Skip to content

Comparison of OSTAP and EOIP Blocks in Laparoscopic Cholecystectomies

Comparison of Bilateral Oblique Transversus Abdominis Plane Block (OSTAPB) and Bilateral External Oblique Intercostal Plane Block (EOIPB) in Laparoscopic Cholecystectomies

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06172465
Enrollment
80
Registered
2023-12-15
Start date
2024-01-05
Completion date
2024-11-25
Last updated
2024-11-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Analgesia, Pain, Post Operative

Keywords

laparoscopic cholecystectomy, oblique subcostal transversus abdominis plane block, external oblique interfascial plane block

Brief summary

Laparoscopic cholecystectomy (LC) surgery causes postoperative severe pain. As part of multimodal analgesia aimed at reducing postoperative opioid consumption and providing effective analgesia, ultrasound (US)-guided transversus abdominis plane block (TAP) and external oblique intercostal plane block (EOIPB) will be applied as regional anesthesia methods. There is no study in the literature comparing OSTAP and EOIP blocks, and our goal is to evaluate the analgesic effectiveness between OSTAP and EOIP blocks in LC surgeries.

Detailed description

Patients will be divided into two groups, and general anesthesia will be administered to all. Before extubation, one group will receive an external oblique intercostal nerve block, while the other group will receive an oblique subcostal transversus abdominis plane block. The randomization of the study will be carried out by a computer-generated randomization code (computer-generated) by a physician who will not be involved in patient follow-up. The interfascial plane block (either external oblique intercostal block or oblique subcostal block) will be provided to an anesthesiologist in a sealed envelope by an independent assistant staff member outside the study. The patient will not be aware of which block is applied. The anesthesiologist performing the block will not participate in the pain follow-up of the patients. Postoperative pain assessment and data collection will be conducted by another anesthesiologist unaware of the study. For standardization, the block procedure will be performed by an experienced anesthesiologist who has completed at least 20 previous successful and uncomplicated procedures.

Interventions

OTHEREOIP

Ultrasound guided External oblique intercostal block will be performed bilaterally.

OTHEROSTAP

Ultrasound guided oblique subcostal transversus abdominis plane block will be performed bilaterally.

Sponsors

Samsun University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)

Masking description

The anesthetist who will perform the blocks will not participate in the pain follow-up of the patients. Postoperative pain assessment and data collection will be performed by another anesthetist blinded to the study.

Intervention model description

two interventional group

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes

Inclusion criteria

* BMI \< 35 kg/m² Patients with ASA scores I and II

Exclusion criteria

* Patients who do not want to be included in the study Psychiatric and neurological disease with blurred consciousness Patients with ASA \> 3 BMI \> 35 kg/m² Abnormality in coagulation parameters History of allergy to local anesthetic drugs Infection at the injection site

Design outcomes

Primary

MeasureTime frameDescription
Postoperative opioid consumptionup to 24 hourstramadol consumption in the first 24 hours after surgery

Secondary

MeasureTime frameDescription
NRS scoresAt 1,3, 6, 12, 18, 24 hoursNRS scores in the first 24 hours after surgery
Quality of recovery24 hoursQR15 scores
Nausea and vomitingAt 1,3, 6, 12, 18, 24 hoursNausea and vomiting scores in the first 24 hours

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026