Embolization of the middle meningeal artery for treating chronic subdural hematomas

Middle Meningeal Artery (MMA) Embolization for cSDH: Rationale and Design for the STOp Recurrence of MMA Bleeding (STORMM) Randomized-Control Trial

Not applicable Interventional University Hospital, Geneva · NCT06163547

This study is testing if blocking a specific artery can help people with chronic subdural hematomas either when combined with surgery or as a standalone treatment for those who can’t have surgery.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment180 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorUniversity Hospital, Geneva Academic / other
Drugs / interventionsradiation
Locations2 sites (Geneva and 1 other locations)
Trial IDNCT06163547 on ClinicalTrials.gov

What this trial studies

This study investigates the efficacy of middle meningeal artery (MMA) embolization in patients with chronic subdural hematomas (cSDH). It aims to evaluate the recurrence rates of cSDH after combined surgical and MMA embolization treatments compared to surgery alone. Additionally, the study assesses the effectiveness of MMA embolization as a standalone treatment for patients who cannot undergo surgery. The research involves a multicenter randomized control trial to provide higher-level evidence regarding the safety and efficacy of this intervention.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18-100 with symptomatic chronic subdural hematomas located at the convexities.

Not a fit: Patients who may not benefit include those who cannot provide consent, are pregnant, or have contraindications for angiography.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the recurrence rates of chronic subdural hematomas, potentially improving patient outcomes and reducing the need for additional surgeries.

How similar studies have performed: While there is limited evidence supporting the efficacy of MMA embolization, previous case series suggest lower recurrence rates, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age: 18-100
* Consent possible
* cSDH located at the convexities
* Patients with symptomatic cSDH
* Patients with asymptomatic large chronic/subacute hematoma after 6 weeks of failed conservative treatment

Exclusion Criteria:

* Consent not possible
* Pregnancy
* Prisoner
* Angiography contraindication
* Patient for whom follow-up is problematic (e.g. distant residency, homeless …)
* Previous surgery for cSDH

Where this trial is running

Geneva and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Chronic Subdural HematomasCerebral Compression Due to Injury
Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.