New pain block may cut opioid use after breast surgery
NCT ID NCT03599635
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a longer-lasting pain medicine (liposomal bupivacaine) given as a nerve block before breast surgery could reduce the need for opioid painkillers after surgery compared to the standard medicine (bupivacaine). 112 adults having partial mastectomy took part. The goal was to see if the newer medicine provides better pain control and lowers opioid use.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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112 people
The number who actually took part.
- Started
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Jul 2018
- Finished
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Jul 2024
- 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 75 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 patients undergoing partial mastectomy procedures. * Ages 18-75 Exclusion Criteria: * • Patient on chronic anticoagulation * Pregnant women * Non-english speaking patients * Any individuals who are unable to give informed consent * Any individual with diminished capacity to give informed consent * Allergy to local anesthetics * Patients who remain intubated overnight after surgery or who are unable to provide information regarding their pain immediately postoperatively * Daily use of opioid for more than three weeks * Significant liver disease, defined as liver enzymes greater than 3x the upper limit of normal * Lack of patient cooperation including those patients who refuse a MAC anesthetic * Contraindication to regional anesthesia * Infection at injection site * Inability to guarantee sterile equipment or sterile conditions for the block * Patient refusal * Severe Coagulopathy or bleeding disorder
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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.
Contacts and locations
Locations
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M Health Ambulatory Surgery Center
Minneapolis, Minnesota, 55455, United States
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Other studies related to the condition(s) this trial covers.
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