AzTrials
AzTrials

Chronic Subdural HematomaPREMMANCT06466733

Puerto Rico Embolization of the Middle Meningeal Artery for the Treatment of Chronic Subdural Hematoma Trial (PREMMA)

A study testing Embolization of the middle meningeal artery and Surgical Evacuation via burr hole or craniotomy in people with Chronic Subdural Hematoma, run by Juan M. Ramos Acevedo.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
Search all trials

Trial summary

Puerto Rico Embolization of the Middle Meningeal Artery (PREMMA) trial is a multi-center, parallel, prospective, superiority, randomized controlled trial with concealed allocation comparing reoperation rates and neurological outcomes in patients with chronic subdural hematoma that receive treatment via embolization of… Read more about this study

Who is it for?
Ages 21 years and older
Conditions the study is for
Chronic Subdural Hematoma
What is being tested?
Embolization of the middle meningeal artery and Surgical Evacuation via burr hole or craniotomy
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
658 participants
Where
No sites listed yet
Study dates
May 2025to Jul 2032
Phase
Interventional
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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥ 21
  • Speak and understand Spanish or English
  • Resident of Puerto Rico
  • Glasgow coma scale ≥ 14/15
  • Presence of cSDH on non-contrast computed tomography (NCCT) or magnetic resonance imaging (MRI)
  • Neurological indication for treatment of cSDH (Markwalder scale ≤ 2)
  • No previous surgical or endovascular treatment for symptomatic cSDH
  • Signed informed consent for participation in the study by the patient or legally authorized representative

Who cannot join

  • Acute subdural hematoma
  • Focal, non-hemispheric localization of cSDH
  • Evidence of other lesions associated with cSDH, such as neoplasms, vascular lesions, or additional epidural, subarachnoid, or parenchymal hemorrhage on non-contrast computed tomography or magnetic resonance imaging
  • Imaging evidence of skull fracture over the subdural hematoma
  • Presence of any cerebrospinal fluid (CSF) shunt
  • Imaging evidence of midline shift ≥ 10 mm
Show all 15Show fewer
  • Imaging evidence of basal cistern effacement
  • Imaging evidence of dilatation of lateral ventricles
  • Imaging evidence of uncal herniation
  • Modified Rankin scale ≥ 3 before developing symptoms associated with cSDH
  • Contraindications for angiography (i.e., complex anatomy or kidney failure)
  • Comorbidity making follow-up impossible
  • Pregnancy
  • Vulnerable patients, including homeless patients, incarcerated patients, and mentally ill patients without appropriate medical decision-making proxies that the physician believes are incapable of appropriately assessing the risks of the procedure
  • Absence of medical insurance

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

Maria M Garcia Perez contact

939-417-4432

dra.garcia.neurosx@gmail.com

About this study

Puerto Rico Embolization of the Middle Meningeal Artery (PREMMA) trial is a multi-center, parallel, prospective, superiority, randomized controlled trial with concealed allocation comparing reoperation rates and neurological outcomes in patients with chronic subdural hematoma that receive treatment via embolization of the middle meningeal artery versus surgical evacuation via burr hole trephination or craniotomy.

Read the detailed description

Chronic subdural hematoma (cSDH) is a collection of fluid and blood breakdown products that evolves over weeks to months in the subdural space. This condition is more common among people older than 65 years and has been associated with increased use of antithrombotic therapy among this population. The World population is rapidly aging; thus, the investigators expect the number of patients with cSDH will increase. The United Nations World Social Report places Puerto Rico in the 7th place of countries with the largest share of people aged 65 years or over. This pathology burdens healthcare systems; therefore, assessing the feasibility of treatment modalities for cSDH that are less invasive, have lower procedural risks, and have lower recurrence rates that require additional surgical intervention is essential.

The standard of care for symptomatic cSDH is the surgical evacuation (SE) of the hematoma, with recurrence rates between 10-30% and surgical rescue indicated for most of these cases. Evacuation of the hematoma effectively relieves its mass effect but does not change the underlying pathophysiologic mechanism. In recent years, embolization of the middle meningeal artery (eMMA) has been shown to decrease the recurrence of chronic subdural hematoma and the need for revision burr hole or craniotomy. The PREMMA trial aims to compare embolization of the middle meningeal artery as stand-alone treatment for chronic subdural hematoma versus the standard of care, surgical evacuation.

Being tested
Embolization of the middle meningeal artery, Surgical Evacuation via burr hole or craniotomy
Keywords
Chronic subdural hematoma, Embolization of the middle meningeal artery, Surgical evacuation, Hemorrhage, Intracranial hemorrhage, Cerebrovascular disease, Chronic disease
Medical subject headings
Hematoma, Subdural, Chronic, Hemorrhage, Intracranial Hemorrhages, Cerebrovascular Disorders, Chronic Disease

What participants receive

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

  • Embolization of the middle meningeal arteryProcedure or surgery

    Embolization of the middle meningeal artery ipsilateral to the chronic subdural hematoma is performed infusing embolic polyvinyl alcohol (PVA) microparticles.

  • Surgical Evacuation via burr hole or craniotomyProcedure or surgery

    Also called Burr hole, Craniotomy

    The standard of care for chronic subdural hematoma, burr hole or craniotomy are performed ipsilateral to the lesion.

Study groups in NCT06466733
Study groupRoleWhat they receive
Endovascular EmbolizationExperimentalEmbolization of the middle meningeal artery
Receives: Procedure: Embolization of the middle meningeal artery
Surgical Evacuation of HematomaActive comparatorBurr hole or craniotomy
Receives: Procedure: Surgical Evacuation via burr hole or craniotomy

What is being measured

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

  1. Reoperation

    Number of patients requiring reoperation due to recurrent chronic subdural hematoma.

    Measured: 3 months, 6 months, and 12 months

Secondary outcomes (11)
  1. Modified Rankin Scale (mRS)

    The modified Rankin Scale (mRS) will assess neurological disability. The scale comprises seven levels, from 0 to 6, with higher scores indicating greater disability, and 6 indicating death.

    Measured: Pre-operative, 24 hours, 2 weeks, 1.5 months, 3 months, 6 months, and 12 months

  2. Glasgow Coma Scale (GCS)

    The Glasgow coma scale (GCS) will assess consciousness level. GCS score can range from 3 (completely unresponsive) to 15 (completely alert and oriented).

    Measured: Pre-operative, 24 hours, 2 weeks

  3. Visual Analog Scale (VAS)

    The visual analog scale (VAS) will assess pain levels. VAS represents the severity of pain from 0 "no pain" to 10 "very severe pain."

    Measured: Pre-operative, 24 hours, 2 weeks, 1.5 months, 3 months, 6 months, 12 months

  4. Quality of life (EQ-5D-5L)

    Will be measured with the EuroQol 5 dimensions and 5 levels (EQ-5D-5L) grading scale.

    Measured: Pre-operative, 2 weeks, 1.5 months, 3 months, 6 months, 12 months

  5. Radiological outcomes

    Will be measured by routine computed tomography compared with pre-operative images.

    Measured: Pre-operative, 24 hours, 3 months, 6 months, 12 months

  6. Technical success of embolization of the middle meningeal artery (eMMA)

    The rate of unsuccessful eMMA due to technical failure or anatomical issues will be recorded.

    Measured: 24 hours

  7. Procedure-related complications

    Any life-threatening event from enrollment to discharge will be recorded.

    Measured: 24 hours, 2 weeks, 1.5 months, 3 months

  8. Adverse events

    Any unintentional injury or complication involving a prolonged stay, disability at discharge, or death caused by healthcare management, not the underlying disease, will be recorded.

    Measured: 24 hours, 2 weeks, 1.5 months, 3 months

  9. Post-operative morbidity

    All surgical and/or medical complications that occur.

    Measured: 24 hours, 2 weeks, 1.5 months, 3 months

  10. Mortality

    The number of participants among the total number of deaths.

    Measured: 24 hours, 2 weeks, 30 days, 1.5 months, 3 months, 6 months, 12 months

  11. Length of stay

    The patient's hospitalization period.

    Measured: From date of randomization until the date of discharge or date of death from any cause while patient is in hospital, whichever came first, assessed up to 90 days

Timeline

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

  1. First posted20 Jun 2024
  2. Study startMay 2025 (estimated)
  3. Primary completionJul 2031 (estimated)
  4. Study completionJul 2032 (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
Single blind
Who is masked
Outcomes assessor
Enrolment
658 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06466733
Sponsor's protocol ID
2305109135
Acronym
PREMMA
Status last verified
May 2025
First submitted
15 May 2024
Last updated
7 May 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Ropper AH. Beneath a Tough Mother (Dura Mater) - Chronic Subdural Hematoma. N Engl J Med. 2020 Dec 31;383(27):2678-2680. doi: 10.1056/NEJMe2031257. Epub 2020 Dec 16. No abstract available.

    PubMed 33326714
  • Jung YG, Jung NY, Kim E. Independent predictors for recurrence of chronic subdural hematoma. J Korean Neurosurg Soc. 2015 Apr;57(4):266-70. doi: 10.3340/jkns.2015.57.4.266. Epub 2015 Apr 24. No abstract available.

    PubMed 25932293
  • Edlmann E, Giorgi-Coll S, Whitfield PC, Carpenter KLH, Hutchinson PJ. Pathophysiology of chronic subdural haematoma: inflammation, angiogenesis and implications for pharmacotherapy. J Neuroinflammation. 2017 May 30;14(1):108. doi: 10.1186/s12974-017-0881-y.

    PubMed 28558815
  • Moshayedi P, Liebeskind DS. Middle Meningeal Artery Embolization in Chronic Subdural Hematoma: Implications of Pathophysiology in Trial Design. Front Neurol. 2020 Aug 27;11:923. doi: 10.3389/fneur.2020.00923. eCollection 2020.

    PubMed 32973670
  • Henry J, Amoo M, Kissner M, Deane T, Zilani G, Crockett MT, Javadpour M. Management of Chronic Subdural Hematoma: A Systematic Review and Component Network Meta-analysis of 455 Studies With 103 645 Cases. Neurosurgery. 2022 Dec 1;91(6):842-855. doi: 10.1227/neu.0000000000002144. Epub 2022 Sep 28.

    PubMed 36170165
  • Dudoit T, Labeyrie PE, Deryckere S, Emery E, Gaberel T. Is systematic post-operative CT scan indicated after chronic subdural hematoma surgery? A case-control study. Acta Neurochir (Wien). 2016 Jul;158(7):1241-6. doi: 10.1007/s00701-016-2820-6. Epub 2016 May 5.

    PubMed 27147520
  • Chen FM, Wang K, Xu KL, Wang L, Zhan TX, Cheng F, Wang H, Chen ZB, Gao L, Yang XF. Predictors of acute intracranial hemorrhage and recurrence of chronic subdural hematoma following burr hole drainage. BMC Neurol. 2020 Mar 13;20(1):92. doi: 10.1186/s12883-020-01669-5.

    PubMed 32169039
  • Thomas PAW, Mitchell PS, Marshman LAG. Early Postoperative Morbidity After Chronic Subdural Hematoma: Predictive Usefulness of the Physiological and Operative Severity Score for Enumeration of Mortality and Morbidity, American College of Surgeons National Surgical Quality Improvement Program, and American Society of Anesthesiologists Grade in a Prospective Cohort. World Neurosurg. 2019 Apr;124:e489-e497. doi: 10.1016/j.wneu.2018.12.119. Epub 2019 Jan 3.

    PubMed 30610985
  • Kolias AG, Chari A, Santarius T, Hutchinson PJ. Chronic subdural haematoma: modern management and emerging therapies. Nat Rev Neurol. 2014 Oct;10(10):570-8. doi: 10.1038/nrneurol.2014.163. Epub 2014 Sep 16.

    PubMed 25224156
  • Santarius T, Kirkpatrick PJ, Ganesan D, Chia HL, Jalloh I, Smielewski P, Richards HK, Marcus H, Parker RA, Price SJ, Kirollos RW, Pickard JD, Hutchinson PJ. Use of drains versus no drains after burr-hole evacuation of chronic subdural haematoma: a randomised controlled trial. Lancet. 2009 Sep 26;374(9695):1067-73. doi: 10.1016/S0140-6736(09)61115-6.

    PubMed 19782872
  • Nouri A, Gondar R, Schaller K, Meling T. Chronic Subdural Hematoma (cSDH): A review of the current state of the art. Brain Spine. 2021 Nov 2;1:100300. doi: 10.1016/j.bas.2021.100300. eCollection 2021.

    PubMed 36247395
  • Desir LL, Narayan V, Ellis J, Gordon D, Langer D, Ortiz R, Serulle Y. Middle Meningeal Artery Embolization in the Management of Chronic Subdural Hematoma: a Comprehensive Review of Current Literature. Curr Neurol Neurosci Rep. 2023 Apr;23(4):109-119. doi: 10.1007/s11910-023-01262-6. Epub 2023 Apr 11.

    PubMed 37037979
  • Miah IP, Tank Y, Rosendaal FR, Peul WC, Dammers R, Lingsma HF, den Hertog HM, Jellema K, van der Gaag NA; Dutch Chronic Subdural Hematoma Research Group. Radiological prognostic factors of chronic subdural hematoma recurrence: a systematic review and meta-analysis. Neuroradiology. 2021 Jan;63(1):27-40. doi: 10.1007/s00234-020-02558-x. Epub 2020 Oct 22.

    PubMed 33094383
  • Rauhala M, Helen P, Huhtala H, Heikkila P, Iverson GL, Niskakangas T, Ohman J, Luoto TM. Chronic subdural hematoma-incidence, complications, and financial impact. Acta Neurochir (Wien). 2020 Sep;162(9):2033-2043. doi: 10.1007/s00701-020-04398-3. Epub 2020 Jun 10.

    PubMed 32524244
  • Almenawer SA, Farrokhyar F, Hong C, Alhazzani W, Manoranjan B, Yarascavitch B, Arjmand P, Baronia B, Reddy K, Murty N, Singh S. Chronic subdural hematoma management: a systematic review and meta-analysis of 34,829 patients. Ann Surg. 2014 Mar;259(3):449-57. doi: 10.1097/SLA.0000000000000255.

    PubMed 24096761

Questions about this trial

What is this clinical trial studying?

A study testing Embolization of the middle meningeal artery and Surgical Evacuation via burr hole or craniotomy in people with Chronic Subdural Hematoma, run by Juan M. Ramos Acevedo.

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 8 inclusion and 15 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: opening soon, as of the sponsor's last update on 7 May 2025. 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?

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?

Contact Maria M Garcia Perez (939-417-4432, dra.garcia.neurosx@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Reoperation (time frame: 3 months, 6 months, and 12 months). 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 NCT06466733, which also lists 34 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 7 May 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in