CholelithiasesNCT07582029
Ultrasound-Guided Rectus Sheath Block Versus Local Infiltration
A study testing Rectus Sheath Block and Local Anesthetic Infiltration in people with Cholelithiases and Cholecystitis, run by Sisli Hamidiye Etfal Training and Research Hospital at 1 site in Turkey (Türkiye).
Trial summary
Laparoscopic cholecystectomy is associated with significant postoperative pain originating from trocar sites, pneumoperitoneum, and visceral irritation. Both local anesthetic infiltration and ultrasound-guided rectus sheath block are commonly used regional analgesic techniques to reduce postoperative pain and opioid… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Cholelithiases, Cholecystitis, Postoperative Pain
- What is being tested?
- Rectus Sheath Block and Local Anesthetic Infiltration
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 12 May 2026to 12 Dec 2026
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- ASA (American Society of Anesthesiologists) class I-II patients
- Patients aged between 18 and 65 years
- Patients undergoing laparoscopic cholecystectomy surgery
Who cannot join
- ASA class III-IV patients
- Patients undergoing emergency surgery
- Relatives of patients who do not provide consent
- Presence of chronic pain
- Chronic opioid use
- Presence of local anesthetic allergy
Show all 15Show fewer
- Ibuprofen allergy
- Paracetamol allergy
- Presence of infection at the block site
- Coagulopathy
- Increased intracranial pressure
- Pre-existing neurological deficit
- Severe organ failure
- Mental retardation
- Anatomical deformity
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Sisli Hamidiye Etfal Training Hospital
Istanbul, 34371
MUSTAFA ALTINAY, 05333914422, m_altinay@yahoo.com
About this study
Official title: Comparison of the Analgesic Effects of Local Anesthetic Infiltration and Ultrasound-Guided Rectus Sheath Block in Laparoscopic Cholecystectomy Operations: A Prospective Randomized Controlled Study
Laparoscopic cholecystectomy is associated with significant postoperative pain originating from trocar sites, pneumoperitoneum, and visceral irritation. Both local anesthetic infiltration and ultrasound-guided rectus sheath block are commonly used regional analgesic techniques to reduce postoperative pain and opioid consumption. This prospective randomized controlled study aims to compare the effects of these two techniques on postoperative pain scores, opioid requirements, and analgesia-related adverse effects following laparoscopic cholecystectomy.
Read the detailed description
Laparoscopic cholecystectomy is a very commonly performed and painful surgical procedure. The etiology of pain is complex and commonly includes pain related to trocar insertion sites, pain secondary to carbon dioxide insufflation, visceral pain, and shoulder pain. Various analgesic medications and regional anesthesia techniques are used for postoperative pain management. Abdominal wall blocks are frequently utilized to reduce opioid-related adverse effects.
Rectus sheath block is a regional anesthesia technique that blocks the anterior cutaneous branches of the lower thoracic nerves (T7-T12) and is used for analgesia in laparoscopic surgeries. Several studies have demonstrated that local anesthetic infiltration provides effective analgesia in laparoscopic cholecystectomy. Although rectus sheath block is an old technique traditionally used in midline surgeries, its analgesic use in laparoscopic procedures has increased in recent years.
In this prospective randomized clinical trial, we aimed to compare the effects of Local Anesthetic Infiltration and Rectus Sheath Block on opioid consumption and pain scores in laparoscopic gallbladder surgery.
To compare the effects of Local Anesthetic Infiltration and Rectus Sheath Block on opioid consumption and pain scores in laparoscopic gallbladder surgery.
- Conditions
- Cholelithiases, Cholecystitis, Postoperative Pain
- Being tested
- Rectus Sheath Block, Local Anesthetic Infiltration
- Keywords
- Cholecystectomy, Laparoscopic, Rectus Sheath Block, Anesthesia, Local, Pain, Postoperative
- Medical subject headings
- Cholelithiasis, Cholecystitis, Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Rectus Sheath BlockProcedure or surgery
After completion of the operation, during the surgical closure phase, bilateral rectus sheath block will be performed. A linear ultrasound probe will be placed transversely over the umbilicus and 1 cm lateral to it. After visualization of the rectus abdominis muscle and posterior rectus sheath, a 22-Gauge 80 mm block needle (Braun Stimuplex Ultra-360, Melsungen, Germany) will be advanced from lateral to medial using the in-plane technique. Following hydrodissection with 1 mL saline between the rectus muscle and posterior sheath and confirmation of appropriate spread, 20 mL local anesthetic (0.25% bupivacaine) will be administered with intermittent negative aspiration.
Local Anesthetic InfiltrationProcedure or surgery
At the end of the operation, the surgeon will infiltrate 5 mL local anesthetic (0.5% bupivacaine) subcutaneously into each of the four trocar insertion sites.
| Study group | Role | What they receive |
|---|---|---|
| GROUP RSB | Active comparator | Rectus Sheath Block:
After completion of the operation, during the surgical closure phase, bilateral rectus sheath block will be performed. A linear ultrasound probe will be placed transversely over the umbilicus and 1 cm lateral to it. After visualization of the rectus abdominis muscle and posterior rectus sheath, a 22-Gauge 80 mm block needle (Braun Stimuplex Ultra-360, Melsungen, Germany) will be advanced from lateral to medial using the in-plane technique. Following hydrodissection with 1 mL saline between the rectus muscle and posterior sheath and confirmation of appropriate spread, 20 mL local anesthetic (0.25% bupivacaine) will be administered with intermittent negative aspiration. Receives: Procedure: Rectus Sheath Block |
| GROUP LAI | Active comparator | Local Anesthetic Infiltration:
At the end of the operation, the surgeon will infiltrate 5 mL local anesthetic (0.5% bupivacaine) subcutaneously into each of the four trocar insertion sites. Receives: Procedure: Local Anesthetic Infiltration |
What is being measured
The primary outcome is the main question the study is designed to answer.
NRS Score
Postoperative pain assessment will be performed using the Numeric Rating Scale (NRS). The NRS is a scale in which patients rate their pain intensity numerically from 0 (no pain) to 10 (worst imaginable pain).
Measured: Pain scores will be assessed and recorded at postoperative 0, 1, 4, 12, and 24 hours.
Secondary outcomes (2)
Opioid Consumption
Postoperative opioid consumption will be evaluated using intravenous patient-controlled analgesia (IV PCA) over 24 hours. PCA will be set in bolus-only mode (10 mg tramadol), without continuous infusion. Patients will be educated preoperatively regarding PCA use and instructed to administer boluses in case of pain. At the end of 24 hours, total opioid consumption will be recorded from the device data, and the time to first bolus administration (time to first analgesic requirement) will also be evaluated.
Measured: 24 hour
Adverse Effects
Adverse effects such as hypotension, bradycardia, nausea, vomiting, and local anesthetic systemic toxicity (LAST) occurring within the first 24 postoperative hours will be monitored and recorded.
Measured: 24 hour
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 May 2026
- Study start12 May 2026
- Primary completion12 Nov 2026 (estimated)
- Study completion12 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for CholelithiasesStudies 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
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sisli Hamidiye Etfal Training and Research Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Leyla Kılınc, Sisli Hamidiye Etfal Training and Research Hospital
- Investigators
- LEYLA KILINC, Principal investigator, şişli etfal eğitim araştırma hastanesi
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07582029
- Sponsor's protocol ID
- zeynep-1
- Status last verified
- Oct 2026
- First submitted
- 6 May 2026
- Last updated
- 16 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of the Analgesic Effects of Local Anesthetic Infiltration and Ultrasound-Guided Rectus Sheath Block in Laparoscopic Cholecystectomy Operations: A Prospective Randomized Controlled Study
- ClinicalTrials.gov ID
- NCT07582029
- Acronym / sponsor ID
- zeynep-1
- Conditions
- Cholelithiases, Cholecystitis, Postoperative Pain
- Keywords
- Cholecystectomy, Laparoscopic, Rectus Sheath Block, Anesthesia, Local, Pain, Postoperative
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Sisli Hamidiye Etfal Training and Research HospitalUniversity, hospital or other
- Study start
- 12 May 2026 (actual)
- Primary completion
- 12 Nov 2026 (estimated)
- Study completion
- 12 Dec 2026 (estimated)
- First posted
- 12 May 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.
Laparoscopic cholecystectomy is associated with significant postoperative pain originating from trocar sites, pneumoperitoneum, and visceral irritation. Both local anesthetic infiltration and ultrasound-guided rectus sheath block are commonly used regional analgesic techniques to reduce postoperative pain and opioid consumption. This prospective randomized controlled study aims to compare the effects of these two techniques on postoperative pain scores, opioid requirements, and analgesia-related adverse effects following laparoscopic cholecystectomy.
Detailed description
Laparoscopic cholecystectomy is a very commonly performed and painful surgical procedure. The etiology of pain is complex and commonly includes pain related to trocar insertion sites, pain secondary to carbon dioxide insufflation, visceral pain, and shoulder pain. Various analgesic medications and regional anesthesia techniques are used for postoperative pain management. Abdominal wall blocks are frequently utilized to reduce opioid-related adverse effects.
Rectus sheath block is a regional anesthesia technique that blocks the anterior cutaneous branches of the lower thoracic nerves (T7-T12) and is used for analgesia in laparoscopic surgeries. Several studies have demonstrated that local anesthetic infiltration provides effective analgesia in laparoscopic cholecystectomy. Although rectus sheath block is an old technique traditionally used in midline surgeries, its analgesic use in laparoscopic procedures has increased in recent years.
In this prospective randomized clinical trial, we aimed to compare the effects of Local Anesthetic Infiltration and Rectus Sheath Block on opioid consumption and pain scores in laparoscopic gallbladder surgery.
To compare the effects of Local Anesthetic Infiltration and Rectus Sheath Block on opioid consumption and pain scores in laparoscopic gallbladder surgery.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| GROUP RSB | Active comparator | Procedure: Rectus Sheath BlockRectus Sheath Block: After completion of the operation, during the surgical closure phase, bilateral rectus sheath block will be performed. A linear ultrasound probe will be placed transversely over the umbilicus and 1 cm lateral to it. After visualization of the rectus abdominis muscle and posterior rectus sheath, a 22-Gauge 80 mm block needle (Braun Stimuplex Ultra-360, Melsungen, Germany) will be advanced from lateral to medial using the in-plane technique. Following hydrodissection with 1 mL saline between the rectus muscle and posterior sheath and confirmation of appropriate spread, 20 mL local anesthetic (0.25% bupivacaine) will be administered with intermittent negative aspiration. |
| GROUP LAI | Active comparator | Procedure: Local Anesthetic InfiltrationLocal Anesthetic Infiltration: At the end of the operation, the surgeon will infiltrate 5 mL local anesthetic (0.5% bupivacaine) subcutaneously into each of the four trocar insertion sites. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- ASA (American Society of Anesthesiologists) class I-II patients
- Patients aged between 18 and 65 years
- Patients undergoing laparoscopic cholecystectomy surgery
Key exclusion criteria (15 listed)
- ASA class III-IV patients
- Patients undergoing emergency surgery
- Relatives of patients who do not provide consent
- Presence of chronic pain
- Chronic opioid use
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 |
|---|---|---|
| Rectus Sheath BlockAfter completion of the operation, during the surgical closure phase, bilateral rectus sheath block will be performed. A linear ultrasound probe will be placed transversely over the umbilicus and 1 cm lateral to it. After visualization of the rectus abdominis muscle and posterior rectus sheath, a 22-Gauge 80 mm block needle (Braun Stimuplex Ultra-360, Melsungen, Germany) will be advanced from lateral to medial using the in-plane technique. Following hydrodissection with 1 mL saline between the rectus muscle and posterior sheath and confirmation of appropriate spread, 20 mL local anesthetic (0.25% bupivacaine) will be administered with intermittent negative aspiration. | Procedure or surgery | GROUP RSB |
| Local Anesthetic InfiltrationAt the end of the operation, the surgeon will infiltrate 5 mL local anesthetic (0.5% bupivacaine) subcutaneously into each of the four trocar insertion sites. | Procedure or surgery | GROUP LAI |
Primary outcome
NRS Score
Time frame: Pain scores will be assessed and recorded at postoperative 0, 1, 4, 12, and 24 hours.
Postoperative pain assessment will be performed using the Numeric Rating Scale (NRS). The NRS is a scale in which patients rate their pain intensity numerically from 0 (no pain) to 10 (worst imaginable pain).
2 secondary outcomes
Opioid Consumption
Time frame: 24 hour
Adverse Effects
Time frame: 24 hour
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 16 Oct 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.
LEYLA KILINC principal investigator
şişli etfal eğitim araştırma hastanesi
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Rectus Sheath Block and Local Anesthetic Infiltration in people with Cholelithiases and Cholecystitis, run by Sisli Hamidiye Etfal Training 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 3 inclusion and 15 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: looking for participants now, as of the sponsor's last update on 16 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?
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?
Contact LEYLA KILINC (+90 532 417 02 44, leylaturkoglu@hotmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
NRS Score (time frame: Pain scores will be assessed and recorded at postoperative 0, 1, 4, 12, and 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 16 Oct 2026.