Reducing post-mastectomy pain with opioid-free anesthesia

A Single-blinded Randomized-controlled Study to Reduce Persistent Post-mastectomy Pain Using Multimodal Opioid-free Anesthesia

Not applicable Interventional Gangnam Severance Hospital · NCT05146778

This study is testing whether using anesthesia without opioids can help women who have had a mastectomy experience less chronic pain a year after their surgery compared to traditional opioid-based anesthesia.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment230 (estimated)
Ages19 Years to 80 Years
SexFemale
SponsorGangnam Severance Hospital Academic / other
Locations1 site (Seoul)
Trial IDNCT05146778 on ClinicalTrials.gov

What this trial studies

This study involves 230 patients undergoing mastectomy, where participants will be randomly assigned to receive either opioid-free anesthesia or conventional opioid-based anesthesia. The aim is to compare the effectiveness of these two approaches in reducing chronic pain one year after surgery. Pain assessments will be conducted using various questionnaires and tests to evaluate pain sensitivity and psychological factors before and after the procedure.

Who should consider this trial

Good fit: Ideal candidates are patients scheduled for mastectomy with or without immediate breast reconstruction.

Not a fit: Patients with a history of breast surgery, chronic pain requiring painkillers, or underlying psychological disorders may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the incidence of chronic pain following mastectomy without the use of opioids.

How similar studies have performed: Other studies have shown promising results with opioid-free anesthesia in various surgical settings, indicating potential for success in this novel application.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All of patients will undergo mastectomy with or without immediate breast reconstruction.

Exclusion Criteria:

* Previous history of breast surgery
* Allergy to drug
* Other cancer history
* Underlying psychologic disorder
* Patients with chronic pain requiring pain killers
* Baseline SpO2 \<95%
* Left ventricular EF \<40%
* Bradycardia as HR \<50 bpm
* BMI \>35kg/m2
* Pregnant woman

Where this trial is running

Seoul

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Breast CancerMastectomyPain, ChronicPain, Post Operative
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.