Nerve block slashes opioid need after breast cancer surgery
NCT ID NCT04343807
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether an ultrasound-guided PECS nerve block could reduce opioid use and improve pain control in 70 women undergoing breast cancer surgery. Participants received either the nerve block or standard care. The goal was to see if the block leads to less pain, less need for strong painkillers, and higher patient satisfaction 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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70 people
The number who actually took part.
- Started
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Nov 2023
- Finished
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Mar 2025
- 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 65 years
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Patients undergoing elective modified radical mastectomy (MRM) * All adults aged between 18 and 65 years * ASA (American Society of Anesthesiologists ) I \& II Exclusion Criteria: * Patient refusal * Hypersensitivity to local anaesthetics * Coagulopathy or bleeding diathesis * Local infection at the site of block * BMI more than 35 kg/m2 * Chest wall deformity or previous breast surgery * MRM with latissimus dorsi or deep inferior epigastric perforator flap reconstruction
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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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Aga Khan University Hospital
Karachi, Sindh, Pakistan
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Other studies related to the condition(s) this trial covers.
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