Can Opioid-Free anesthesia stop chronic pain after breast cancer surgery?
NCT ID NCT05146778
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether using opioid-free anesthesia during mastectomy can reduce chronic pain one year after surgery. 230 breast cancer patients will be randomly assigned to receive either opioid-free or standard opioid-based anesthesia. Researchers will also look at how psychological factors affect pain outcomes.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Opioid-free anesthesia (dexmedetomidine and lidocaine)
- What this could lead to
- If it works, this could offer a way to reduce long-term pain after mastectomy without using opioids.
- What could go wrong
- This is a small, early-stage trial. The approach may not reduce pain better than standard care, and individual responses may vary.
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
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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
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About 230 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2021
- Expected to finish
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Oct 2027
An estimate. End dates often move.
- Lead sponsor
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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
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19 to 80 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Gangnam Severance Hospital
RECRUITINGSeoul, 135270, South Korea
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