Less may be more: smaller dose of pain drug could be safer after gallbladder surgery
NCT ID NCT07507799
First seen Jun 27, 2026 · Last updated Sep 03, 2026 · Updated 2 times
Summary
This study compares a low volume of the painkiller bupivacaine to the standard volume for a nerve block after gallbladder surgery. The goal is to see if the lower dose controls pain just as well while reducing the risk of side effects. About 96 adults having planned gallbladder surgery will take part.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- bupivacaine
- What this could lead to
- If it works, this could lead to safer pain control after gallbladder surgery with less risk of side effects from the anesthetic.
- What could go wrong
- This is a small, early-stage trial with only 96 participants, so results may not apply to everyone. The lower volume might not control pain as well as the standard dose.
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 96 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Jan 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 65 years
- Sex
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Anyone
- 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: * American Society of Anesthesiologists (ASA) physical status I or II. * Scheduled for elective laparoscopic cholecystectomy under general anesthesia. Exclusion Criteria: * • Patient refusal to participate. * Obese patients with a body mass index of more than 35 kg/m2. * Known cognitive impairment or use of psychiatric drugs * Known allergy to local anesthetics * Infection at the needle insertion site. * Coagulopathy, or bleeding disorders. * Pregnancy * History of chronic pain or chronic opioid use. * Previous major upper abdominal surgery (which alters the fascial planes and anatomy). Criteria for Withdrawal from Study Analysis (Drop-outs): * Conversion to open cholecystectomy during surgery. * Failed EXORA block
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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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Fayoum University hospital
RECRUITINGEl Fayoum Qesm, Faiyum Governorate, 63514, Egypt
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