Endovascular reopening of chronically blocked intracranial arteries

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study collects consecutive patients who underwent endovascular recanalization for symptomatic chronic intradural large-vessel occlusions at participating centers between January 1, 2020 and December 31, 2024. The team will record technical success, perioperative complication rates, and clinical outcomes such as functional status and stroke recurrence. Cases include intradural internal carotid, middle cerebral, vertebral, and basilar artery occlusions and focus on procedural feasibility in these technically challenging locations. Procedural details and adverse events will be characterized to inform safety and guide future treatment strategies.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* all consecutive patients who undergone endovascular recanalization for chronic intradural large vessel occlusions between January 1st, 2020, and December 31st, 2024 involving the following locations: internal carotid artery (ICA), middle cerebral artery (MCA), vertebral artery (VA), and basilar artery (BA)

Exclusion Criteria:

* presence of documented written or verbal refusal

Where it's running

• Alfried Krupp Krankenhaus
  Essen, Germany Recruiting
• Inselspital Bern, University Hospital Bern
  Bern, Switzerland Recruiting

Study contacts

• Study coordinator: Petra Cimflova, MD, PhD
• Email: petra.cimflova@insel.ch
• Phone: +41316640831

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.