Magnesium Sulphate in Oblique Subcostal TAP Block

Postoperative Pain Management Clinical Trial

Official title:

Comparative Evaluation of Different Doses of Magnesium Sulphate in Oblique Subcostal TAP Block for Laparoscopic Cholecystectomy: a Randomized Double-blind Controlled Study

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06148168
• Other study ID #: Post operative pain
• Status: Not yet recruiting
• Phase: Phase 2/Phase 3
• Start date: January 1, 2024
• Est. completion date: February 20, 2025

Study information

• Verified date: November 2023
• Source: Assiut University
• Contact: Mahmoud Yamany
• Phone: 01229038037
• Email: m_yamany2016[@]yahoo.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The aim of this study is to evaluate the effect of adding different doses of MgSO4 to bupivacaine via OSCTAB block on postoperative pain control for 24 hours in patients scheduled for LC.

Description:

Laparoscopic cholecystectomy (LC) is a gold standard for management of gallbladder stones. Early and easily recovery, less operative morbidities, less postoperative pain, improved cosmetics, less hospitalization days and decreased cost are the superiorities of laparoscopic cholecystectomies over open surgical procedures.

Postoperative pain is the major obstacle for early postoperative ambulation and prolongs the hospital stay. Moreover, it has been hypothesized that intense acute pain after LC may predict development of chronic pain (e.g., post laparoscopic cholecystectomy syndrome). So, aggressive perioperative pain prevention is mandatory.

This pain is routinely managed using opiates, which has several side effects. Transversus abdominis plane (TAP) block is a regional anesthetic technique that has gradually become an alternative for postoperative pain control during laparoscopic abdominal surgeries. It involves the infusion of local anesthetic into the fascial plane of the abdominal wall. Oblique subcostal transversus abdominis plane (OSCTAP) block is an US-guided regional anesthesia technique that anesthetizes the nerves of the lower and upper anterior abdominal wall, specifically from T6 to L1.

Rafi et al and McDonnell et al were the first to describe (OSCTAP) block. They described an anatomical landmark technique and provided evidence of blockade to the mid/lower thoracic and upper lumbar spinal nerves as they travelled in the fascial plane between the transversus abdominis (TA) and internal oblique (IO) muscles.

Evidence supporting the presence of (NMDA) receptors in skin and muscles have led to the use of (MgSO4) which is NMDA antagonist via different routes.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 72
• Est. completion date: February 20, 2025
• Est. primary completion date: January 20, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• • Patients programmed for elective LC.

• American society of anesthesiologists (ASA) physical state I or II.

• Age over 18 years and less than 60 years old.

• Patients of both sex are included in the study.

Exclusion Criteria:

• • Patient refusal.

• Known hypersensitivity to the study drugs.

• Body Mass Index > 40 kg/m2.

• Inability to accurately describe postoperative pain to investigators.

• Opioid tolerance or dependence.

• Preexisting history of chronic pain.

• History of renal, liver, cardiac, neuropsychiatric disorder problems.

• Bleeding or coagulation abnormality.

Related Conditions & MeSH terms

• Pain, Postoperative
• Postoperative Pain Management

Intervention

Drug:
• Bupivacaine plus normal saline
Unlike specific peripheral nerve blocks, TAP block is a non-dermatomal "field block". Even with the same US-guided technique, the extent of spread of local anesthetics can be variable due to individual anatomical variations (18). In order to perform the blocks, abdominal skin will be prepared and covered with sterile drapes. The needle can be introduced by multiple punctures along the oblique subcostal line from the xiphoid process towards the anterior part of the iliac crest .Thus, LA will be injected in the TAP along this line provides both upper and lower abdominal wall analgesia. The OSCTAP block more consistently covers L1 dermatome. After negative aspiration, a test injection with 1 ml of 0.9% normal saline will be performed to confirm the needle location. If the intended sensation will not decreased in surgical dermatomes after 30 min, the patient will be regarded to have a failed block and will be excluded from the study.
• Bupivacaine plus normal saline containing MgSO4
Bupivacaine plus normal saline containing MgSO4

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Assiut University

References & Publications (2)

Altiparmak B, Korkmaz Toker M, Uysal AI, Kuscu Y, Gumus Demirbilek S. Ultrasound-guided erector spinae plane block versus oblique subcostal transversus abdominis plane block for postoperative analgesia of adult patients undergoing laparoscopic cholecystectomy: Randomized, controlled trial. J Clin Anesth. 2019 Nov;57:31-36. doi: 10.1016/j.jclinane.2019.03.012. Epub 2019 Mar 6. — View Citation

Grape S, Kirkham KR, Akiki L, Albrecht E. Transversus abdominis plane block versus local anesthetic wound infiltration for optimal analgesia after laparoscopic cholecystectomy: A systematic review and meta-analysis with trial sequential analysis. J Clin Anesth. 2021 Dec;75:110450. doi: 10.1016/j.jclinane.2021.110450. Epub 2021 Jul 6. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The effect of adding different doses of MgSO4 to bupivacaine via OSCTAB block on postoperative pain according to (NRS) for 24 hours in patients scheduled for LC.	NRS Score: used to assess pain intensity . It is one of the most commonly used pain scales in medicine. The NRS consists of a numeric version of the visual analog scale. It is a horizontal line with an eleven point numeric range. It is labeled from zero to ten, with zero being an example of someone with no pain and ten being the worst pain possible . This scale can be administered verbally. Rescue analgesia will be nalbuphine 0.1 mg/kg IV when the NRS = 4.	24 hours postoperatively