Pain relief without opioids: new anesthesia approach tested in breast cancer surgery
NCT ID NCT06404983
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether avoiding opioids during breast cancer surgery can reduce pain and side effects afterward. About 200 adults having a lumpectomy or mastectomy will be randomly assigned to receive either opioid-free or standard anesthesia. Researchers will measure pain levels, opioid use, and recovery for up to 6 months after surgery.
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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 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2022
- Expected to finish
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Sep 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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18 to 99 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: * adult patients * breast cancer surgery (mastectomy, lumpectomy, with or without lymph node excision) under general anaesthesia Exclusion Criteria: * under 18 years * patient refusal * opioid use (systemic or not) for any reason (e.g., chronic malignant pain) * language barrier (difficulty in communicating in Greek language) * allergy to the administered agents * severe arrhythmia or other serious cardiac disease * severe liver and kidney failure * dementia, psychiatric diseases, and/or preoperative cognitive impairment
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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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University Hospital of Ioannina
RECRUITINGIoannina, Epirus, 455 00, Greece
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Other studies related to the condition(s) this trial covers.
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