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Post-mastectomy Pain SyndromeNCT04317898

Ultrasound-Guided Serratus Plane Block Vs Paravertebral Block For Chronic Post-mastectomy Pain.

A study testing serratus plane block by ultra-sound and paravertebral block by ultra-sound in people with Post-mastectomy Pain Syndrome, run by Assiut University.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

compare the analgesic efficacy between ultrasound paraverbral block and serratus block in post mastectomy pain. Read more about this study

Who is it for?
Ages 18 to 70 years, women only
Conditions the study is for
Post-mastectomy Pain Syndrome
What is being tested?
serratus plane block by ultra-sound and paravertebral block by ultra-sound
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
50 participants
Where
No sites listed yet
Study dates
Jul 2020to Jun 2021
Phase
Interventional
Are there results?
None posted in the registry

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 18 to 70 years
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients have postmastectomy pain of neuropathic nature, DN4
  • 4 for at least 3ms duration.
  • The intensity of postmastectomy pain on VAS score ≥ 5.
  • Unsatisfactory treatment with 1st line antineuropathic drugs, Pregabalin(150 mg daily) or Deloxetine(60mg daily).

Who cannot join

  • Infection of the skin at or near site of needle puncture.
  • Coagulopathy .
  • Drug hypersensitivity or allergy to the studied drugs.
  • Central or peripheral neuropthy .
  • Significant organ dysfunction .
  • Morbid obesity (BMI>35kg/m2) .
  • Vertebral anomalies.

Trial locations and contacts

No sites are listed yet.

Aya Abo Eldahab Ali Eldein, Resident contact

01068744428

totaaboeldahab8@gmail.com

About this study

compare the analgesic efficacy between ultrasound paraverbral block and serratus block in post mastectomy pain.

Read the detailed description

It is reported that postmastectomy pain syndrome (PMPS) is a common problem, ranging from 25% to 60%.

The pain is localized in the axilla, medial upper arm, breast, and/or chest wall and lasting beyond three months after surgery when all other causes of pain such as infection have been eliminated.

The pain seriously affects the patient's mood, everyday activities, and social function and causes heavy economic burden for the healthcare system.

Postmastectomy pain syndrome (PMPS) itself is not a specific diagnosis but rather describes a cluster of symptoms frequently observed in breast cancer survivors following treatment.

Many patients will experience short-term nociceptive pain after breast cancer treatment. However, with PMPS, patients frequently experience persistent neuropathic-type pain: burning, tingling, aching, a subjective sense of "tightness" around the chest wall, or even phantom breast or nipple pain. Neuropathic pain results from dysfunction of the peripheral nerves caused by surgery, radiation, or neurotoxic chemotherapies.

Currently, there are a wide variety of approaches to treat this type of pain. physical therapy has been employed as a modality to improve physical function.

As far as interventional procedures, intercostal nerve blockade, stellate ganglion blockade, and paravertebral blockade have all been utilized with varying degrees of success.

Paraverberal blocks have superseded thoracic epidurals when it comes to choice of a regional anaesthesia technique to provide analgesia for breast surgery.

The injection of local anaesthetic solution in the paravertebral space results in a unilateral block, which is sensory, motor, and sympathetic. The uptake of the local anaesthetic solution is enhanced due to the absence of fascial sheaths binding the spinal nerves.

Another potential target for an interventional procedure for chronic pain after treatment for breast cancer is the serratus plane. The serratus plane block is a novel ultrasound-guided nerve block, which is able to anesthetize the hemithorax.

The serratus plane block relies on the fact that there are branches of the intercostal nerves following within 2 potential spaces, one superficial and one deep, surrounding the serratus anterior muscle. The serratus anterior muscle arises as strips from the first 9 ribs and converges posteriorly on the scapula to form the medial wall of the axilla.

The innervation of the serratus anterior muscle is via the long thoracic nerve (Bell's nerve), and the nerve itself is covered by the fascia of the serratus anterior muscle and lies anterior to the muscle.

Being tested
serratus plane block by ultra-sound, paravertebral block by ultra-sound

What participants receive

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

  • serratus plane block by ultra-soundProcedure or surgery

    To perform Serratus block, patients will be placed in the lateral decubitus position with the affected side facing up, or in the prone position with the affected side facing the operator . After sterile preparation, a linear ultrasound probe will be utilized to identify the latissimusdorsi and serratus anterior muscles in a sagittal plane. The plane superficial to the serratus anterior muscle and below the latissimusdorsi muscle will be identified. The skin will be topicalized with 1 mL of 1% lidocaine using a 30-gauge needle. Using an in-plane approach, a 25-gauge 1.5-cm needle will be used to inject a total of 20-mL of 0.25% bupivacaine with 80 mg of triamcinlone under direct ultrasound visualization.

  • paravertebral block by ultra-soundProcedure or surgery

    TPVB will be given using high frequency linear US transducer, place the probe parallel to the vertebral spine at T2 level and shifted 2-3 cm laterally to obtain the appropriate visualization. Following the identification of plura, transverse process and paravertebral space, the needle will be inserted in caudocranial direction using in-plane approach. Confirm negative vessel or pleural breach via aspiration then proceed with local anaesthetic 10ml of 0.25% bubivacine and 80mg triamcinlone slowly; the pleura will be seen to be pushed downward.

Study groups in NCT04317898
Study groupRoleWhat they receive
serratus plane blockActive comparator20 ml of Bupivacine 0.25% +80mg triamcinlone will be injected in serratus plane under ultrasound.
Receives: Procedure: serratus plane block by ultra-sound
paravertebral blockActive comparator10 ml of bubivacine 0.25% +80 mg triamcinlone will be injected at T2 level (paravertebral) under ultrasound.
Receives: Procedure: paravertebral block by ultra-sound

What is being measured

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

  1. Percentage of patients gaining ≥ 50% pain reduction at VAS Score from baseline value.

    Compare the analgesic efficacy between ultrasound paraverbral block and serratus block in chronic postmastectomy pain.

    Measured: baseline

Timeline

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

  1. First posted23 Mar 2020
  2. Study startJul 2020 (estimated)
  3. Primary completionApr 2021 (estimated)
  4. Study completionJun 2021 (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 N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Care provider
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04317898
Sponsor's protocol ID
analgesia in chronic PMPs
Status last verified
Jul 2020
First submitted
20 Mar 2020
Last updated
15 Jul 2020
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Gartner R, Jensen MB, Nielsen J, Ewertz M, Kroman N, Kehlet H. Prevalence of and factors associated with persistent pain following breast cancer surgery. JAMA. 2009 Nov 11;302(18):1985-92. doi: 10.1001/jama.2009.1568.

    PubMed 19903919
  • Smith WC, Bourne D, Squair J, Phillips DO, Chambers WA. A retrospective cohort study of post mastectomy pain syndrome. Pain. 1999 Oct;83(1):91-5. doi: 10.1016/s0304-3959(99)00076-7.

    PubMed 10506676
  • Couceiro TC, Menezes TC, Valenca MM. Post-mastectomy pain syndrome: the magnitude of the problem. Rev Bras Anestesiol. 2009 May-Jun;59(3):358-65. doi: 10.1590/s0034-70942009000300012. English, Portuguese.

    PubMed 19488550
  • Peuckmann V, Ekholm O, Rasmussen NK, Groenvold M, Christiansen P, Moller S, Eriksen J, Sjogren P. Chronic pain and other sequelae in long-term breast cancer survivors: nationwide survey in Denmark. Eur J Pain. 2009 May;13(5):478-85. doi: 10.1016/j.ejpain.2008.05.015. Epub 2008 Jul 16.

    PubMed 18635381
  • Fernandez-Lao C, Cantarero-Villanueva I, Fernandez-de-Las-Penas C, del Moral-Avila R, Castro-Sanchez AM, Arroyo-Morales M. Effectiveness of a multidimensional physical therapy program on pain, pressure hypersensitivity, and trigger points in breast cancer survivors: a randomized controlled clinical trial. Clin J Pain. 2012 Feb;28(2):113-21. doi: 10.1097/AJP.0b013e318225dc02.

    PubMed 21705873
  • Wijayasinghe N, Andersen KG, Kehlet H. Neural blockade for persistent pain after breast cancer surgery. Reg Anesth Pain Med. 2014 Jul-Aug;39(4):272-8. doi: 10.1097/AAP.0000000000000101.

    PubMed 24918332

Questions about this trial

What is this clinical trial studying?

A study testing serratus plane block by ultra-sound and paravertebral block by ultra-sound in people with Post-mastectomy Pain Syndrome, run by Assiut University.

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 4 inclusion and 7 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: status not confirmed, as of the sponsor's last update on 15 Jul 2020. Status can change between updates, so confirm with the study contact before making plans.

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.

Are results available for this study?

Results are not available in the source record.

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

Contact Aya Abo Eldahab Ali Eldein, Resident (01068744428, totaaboeldahab8@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of patients gaining ≥ 50% pain reduction at VAS Score from baseline value. (time frame: baseline). 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 NCT04317898, which also lists 6 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 15 Jul 2020.

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