New study tests which nerve block eases breast surgery pain best
NCT ID NCT07541040
First seen Jun 25, 2026 · Last updated Aug 07, 2026 · Updated 3 times
Summary
This study compares two types of nerve blocks—SPSIPB and ESPB—for pain relief after breast surgery. 54 women will be randomly assigned to receive one block before anesthesia. Researchers will measure pain scores and opioid use in the first 24 hours to see which block works better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- nerve block (SPSIPB or ESPB)
- What this could lead to
- If one block works better, it could mean less pain and less need for strong painkillers after breast surgery.
- What could go wrong
- This is a small, early-stage trial with only 54 people, so results may not apply to everyone. Both blocks are already used, so no big breakthrough is expected.
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 54 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
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 65 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female patients aged 18-65 years * ASA physical status I-III * Body mass index (BMI) between 18 and 35 kg/m² * Scheduled for elective unilateral breast surgery (mastectomy with or without sentinel lymph node biopsy) * Ability to understand and provide written informed consent Exclusion Criteria: * Infection at the site of block application * Known allergy to local anesthetics * Coagulopathy or anticoagulant therapy * Chronic opioid use * Pregnancy * Inability to communicate or cooperate * Refusal to participate * Failed block * Requirement of additional intraoperative analgesia outside the study protocol * Development of serious intraoperative complications
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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 of Health Sciences Kocaeli City Hospital
RECRUITINGİzmit, Kocaeli, 41200, Turkey (Türkiye)
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