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Adding Magnesium Sulphate to Combined Pectointercostal Plane and Erector Spinae Plane Blocks for Acute and Chronic Post-Mastectomy Pain

NCT07438366 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-02-27

No results posted yet for this study

Summary

Given the burden of chronic postmastectomy pain and the need for effective, opioid-sparing analgesia, the propose of the randomized controlled trial is to evaluate the safety and efficacy of adding magnesium sulphate to the combination of PIP block and ESPB in patients undergoing modified radical mastectomy for reducing acute and chronic post mastectomy pain

Conditions

  • Post-mastectomy Pain Syndrome

Interventions

PROCEDURE

Pectointercostal Plane Block (PIPB)

A high-frequency linear ultrasound probe will be placed at the level of the 2nd-3rd rib, medial to the pectoralis major muscle. The pectointercostal fascial plane located between the pectoralis major muscle and the external/internal intercostal muscles will be identified. Under in plane ultrasound guidance, the needle will be advanced into this plane, and the study drug will be administered. All patients will receive 20 mL of 0.25% bupivacaine; however, patients in Group M will additionally receive magnesium sulphate 150 mg diluted to 5 mL, which will be injected into the same plane.

PROCEDURE

Erector Spinae Plane Block (ESPB)

For this block, the patient will be positioned laterally. The ultrasound probe will be placed at the T3-T5 vertebral level to visualize the transverse process. An in- plane technique will be used to advance the needle into the deep fascial plane beneath the erector spinae muscle. Once the correct position is confirmed, 20 mL of 0.25% bupivacaine will be injected, with Group M patients receiving an additional 150 mg of magnesium sulphate diluted to 5 mL. The total magnesium dose administered in Group M will be 300 mg. Negative aspiration will be performed prior to each injection to avoid intravascular administration.

DRUG

Magnesium sulfate

All patients will receive 20 mL of 0.25% bupivacaine; however, patients in Group M will additionally receive magnesium sulphate 150 mg diluted to 5 mL, which will be injected into the same plane. The total magnesium dose administered in Group M will be 300 mg

Sponsors & Collaborators

  • Assiut University

    collaborator OTHER

  • South Egypt Cancer Institute

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-02-15
Primary Completion
2026-11-01
Completion
2027-02-15

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07438366 on ClinicalTrials.gov