🏛️ Verified NIH Record • Updated 2026-04-14

Rescue Distal Thrombectomy in Treatment for Persistent Distal Occlusions (NCT07533253)

Treatment of Persistent Distal Occlusion After Successful Proximal Recanalization in Thrombectomy - A PHASE II Trial

🟡 Not Yet Recruiting Observational / Diagnostic 🩺 Clinical Procedure Protocol Sponsor: Centre hospitalier de l'Université de Montréal (CHUM)

🩺 Plain-English Summary (8th-Grade Level)

The goal of this clinical trial is to determine whether rescue distal mechanical thrombectomy can improve outcomes in patients with persistent distal occlusions after successful proximal mechanical thrombectomy for acute ischemic stroke. Many patients with acute ischemic stroke caused by large vessel occlusion undergo emergency treatment with proximal mechanical thrombectomy, which removes the main clot and restores flow in a large artery. However, in some patients, one or more smaller distal arteries remain occluded after successful proximal recanalization. It is not yet known whether treating these persistent distal occlusions improves angiographic or clinical outcomes. This study will compare two approaches: Rescue distal mechanical thrombectomy: an additional distal mechanical thrombectomy procedure is performed during the same endovascular session. Conservative management: no additional distal endovascular intervention is performed after successful proximal mechanical thrombectomy. The main questions the study aims to answer are: * Is rescue distal mechanical thrombectomy feasible in this setting? * Is it safe? * Does it improve angiographic and clinical outcomes? Participants will be randomly assigned during the index endovascular procedure to one of the two study groups and will be followed with imaging and clinical assessments during hospitalization and at 90 days. Approximately 72 participants will take part in this study at the Centre hospitalier de l'Université de Montréal (CHUM).

Who can join: Review the eligibility criteria below.

Location: Centre hospitalier de l'Université de Montréal (CHUM) — Montreal, Quebec

Age range: 18 Years

🧪 Interventions in This Study

  • Proximal mechanical thrombectomy (PROCEDURE)
  • Rescue distal mechanical thrombectomy (PROCEDURE)
  • Conservative management (OTHER)

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (1 Sites)

  • Centre hospitalier de l'Université de Montréal (CHUM) — Montreal, Quebec

📞 Contact the Study Coordinator

Phone: (514) 890-8000

Email: neuroradiologie.recherche.chum@ssss.gouv.qc.ca

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗