invasive procedures, or additional risks beyond routine clinical care. The findings may help determine whether simple non-pharmacological acoustic interventions can reduce anesthetic and analgesic requirements and improve perioperative outcomes in pediatric patients.

Study Overview

Detailed Description

This study is a prospective, single-center, three-arm randomized controlled trial including pediatric patients aged 3-18 years who are scheduled for elective surgery under general anesthesia.

Participants will be randomly assigned to one of three groups: intraoperative instrumental music, operating room noise reduction, or routine care. In the music group, instrumental music will be delivered through headphones during surgery. In the noise reduction group, operating room noise will be minimized using a standardized acoustic management approach. The routine care group will receive standard anesthesia care without an additional acoustic intervention.

General anesthesia will be managed according to a standardized protocol. Anesthetic depth, hemodynamic variables, anesthetic consumption, opioid use, postoperative pain, emergence delirium, and recovery room stay will be recorded and compared between groups.

The study is designed to investigate whether simple non-pharmacological acoustic interventions during surgery can reduce anesthetic and analgesic requirements and improve early postoperative recovery in children.

Study Type

Observational

Enrollment (Estimated)

180

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

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

The study population will consist of pediatric patients aged 3 to 18 years who are scheduled to undergo elective surgical procedures under general anesthesia at a tertiary care university-affiliated hospital. Eligible participants will have ASA physical status I or II and will be recruited during the preoperative evaluation period. Patients undergoing emergency surgery or presenting with conditions that may interfere with the study interventions or outcome assessments will be excluded.

Description

Inclusion Criteria:Children aged 3 to 18 years Scheduled for elective surgery under general anesthesia American Society of Anesthesiologists (ASA) physical status I or II Expected surgical duration between 30 minutes and 4 hours Eligibility for standardized general anesthesia management No contraindication to the use of headphones or acoustic interventions Written informed consent obtained from a parent or legal guardian Assent obtained from children when appropriate according to age and cognitive capacity -

Exclusion Criteria: Emergency surgery ASA physical status III or higher Significant neurological disorders or developmental delay Severe cognitive impairment preventing appropriate assessment Epilepsy or disorders associated with increased sensitivity to auditory stimulation Moderate to severe hearing impairment or active ear disease Chronic use of opioids, sedatives, or psychoactive medications Severe cardiac, hepatic, or renal dysfunction Refusal of participation by the parent, legal guardian, or patient

-

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

Cohorts and Interventions

Group / Cohort
Instrumental Music Group
Participants randomized to this group will receive instrumental music through headphones during surgery under general anesthesia. Music playback will begin after induction of anesthesia and continue throughout the surgical procedure. Standard anesthesia management will be maintained for all participants.
Noise Reduction Group
Participants randomized to this group will undergo surgery under general anesthesia in an operating room where environmental noise is minimized using a standardized noise reduction protocol. Standard anesthesia management will be maintained for all participants.
Routine Care Control Group
Participants randomized to this group will receive standard perioperative care and general anesthesia without any additional acoustic intervention, music exposure, or noise reduction measures.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Intraoperative Sevoflurane Consumption
Time Frame: From induction of anesthesia until completion of surgery (up to 4 hours)
Total intraoperative sevoflurane consumption will be measured using average MAC values and total volatile anesthetic consumption recorded by the anesthesia machine during the surgical procedure.
From induction of anesthesia until completion of surgery (up to 4 hours)
Intraoperative Anesthetic and Opioid Consumption
Time Frame: From induction of anesthesia until completion of surgery (up to 4 hours)
Total intraoperative sevoflurane consumption and opioid requirement will be recorded throughout the surgical procedure. Sevoflurane consumption will be assessed using average MAC values and total volatile anesthetic use recorded by the anesthesia machine. Opioid requirement will be assessed as the total intraoperative opioid dose administered per kilogram of body weight. Outcomes will be compared among the instrumental music, noise reduction, and routine care groups.
From induction of anesthesia until completion of surgery (up to 4 hours)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Intraoperative Sevoflurane Consumption
Time Frame: From induction of anesthesia until completion of surgery (up to 4 hours)
Total intraoperative sevoflurane consumption will be measured using average minimum alveolar concentration (MAC) values and total volatile anesthetic consumption recorded by the anesthesia machine throughout the surgical procedure.
From induction of anesthesia until completion of surgery (up to 4 hours)

Collaborators and Investigators

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

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 (Estimated)

June 1, 2026

Primary Completion (Estimated)

November 1, 2026

Study Completion (Estimated)

June 1, 2027

Study Registration Dates

First Submitted

June 2, 2026

First Submitted That Met QC Criteria

June 2, 2026

First Posted (Actual)

June 5, 2026

Study Record Updates

Last Update Posted (Actual)

June 5, 2026

Last Update Submitted That Met QC Criteria

June 2, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • E. Kurul-E2-26-14703
  • TABED 1-26-2457 (Other Identifier: ANKARA BİLKENT CİTY HOSPİTAL)

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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