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Modified Radical MastectomyPhase 3FMASUMD66/2025NCT06947330

Comparison Between Erector Spinae Plane Block Versus Serratus Anterior Plane Block Regarding Analgesia Post Modified Radical Mastectomy

A Phase 3 study testing Unilateral Erector Spinae group and Unilateral Serratus Anterior group in people with Modified Radical Mastectomy and Breast Cancer, run by Kholoud Usama at 1 site in Egypt.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The goal of this clinical trial is to compare Ultrasound Guided Erector Spinae and Ultrasound Guided Serratus Anterior Plane Block post Modified Radical Mastectomy in adult females. Read more about this study

Who is it for?
Ages 21 to 65 years, women only
Conditions the study is for
Modified Radical Mastectomy, Breast Cancer
What is being tested?
Unilateral Erector Spinae group and Unilateral Serratus Anterior group
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
100 participants
Where
1 siteEgypt
Study dates
3 Mar 2025to 4 Mar 2026
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 21 to 65 years
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • ASA Physical Status II, or III.
  • Age 21 - 65 years.
  • Female gender

Who cannot join

  • ASA IV, V, VI.
  • Infection at site of block.
  • Coagulopathy, or patients on antiplatelets, or anticoagulants.
  • Previous anesthetic allergy to bupivacaine.
  • Distant organ metastasis.
  • Male gender.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Egypt1 site, 1 recruiting
  • Faculty of Medicine, Ain-Shams University

    Cairo, Waili, 0000

    Kholoud Usama Soliman, Master degree, +20 01285303039, kholoud.usama@med.asu.edu.eg

    Amir Ibrahim Mohamed Salah, Doctorate degree, Professor

    Recruiting

Other trials in Egypt

About this study

Official title: Comparison Between Ultrasound Guided Erector Spinae Plane Block Versus Ultrasound Guided Serratus Anterior Plane Block Regarding Analgesia Post Modified Radical Mastectomy

The goal of this clinical trial is to compare Ultrasound Guided Erector Spinae and Ultrasound Guided Serratus Anterior Plane Block post Modified Radical Mastectomy in adult females. the main questions it aims to answer are:

  • Which of the two blocks has a better analgesic effect?
  • Which of the two blocks is safer as regards inducing a pneumothorax and affecting the hemodynamics?
Read more

Participants:

  • Will be divided into two groups after signing the informed consent.
  • After being anesthetized and before surgical incision; the blocks will be given to the patient.
  • Lung Ultrasound will be done for each patient to rule out pnemothorax once before the surgery and another after the end of surgery while the patient is being anesthetized.
  • Patients that will experience pneuomothorax will be excluded from the study, and will be treated according to its size.
  • Follow up of the patient for 24 hours postoperative to record the VAS score continuously, with giving increments of pethidine intravenously to relief pain.
Read the detailed description

Breast surgeries belong to the most frequently performed procedures and are often associated with a high intensity of pain in the postoperative period.

Regional anesthesia techniques, have been the gold standard of postoperative pain management for breast surgeries. In recent years, the development of new techniques of regional anesthesia, which is due to the extensive implementation of ultrasound imaging, has enabled the use of a number of new blockades.The core mechanism of action in fascial blocks consists of blocking the nerve structures that supply a certain area of the trunk after deposition of local anesthetic within the fascial and fasciomuscular compartments. According to the current state of knowledge, the available options include Erector spinae plane block (ESPB) and Serratus anterior plane block (SAPB), however their recommendation in breast surgery requires more extensive scientific evidence.

Serratus anterior plane block acts on lateral branches of the intercostals nerves, blocking pain reception in the chest wall, while Erector spinae plane block involves the deposition of local anesthetic in the interfascial plane between erector spinae muscle and tips of the transverse processes of the vertebrae.

There is a scarcity of literature comparing ESPB and SAPB in patients undergoing breast surgeries.

Proponents of these techniques champion their ability to provide efficacious analgesia and anesthesia whereas critics cite a reportedly high failure rate and complications such as pneumothorax.

The German S3-guidelines suggest Lung Ultrasound as a possible alternative to Chest X-ray for the diagnosis of post-interventional pneumothorax.

Dexamedetomidine is a highly selective drug α2-adrenergic receptor agonist. Dexmedetomidine has the characteristics of sedation, analgesia, anti-anxiety, inhibition of sympathetic activity, mild respiratory inhibition, and stable hemodynamics. Numerous studies has revealed that dexmedetomidine in peripheral nerve blocks can shorten the onset time of anesthesia and prolong the time of sensory and motor nerve blocks.

Being tested
Unilateral Erector Spinae group, Unilateral Serratus Anterior group
Keywords
Breast Cancer, Modified Radical Mastectomy, Peripheral Nerve Block, Dexmedetomidine, Erector Spinae Plane Block, Serratus Anterior Plane Block, Ultrasound Guided, Adult Female
Medical subject headings
Breast Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Unilateral Erector Spinae groupProcedure or surgery

    Also called Peripheral Nerve Block using Precedex, Erector Spinae block with Precedex as an adjuvant drug

    On injecting 30 ml of bupivacaine 0.25% with 20 mcg Dexamedetomidine into the interfacial plane below erector spinae; a manifest linear pattern will be visualized uplifting the muscle.

  • Unilateral Serratus Anterior groupProcedure or surgery

    Also called Peripheral Nerve Block using dexmedetomidine, Serratus Anterior Block with dexmedetomidine as an adjuvant drug

    Once the needle will be in perfect position, confirmed by hydro-dissection on injecting 2-3 ml of normal saline, then 30 ml of bupivacaine 0.25% with 20 mcg Dexamedetomidine.

Study groups in NCT06947330
Study groupRoleWhat they receive
Unilateral Erector Spinae groupActive comparator-The patient will be turned to the lateral decubitus position and the surgical side superiorly. After proper sterilization; The linear probe will be put in a parasagittal plane over the transverse process of thoracic 4 or thoracic 5 vertebrae, approximately 2.5 cm lateral to the spinous processes. The transverse process has a square form contour as compared to the rib which is rounded form contour. Then the 3 muscle layers or sheets with facial plane are distinguished from superficial to deep as trapezius, rhomboid major, and erector spinae with flickering pleura in between the transverse processes. The block will be managed unilaterally by in-plane technique using 22-gauge, 50 mm, echogenic needle which will be inserted in a cranial-caudal orientation and the block needle will be proceeded through the trapezius, rhomboid major, and erector spinae to smoothly contact the transverse process. Needle location will be confirmed by hydro-dissection on injecting 2-3 ml normal saline.
Receives: Procedure: Unilateral Erector Spinae group
Unilateral Serratus Anterior groupActive comparator-After skin sterilization, with the patient in the lateral decubitus position and the side of surgery superiorly, the ultrasound linear probe will be put longitudinally oblique just below the mid-clavicle. After distinguish the second rib, the probe will be mobilized caudally and laterally (obliquely), towards the mid-axillary line to distinguish the third, fourth and fifth ribs. The ideal and definite probe position has its cephalad end at the anterior axillary line and the caudal end at the posterior axillary line. The facial plane between the serratus anterior muscle and ribs four and five will be identified between the 4th and 5th rib in the mid-axillary region. Under sonar guided, 50 mm echogenic needle will be advanced in-plane to introduce this facial plane in cranio-caudal direction.
Receives: Procedure: Unilateral Serratus Anterior group

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Visual Analog Score for pain

    • After extubation, the patient will be discharged from the operating room. VAS will be used to assess the postoperative pain (Myles et al., 2017).
    • Visual analogue scale score:

    Grade 0 (0-1 units on a scale): Good analgesia. Grade I (2-4 units on a scale): Moderate analgesia Grade II (5-7 units on a scale): Mild analgesia Grade III (8-10 units on a scale): No analgesia.

    • If VAS >3 units on a scale postoperatively, IV increment of pethidine 30 mg diluted in 5 ml saline will be given.
    • VAS ranging from (0 units on a scale) no pain, to (10 units on a scale) severe intolerable pain;

    Measured: at 0, 2, 4, 6, 8, 16, 20, 24 hours postoperatively

Secondary outcomes (4)
  1. Total dose of pethidine in mg.

    If VAS >3 units on a scale postoperatively, IV increment of pethidine 30 mg diluted in 5 ml saline will be given.

    Measured: at 0, 2, 4, 6, 8, 16, 20, 24 hours postoperatively

  2. Duration of analgesia postoperatively in hours.

    If VAS >3 units on a scale postoperatively, IV increment of pethidine 30 mg diluted in 5 ml saline will be given.

    Measured: at 0, 2, 4, 6, 8, 16, 20, 24 hours postoperatively

  3. Rate of vital data changes over the postoperative period

    HR and MBP will be measured upon arrival to the PACU and after 30 min, then every hour if the patients remain in the PACU.

    In the surgical ward, vital signs (HR, SBP, MBP, DBP) as well as pain intensity will be assessed every 2 hour during the first 6 hours and then every 6 hours for 24 hours postoperatively.

    Measured: every 2 hour during the first 6 hours and then every 6 hours for 24 hours postoperatively.

  4. Incidence of pneumothorax

    • Measurement tool: Lung ultrasound
    • After giving the block in each group, Lung Ultrasound will be performed on patients in the supine body position. The transducer will be placed longitudinally at the highest point of the anterior thorax, then moved along the intercotal spaces of the parasternal line and laterally, between the anterior and posterior axillary line, checking for lung sliding and lung point in 2D B-mode, and for seashore or stratosphere sign in M-mode. The hemithorax without intervention was examined first and then compared to the hemithorax with intervention.
    • The Lung Ultrasound will be repeated after the end of the surgery, while the patient is anesthetized, and before extubation. Cases of pneumothoraces either large or small will be excluded from the study.

    Measured: Intra-operatively

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Apr 2025
  2. Study start3 Mar 2025
  3. Primary completion3 Mar 2026 (estimated)
  4. Study completion4 Mar 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Model description
Sampling method will be simple random. Patients will be randomly assigned into one of the following groups using opaque sealed envelopes: 1. Group A (50 patients); will receive ultrasound guided Erector Spinae Plane Block. 2. Group B (50 patients); will receive ultrasound guided Serratus Anterior Plane Block.
Masking
Double blind
Who is masked
Participant, Care provider
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06947330
Sponsor's protocol ID
FMASU-MD66/2025
Acronym
FMASUMD66/2025
Status last verified
Apr 2025
First submitted
13 Apr 2025
Last updated
27 Apr 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Chen Z, Liu Z, Feng C, Jin Y, Zhao X. Dexmedetomidine as an Adjuvant in Peripheral Nerve Block. Drug Des Devel Ther. 2023 May 17;17:1463-1484. doi: 10.2147/DDDT.S405294. eCollection 2023.

    PubMed 37220544
  • Abd Elmohsen Bedewy A, Mohamed MS, Sultan HM, Khalil MS. Comparison Between Erector Spinae Plane Block versus Serratus Anterior Plane Block Regarding Analgesia and Stress Response After Modified Radical Mastectomy: Randomized Controlled Trial. Anesth Pain Med. 2024 Mar 26;14(2):e142189. doi: 10.5812/aapm-142189. eCollection 2024 Apr.

    PubMed 38741901

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Unilateral Erector Spinae group and Unilateral Serratus Anterior group in people with Modified Radical Mastectomy and Breast Cancer, run by Kholoud Usama at 1 site in Egypt.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 27 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Visual Analog Score for pain (time frame: at 0, 2, 4, 6, 8, 16, 20, 24 hours postoperatively). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06947330, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Apr 2025.

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