Trial Evaluating the Analgesic Efficacy of Magnesium Sulfate as an Adjuvant to Bupivacaine in Local Wound Infiltration for Patients Undergoing Modified Radical Mastectomy (MRM) With Axillary Clearance

August 27, 2026 updated by: King Hussein Cancer Center

A Double-Blind, Randomized Controlled Trial Evaluating the Analgesic Efficacy of Magnesium Sulfate as an Adjuvant to Bupivacaine in Local Wound Infiltration for Patients Undergoing Modified Radical Mastectomy (MRM) With Axillary Clearance

This is a double-blind, randomized, controlled clinical trial evaluating the analgesic efficacy and safety of magnesium sulfate as an adjuvant to bupivacaine for local wound infiltration in patients undergoing modified radical mastectomy with axillary clearance. Participants will be randomized to receive either magnesium sulfate 750 mg with bupivacaine or the control intervention. Postoperative pain, analgesic requirements, and safety outcomes will be assessed during the postoperative period, including a follow-up safety assessment between Day 7 and Day 14 after surgery.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

70

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

  • Name: Supervisor, Clinical Trials Unit
  • Phone Number: 1342 +962 6 5300460
  • Email: FZahran@KHCC.JO

Study Contact Backup

  • Name: Clinical Research Coordinator
  • Phone Number: +962 788390734
  • Email: aa.18586@KHCC.JO

Study Locations

  • Jordan
      • Amman, Jordan
        • King Hussien Cancer Centre
        • Contact:
          • Supervisor, Clinical Trials Unit
          • Phone Number: 1342 +962 6 5300460
          • Email: FZahran@KHCC.JO
        • Contact:
          • Clinical Research Coordinator, 0.22
          • Phone Number: 1342 +962 788390734
          • Email: aa.18586@KHCC.JO

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult female patients (age ≥18 years) undergoing elective modified radical mastectomy (MRM) with axillary clearance.
  • ASA physical status I-III.
  • Willingness to participate and provide informed consent.

Exclusion Criteria:

  • Allergy to bupivacaine or magnesium.
  • Chronic opioid use or pre-existing chronic pain conditions.
  • Significant renal or hepatic impairment.
  • Pregnancy or lactation.
  • Neuromuscular disorders.
  • Abnormal baseline serum magnesium levels (e.g., hypermagnesemia).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Magnesium Sulfate + Bupivacaine
Participants will receive a single intraoperative local wound infiltration following modified radical mastectomy with axillary clearance, consisting of 750 mg magnesium sulfate combined with 0.5% bupivacaine. The planned bupivacaine dose is 100 mg (20 mL), subject to reduction if it exceeds the participant-specific maximum allowable dose based on body weight.
Drug: Magnesium Sulfate 750 mg with Bupivacaine 0.5% for Local Wound Infiltration
Magnesium sulfate 750 mg added to 0.5% bupivacaine for a single intraoperative local wound infiltration following modified radical mastectomy with axillary clearance.
Active Comparator: Bupivacaine + Normal Saline
Participants will receive a single intraoperative local wound infiltration following modified radical mastectomy with axillary clearance, consisting of 0.5% bupivacaine combined with normal saline. The planned bupivacaine dose is 100 mg (20 mL), subject to reduction if it exceeds the participant-specific maximum allowable dose based on body weight.
Drug: Bupivacaine 0.5% + Normal Saline
A single intraoperative local wound infiltration of 0.5% bupivacaine combined with normal saline following modified radical mastectomy with axillary clearance. The planned bupivacaine dose is 100 mg (20 mL), subject to reduction if it exceeds the participant-specific maximum allowable dose based on body weight.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall Postoperative Pain Burden During the First 24 Hours After Surgery
Time Frame: From the end of surgery through 24 hours postoperatively.
Area under the curve (AUC) of Visual Analogue Scale (VAS) pain scores at rest during the first 24 hours after surgery. The Visual Analogue Scale (VAS) ranges from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain; higher scores indicate worse pain.
From the end of surgery through 24 hours postoperatively.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

King Hussein Cancer Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

September 1, 2026

Primary Completion (Estimated)

December 1, 2027

Study Completion (Estimated)

March 1, 2028

Study Registration Dates

First Submitted

August 24, 2026

First Submitted That Met QC Criteria

August 24, 2026

First Posted (Actual)

August 27, 2026

Study Record Updates

Last Update Posted (Actual)

August 31, 2026

Last Update Submitted That Met QC Criteria

August 27, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 25 KHCC 159

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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