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

NCT07789600 — Not applicable, Not yet recruiting, 70 participants, King Hussein Cancer Center

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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

RegistryNCT07789600
StatusNot yet recruiting
PhaseNot applicable
Study typeInterventional; randomized, parallel, masking: triple, supportive care
Enrollment70 (Estimated)
SponsorKing Hussein Cancer Center (Other)
ConditionsModified Radical Mastectomy
InterventionsMagnesium Sulfate 750 mg with Bupivacaine 0.5% for Local Wound Infiltration, Bupivacaine 0.5% + Normal Saline (Drug)
Datesstart 2026-09-01 (estimated), primary completion 2027-12-01 (estimated), completion 2028-03-01 (estimated), first posted 2026-08-27, last updated 2026-08-31
Locations1 site in Jordan

Related Papers Related Patents Related Grants Related Experts
All trials for Modified Radical Mastectomy All trials of Magnesium Sulfate 750 mg with Bupivacaine 0.5% for Local Wound Infiltration All trials of Bupivacaine 0.5% + Normal Saline

-Summary

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.

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+Arms and interventions

ArmTypeInterventionsDescription
Magnesium Sulfate + BupivacaineExperimentalDrug: Magnesium Sulfate 750 mg with Bupivacaine 0.5% for Local Wound InfiltrationParticipants 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.
Bupivacaine + Normal SalineActive comparatorDrug: Bupivacaine 0.5% + Normal SalineParticipants 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.
  • Magnesium Sulfate 750 mg with Bupivacaine 0.5% for Local Wound Infiltration (Drug): Magnesium sulfate 750 mg added to 0.5% bupivacaine for a single intraoperative local wound infiltration following modified radical mastectomy with axillary clearance.
  • Bupivacaine 0.5% + Normal Saline (Drug): 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.

+Outcome measures

Primary outcomes

  • Overall Postoperative Pain Burden During the First 24 Hours After Surgery [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.

+Eligibility

Sex: All, ages: 18 Years to any

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).

+Locations (1)

FacilityCityCountryStatus
King Hussien Cancer CentreAmmanJordan

+Publications

  • Antel R, Ingelmo P. Local anesthetic systemic toxicity. CMAJ. 2022 Sep 26;194(37):E1288. doi: 10.1503/cmaj.220835. No abstract available. PMID 36162843
  • Rosenberg PH, Veering BT, Urmey WF. Maximum recommended doses of local anesthetics: a multifactorial concept. Reg Anesth Pain Med. 2004 Nov-Dec;29(6):564-75; discussion 524. doi: 10.1016/j.rapm.2004.08.003. PMID 15635516
  • Stamenkovic DM, Bezmarevic M, Bojic S, Unic-Stojanovic D, Stojkovic D, Slavkovic DZ, Bancevic V, Maric N, Karanikolas M. Updates on Wound Infiltration Use for Postoperative Pain Management: A Narrative Review. J Clin Med. 2021 Oct 11;10(20):4659. doi: 10.3390/jcm10204659. PMID 34682777
  • Albrecht E, Kirkham KR, Liu SS, Brull R. Peri-operative intravenous administration of magnesium sulphate and postoperative pain: a meta-analysis. Anaesthesia. 2013 Jan;68(1):79-90. doi: 10.1111/j.1365-2044.2012.07335.x. Epub 2012 Nov 1. PMID 23121612
  • Eldaba AA, Amr YM, Sobhy RA. Effect of wound infiltration with bupivacaine or lower dose bupivacaine/magnesium versus placebo for postoperative analgesia after cesarean section. Anesth Essays Res. 2013 Sep-Dec;7(3):336-40. doi: 10.4103/0259-1162.123227. PMID 25885979
  • 5. Dabbagh A, Elyasi H, Fathololoumi S, Fathi M. Magnesium sulfate infiltration of pectoralis major muscle for analgesia after mastectomy: A randomized controlled trial. Regional Anesthesia and Pain Medicine. 2021;46(8):655-661.
  • 4. Alshawadfy A, Abdel-Ghaffar M, Magdy N. Comparative analgesic efficacy of adding magnesium sulphate to bupivacaine in serratus anterior plane block to reduce pain after mastectomy. Southern African Journal of Anaesthesia and Analgesia. 2022;28(6):235-240. doi:10.36303/SAJAA.2022.28.6.2783
  • Tauzin-Fin P, Sesay M, Svartz L, Krol-Houdek MC, Maurette P. Wound infiltration with magnesium sulphate and ropivacaine mixture reduces postoperative tramadol requirements after radical prostatectomy. Acta Anaesthesiol Scand. 2009 Apr;53(4):464-9. doi: 10.1111/j.1399-6576.2008.01888.x. Epub 2009 Feb 18. PMID 19226292
  • Dave S, Gopalakrishnan K, Krishnan S, Natarajan N. Analgesic Efficacy of Addition of Magnesium Sulfate to Bupivacaine in Wound Infiltration Technique in Perianal Surgeries. Anesth Essays Res. 2022 Apr-Jun;16(2):250-254. doi: 10.4103/aer.aer_107_22. Epub 2022 Oct 7. PMID 36447918
  • Kundra S, Singh RM, Singh G, Singh T, Jarewal V, Katyal S. Efficacy of Magnesium Sulphate as an Adjunct to Ropivacaine in Local Infiltration for Postoperative Pain Following Lower Segment Caesarean Section. J Clin Diagn Res. 2016 Apr;10(4):UC18-22. doi: 10.7860/JCDR/2016/17119.7683. Epub 2016 Apr 1. PMID 27190924