Sleeve GastrectomyNCT07547280
Comparison of the Effects of External Oblique Intercostal Plane Block and Subcostal Transversus Plane Block Methods With Ultrasound Guidance on Postoperative Analgesia in Laparoscopic Sleeve Gastrectomy Operations
A study testing Ultrasound-guided external oblique intercostal plane block, Local anesthetic infiltration and Subcostal Transversus Abdominis Plane Block (s-TAP) in people with Sleeve Gastrectomy and External Oblique Intercostal Plane Block, run by Sanliurfa Education and Research Hospital at 1 site in Turkey (Türkiye).
Trial summary
The primary aim of this study was to investigate the effects of the external oblique intercostal plane block and the subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption in patients undergoing laparoscopic sleeve gastrectomy. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Sleeve Gastrectomy, External Oblique Intercostal Plane Block, Subcostal Transverse Abdominis Plane Block
- What is being tested?
- Ultrasound-guided external oblique intercostal plane block, Local anesthetic infiltration and Subcostal Transversus Abdominis Plane Block (s-TAP)
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jan 2026to 14 Oct 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
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
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Adult patients aged between 18 and 65 years
- Patients classified as American Society of Anesthesiologists (ASA) physical status I-III
Who cannot join
- Patients younger than 18 years or older than 65 years
- Inability to cooperate or comply with study procedures
- Liver and kidney failure
- American Society of Anesthesiologists (ASA) IV-V patient
- External oblique intercostal block(EOİB) and the Subcostal Transversus Abdominis Plane block(s-TAB) are contraindicated
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Sanliurfa Education and Research Hospital
Sanliurfa, Şanlıurfa, 63200
About this study
The primary aim of this study was to investigate the effects of the external oblique intercostal plane block and the subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption in patients undergoing laparoscopic sleeve gastrectomy.
Read the detailed description
Obesity is a global health problem currently treated with diet, pharmacotherapy, and bariatric surgery. Laparoscopic sleeve gastrectomy (LSG) is a common bariatric procedure that often results in moderate to severe postoperative pain. Adequate pain control after LSG is crucial for early mobilization and prevention of complications . As a relatively novel technique, the external oblique intercostal block (EOIB) provides analgesia for anterolateral upper abdominal surgery by blocking both the lateral and anterior cutaneous branches of the intercostal nerves between T6-7 and T10-11 . The subcostal transversus abdominis plane (s-TAP) block provides sensory blockade over nearly the entire anterior abdominal wall between T6 and T9. Therefore, it can be considered as part of multimodal analgesia for both laparotomy and laparoscopic abdominal surgical procedures.
The primary aim of this study was to investigate the effects of the external oblique intercostal block (EOIB) and the subcostal transversus abdominis plane (s-TAP) block on postoperative pain scores and opioid consumption in patients undergoing laparoscopic sleeve gastrectomy.
- Conditions
- Sleeve Gastrectomy, External Oblique Intercostal Plane Block, Subcostal Transverse Abdominis Plane Block
- Being tested
- Ultrasound-guided external oblique intercostal plane block, Local anesthetic infiltration, Subcostal Transversus Abdominis Plane Block (s-TAP)
- Keywords
- Ultrasound guided · External oblique intercostal plane block · Sleeve gastrectomy Bariatric surgery Postoperative · Analgesia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ultrasound-guided external oblique intercostal plane blockProcedure or surgery
Ultrasound-guided external oblique intercostal plane block will be performed at the T6 level using 20 ml of 0.25% bupivacaine at the Immediately after intubation
Local anesthetic infiltrationProcedure or surgery
Port-site local anesthetic infiltration will be performed with bupivacain after intubation by surgeon.
Subcostal Transversus Abdominis Plane Block (s-TAP)Procedure or surgery
Ultrasound-guided OSTAP block will be performed using 20 ml of 0.25% bupivacaine immediately after intubation.
| Study group | Role | What they receive |
|---|---|---|
| External Oblique Intercostal Block | Experimental | patient receive block that External Oblique Intercostal Blcok Receives: Procedure: Ultrasound-guided external oblique intercostal plane block |
| Subcostal Transversus Abdominis Plane Block (s-TAP) | Experimental | Patient receive that OSTAP Receives: Procedure: Subcostal Transversus Abdominis Plane Block (s-TAP) |
| Local anesthetic infiltration | Experimental | Surgeon implement local anesthetic to port site Receives: Procedure: Local anesthetic infiltration |
What is being measured
The primary outcome is the main question the study is designed to answer.
Postoperative Acute Pain Scores
Postoperative acute pain scores assingment with Visual Analog Scores
Measured: postoperative T1: 0. hours, T2:4.hours,T3:12.hours,T4: 24.hours
Secondary outcomes (3)
Total Opioid Consumption
We plan to investigate the effects of the external oblique intercostal block and the subcostal transversus abdominis plane block onopioid consumption in patients undergoing laparoscopic sleeve gastrectomy after surgery.
Measured: POSTOPERATİVE T1:0 HOURS T2:4. HOURS T3:12.HOURS T4:24.HOURS
PATIENT SATISFACTION (Likert Scale) Not satisfied at all 1 Slightly satisfied 2 Moderately satisfied3 Satisfied4 Excellent5 SURGEON SATISFACTION (Likert Scale) Not satisfied at all 1 Slightly satisfied 2 Moderately satisfied3 Satisfied4 Excellent5
Secondary outcomes will include patient- and surgeon-based Likert scale assessments.
Measured: Postoperative 24.hours
Postoperative Nause and Vomiting
Measured: Postoperative first 24.hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Apr 2026
- Study start1 Jan 2026
- Primary completion13 Oct 2026
- Study completion14 Oct 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sleeve GastrectomyStudies of the same condition, open and under way.
- 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
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 90 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sanliurfa Education and Research Hospital
- Sponsor type
- Other government
- Responsible party
- Principal investigator, MELİKE BOSTANCI ERKMEN, Sanliurfa Education and Research Hospital
- Investigators
- Melike Bostancı Erkmen, M.D., Principal investigator, Sanliurfa Education and Research HospitalTolga Karaçay, M.D., Principal investigator, Sanliurfa Education and Research HospitalServet Sürmeli, M.D., Principal investigator, Sanliurfa Education and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07547280
- Sponsor's protocol ID
- SanliurfaERH-ANESTEZİ-MBE-01
- Status last verified
- Oct 2026
- First submitted
- 25 Mar 2026
- Last updated
- 26 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: No Ethics committee approval covers only aggregate data analysis; there is no permission to share individual participant data.
Study at a glance
From the registry record, last updated by the sponsor on 26 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of the Effects of External Oblique Intercostal Plane Block and Subcostal Transversus Plane Block Methods With Ultrasound Guidance on Postoperative Analgesia in Laparoscopic Sleeve Gastrectomy Operations
- ClinicalTrials.gov ID
- NCT07547280
- Acronym / sponsor ID
- SanliurfaERH-ANESTEZİ-MBE-01
- Conditions
- Sleeve Gastrectomy, External Oblique Intercostal Plane Block, Subcostal Transverse Abdominis Plane Block
- Keywords
- Ultrasound guided · External oblique intercostal plane block · Sleeve gastrectomy Bariatric surgery Postoperative · Analgesia
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 90 participants (actual)
- Lead sponsor
- Sanliurfa Education and Research HospitalOther government
- Study start
- 1 Jan 2026 (actual)
- Primary completion
- 13 Oct 2026 (actual)
- Study completion
- 14 Oct 2026 (actual)
- First posted
- 23 Apr 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.
The primary aim of this study was to investigate the effects of the external oblique intercostal plane block and the subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption in patients undergoing laparoscopic sleeve gastrectomy.
Detailed description
Obesity is a global health problem currently treated with diet, pharmacotherapy, and bariatric surgery. Laparoscopic sleeve gastrectomy (LSG) is a common bariatric procedure that often results in moderate to severe postoperative pain. Adequate pain control after LSG is crucial for early mobilization and prevention of complications . As a relatively novel technique, the external oblique intercostal block (EOIB) provides analgesia for anterolateral upper abdominal surgery by blocking both the lateral and anterior cutaneous branches of the intercostal nerves between T6-7 and T10-11 . The subcostal transversus abdominis plane (s-TAP) block provides sensory blockade over nearly the entire anterior abdominal wall between T6 and T9. Therefore, it can be considered as part of multimodal analgesia for both laparotomy and laparoscopic abdominal surgical procedures.
The primary aim of this study was to investigate the effects of the external oblique intercostal block (EOIB) and the subcostal transversus abdominis plane (s-TAP) block on postoperative pain scores and opioid consumption in patients undergoing laparoscopic sleeve gastrectomy.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| External Oblique Intercostal Block | Experimental | Procedure: Ultrasound-guided external oblique intercostal plane blockpatient receive block that External Oblique Intercostal Blcok |
| Subcostal Transversus Abdominis Plane Block (s-TAP) | Experimental | Procedure: Subcostal Transversus Abdominis Plane Block (s-TAP)Patient receive that OSTAP |
| Local anesthetic infiltration | Experimental | Procedure: Local anesthetic infiltrationSurgeon implement local anesthetic to port site |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Adult patients aged between 18 and 65 years
- Patients classified as American Society of Anesthesiologists (ASA) physical status I-III
Key exclusion criteria (5 listed)
- Patients younger than 18 years or older than 65 years
- Inability to cooperate or comply with study procedures
- Liver and kidney failure
- American Society of Anesthesiologists (ASA) IV-V patient
- External oblique intercostal block(EOİB) and the Subcostal Transversus Abdominis Plane block(s-TAB) are contraindicated
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 |
|---|---|---|
| Ultrasound-guided external oblique intercostal plane blockUltrasound-guided external oblique intercostal plane block will be performed at the T6 level using 20 ml of 0.25% bupivacaine at the Immediately after intubation | Procedure or surgery | External Oblique Intercostal Block |
| Local anesthetic infiltrationPort-site local anesthetic infiltration will be performed with bupivacain after intubation by surgeon. | Procedure or surgery | Local anesthetic infiltration |
| Subcostal Transversus Abdominis Plane Block (s-TAP)Ultrasound-guided OSTAP block will be performed using 20 ml of 0.25% bupivacaine immediately after intubation. | Procedure or surgery | Subcostal Transversus Abdominis Plane Block (s-TAP) |
Primary outcome
Postoperative Acute Pain Scores
Time frame: postoperative T1: 0. hours, T2:4.hours,T3:12.hours,T4: 24.hours
Postoperative acute pain scores assingment with Visual Analog Scores
3 secondary outcomes
Total Opioid Consumption
Time frame: POSTOPERATİVE T1:0 HOURS T2:4. HOURS T3:12.HOURS T4:24.HOURS
PATIENT SATISFACTION (Likert Scale) Not satisfied at all 1 Slightly satisfied 2 Moderately satisfied3 Satisfied4 Excellent5 SURGEON SATISFACTION (Likert Scale) Not satisfied at all 1 Slightly satisfied 2 Moderately satisfied3 Satisfied4 Excellent5
Time frame: Postoperative 24.hours
Postoperative Nause and Vomiting
Time frame: Postoperative first 24.hours
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Oct 2026.
- Individual participant dataSharing planned: No. No Ethics committee approval covers only aggregate data analysis; there is no permission to share individual participant data.
Related trials for Sleeve Gastrectomy
RecruitingPhase 4
Optimizing Portal Hypertension With TIPS and Interval Metabolic Surgery for Advanced Liver Disease
Liver Cirrhoses, Portal Hypertension Related to Cirrhosis
Recruiting
HUGO-SLEEVE: Evaluating the Feasibility of Robotic Sleeve Gastrectomy With a New Platform
Obesity (BMI > 35), Obesity (BMI > 35) and Diabetes Mellitus
RecruitingObservational study
15-years Outcomes of Sleeve Gastrectomy on Weight Loss
Bariatric Surgery, Sleeve Gastrectomy
Not yet recruiting
De Novo Gastroesophageal Reflux Disease After Sleeve Gastrectomy With and Without Omentopexy
Omentopexy, Sleeve Gastrectomy
Recruiting
Identification of Pre-surgical Phenotypic Indicators Predictive of Quality of Life Trajectories in Obese Patients Following Bariatric Surgery
Obesity, Morbid, Obesity and Overweight
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. This study is not recruiting at the moment.
Melike Bostancı Erkmen, M.D. principal investigator
Sanliurfa Education and Research Hospital
Tolga Karaçay, M.D. principal investigator
Sanliurfa Education and Research Hospital
Servet Sürmeli, M.D. principal investigator
Sanliurfa Education and Research Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Ultrasound-guided external oblique intercostal plane block, Local anesthetic infiltration and Subcostal Transversus Abdominis Plane Block (s-TAP) in people with Sleeve Gastrectomy and External Oblique Intercostal Plane Block, run by Sanliurfa Education and Research Hospital at 1 site in Turkey (Türkiye).
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 2 inclusion and 5 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: finished, as of the sponsor's last update on 26 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Postoperative Acute Pain Scores (time frame: postoperative T1: 0. hours, T2:4.hours,T3:12.hours,T4: 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 26 Oct 2026.