Laparoscopic Sleeve GastrectomyNCT07816055
Efficacy of Ultrasound-guided External Oblique Intercostal Plane Block Versus Port-site Local Anesthetic Infiltration for Postoperative Analgesia and Pulmonary Function After Laparoscopic Sleeve Gastrectomy
A study testing Port-Site Local Anesthetic Infiltration and External Oblique Intercostal Block in people with Laparoscopic Sleeve Gastrectomy, run by Assiut University.
Trial summary
Obesity poses severe global health risks and induces complex cardiorespiratory alterations, making perioperative care critical. For patients with morbid obesity, Laparoscopic Sleeve Gastrectomy (LSG) is the most effective long-term treatment. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Laparoscopic Sleeve Gastrectomy
- What is being tested?
- Port-Site Local Anesthetic Infiltration and External Oblique Intercostal Block
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 54 participants
- Where
- No sites listed yet
- Study dates
- Oct 2026to Dec 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- • Age 18-65 years
- BMI between 35 kg/m2 and 40 kg/m²
- ASA (I-II-III)
- Elective laparoscopic sleeve gastrectomy
- Ability to provide informed consent
Who cannot join
- • Patient refusal
- Allergy to local anesthetics
- Coagulopathy
- Infection at injection site
- Chronic opioid use
- Hepatic failure
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- Renal failure
- Conversion to open surgery
- OSAS-home CPAP
- Cardiac patients
- Super morbid >50 kg / m²
About this study
Obesity poses severe global health risks and induces complex cardiorespiratory alterations, making perioperative care critical. For patients with morbid obesity, Laparoscopic Sleeve Gastrectomy (LSG) is the most effective long-term treatment. However, despite being minimally invasive, LSG causes significant early postoperative pain from trocar insertion, pneumo-peritoneum, and visceral trauma. Uncontrolled pain can lead to impaired respiratory function, delayed recovery, and increased opioid-related side effects. Enhanced Recovery After Surgery (ERAS) protocols emphasize opioid-sparing multimodal analgesia. While local port-site infiltration is inexpensive and simple, its effects are localized and short-lived, often requiring supplemental opioids. In contrast, the ultrasound-guided External Oblique Intercostal (EOI) block targets the fascial plane between the external oblique and intercostal muscles (T6-T10). It provides superficial, easily identifiable landmarks in obese patients and delivers widespread sensory blockade across the upper anterior abdominal wall. To evaluate superior pain management strategies, a prospective, randomized, controlled study compares the analgesic efficacy of ultrasound-guided bilateral EOI block versus conventional port-site local anesthetic infiltration in patients undergoing elective LSG. Key Study Metrics (First 24 Postoperative Hours) Primary Outcomes: Total postoperative opioid consumption and pain scores. Secondary Outcomes: Time to first rescue analgesia, incidence of postoperative nausea and vomiting (PONV), overall patient satisfaction, and recovery metrics. Ultimately, demonstrating the superior efficacy of the EOI block over port-site infiltration may refine perioperative analgesic protocols, reduce opioid dependence, and improve recovery outcomes in bariatric surgery.
- Conditions
- Laparoscopic Sleeve Gastrectomy
- Being tested
- Port-Site Local Anesthetic Infiltration, External Oblique Intercostal Block
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Port-Site Local Anesthetic InfiltrationProcedure or surgery
patients undergoing laparoscopic sleeve gastrectomy receiving port-site infiltration with 5 ml 0.25% bupivacaine at each port site.
External Oblique Intercostal BlockProcedure or surgery
ultrasound-guided external oblique intercostal block with 30 ml 0.25% bupivacaine bilaterally.
| Study group | Role | What they receive |
|---|---|---|
| Group I | Active comparator | External Oblique Intercostal Block, EOI Receives: Procedure: External Oblique Intercostal Block |
| Group II | Active comparator | Port-Site Local Anesthetic Infiltration Receives: Procedure: Port-Site Local Anesthetic Infiltration |
What is being measured
The primary outcome is the main question the study is designed to answer.
Total opioid consumption
Total opioid consumption (IV NALUFIN) during the first 24 postoperative hours
Measured: 24 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Sep 2026
- Study startOct 2026 (estimated)
- Primary completionOct 2027 (estimated)
- Study completionDec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Laparoscopic Sleeve GastrectomyStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 54 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hazem Samir Mohamed Ahmed, Assiut University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07816055
- Sponsor's protocol ID
- EOIPB VS Local Analgesia LSG
- Status last verified
- Sep 2026
- First submitted
- 7 Sep 2026
- Last updated
- 11 Sep 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 11 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Efficacy of Ultrasound-guided External Oblique Intercostal Plane Block Versus Port-site Local Anesthetic Infiltration for Postoperative Analgesia and Pulmonary Function After Laparoscopic Sleeve Gastrectomy
- ClinicalTrials.gov ID
- NCT07816055
- Acronym / sponsor ID
- EOIPB VS Local Analgesia LSG
- Conditions
- Laparoscopic Sleeve Gastrectomy
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 54 participants (estimated)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Study start
- Oct 2026 (estimated)
- Primary completion
- Oct 2027 (estimated)
- Study completion
- Dec 2027 (estimated)
- First posted
- 11 Sep 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Obesity poses severe global health risks and induces complex cardiorespiratory alterations, making perioperative care critical. For patients with morbid obesity, Laparoscopic Sleeve Gastrectomy (LSG) is the most effective long-term treatment. However, despite being minimally invasive, LSG causes significant early postoperative pain from trocar insertion, pneumo-peritoneum, and visceral trauma. Uncontrolled pain can lead to impaired respiratory function, delayed recovery, and increased opioid-related side effects. Enhanced Recovery After Surgery (ERAS) protocols emphasize opioid-sparing multimodal analgesia. While local port-site infiltration is inexpensive and simple, its effects are localized and short-lived, often requiring supplemental opioids. In contrast, the ultrasound-guided External Oblique Intercostal (EOI) block targets the fascial plane between the external oblique and intercostal muscles (T6-T10). It provides superficial, easily identifiable landmarks in obese patients and delivers widespread sensory blockade across the upper anterior abdominal wall. To evaluate superior pain management strategies, a prospective, randomized, controlled study compares the analgesic efficacy of ultrasound-guided bilateral EOI block versus conventional port-site local anesthetic infiltration in patients undergoing elective LSG. Key Study Metrics (First 24 Postoperative Hours) Primary Outcomes: Total postoperative opioid consumption and pain scores. Secondary Outcomes: Time to first rescue analgesia, incidence of postoperative nausea and vomiting (PONV), overall patient satisfaction, and recovery metrics. Ultimately, demonstrating the superior efficacy of the EOI block over port-site infiltration may refine perioperative analgesic protocols, reduce opioid dependence, and improve recovery outcomes in bariatric surgery.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Group I | Active comparator | Procedure: External Oblique Intercostal BlockExternal Oblique Intercostal Block, EOI |
| Group II | Active comparator | Procedure: Port-Site Local Anesthetic InfiltrationPort-Site Local Anesthetic Infiltration |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- • Age 18-65 years
Key exclusion criteria (11 listed)
- • Patient refusal
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Port-Site Local Anesthetic Infiltrationpatients undergoing laparoscopic sleeve gastrectomy receiving port-site infiltration with 5 ml 0.25% bupivacaine at each port site. | Procedure or surgery | Group II |
| External Oblique Intercostal Blockultrasound-guided external oblique intercostal block with 30 ml 0.25% bupivacaine bilaterally. | Procedure or surgery | Group I |
Primary outcome
Total opioid consumption
Time frame: 24 hours
Total opioid consumption (IV NALUFIN) during the first 24 postoperative hours
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 Sep 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing Port-Site Local Anesthetic Infiltration and External Oblique Intercostal Block in people with Laparoscopic Sleeve Gastrectomy, run by Assiut University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 11 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Total opioid consumption (time frame: 24 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Sep 2026.