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Clinical Trial ● Currently Recruiting Non-phase study NCT05963698

The Fourth Left Atrial Appendage Occlusion Study

The Fourth Left Atrial Appendage Occlusion Study — Recruiting • Non-phase study • Cardiology / Cardiovascular • NCT05963698.

📅 25 Mar 2026 ⏱ 2 min read
Currently Recruiting
This trial is actively seeking participants in the UK. Discuss eligibility with your patient before referring.
Status
Currently Recruiting
Phase
Non-phase study
NCT ID
NCT05963698
Sponsor
Hamilton Health Sciences Corporation
Start
2023-11-30
ClinicaliQ Trial Snapshot
  • The Fourth Left Atrial Appendage Occlusion Study — Recruiting • Non-phase study • Cardiology / Cardiovascular • NCT05963698.
  • LAAOS-4 aims to determine if catheter-based endovascular left atrial appendage occlusion prevents ischemic stroke or systemic embolism in participants with atrial fibrillation, who remain at high risk of stroke, despite receiving ongoing treatment with oral anticoagulation.
  • Sponsor: Hamilton Health Sciences Corporation.

Verify eligibility, endpoints and current status on the original source registry before acting on this summary.

Use This Page For
  • Quick orientation before opening the registry record.
  • Checking recruitment status, phase and sponsor at a glance.
  • Connecting this trial to nearby guidelines, Drug Science and education.
What This Trial Is Studying

LAAOS-4 aims to determine if catheter-based endovascular left atrial appendage occlusion prevents ischemic stroke or systemic embolism in participants with atrial fibrillation, who remain at high risk of stroke, despite receiving ongoing treatment with oral anticoagulation.

Eligibility Snapshot
  • : 1. (a) Persistent or permanent atrial fibrillation OR (b) Paroxysmal atrial fibrillation in participants with a history of ischemic stroke or systemic embolism 2. Increased risk of stroke, defined as a CHA2DS2-VASc stroke risk score of ≥ 4. [Note: the acronym CHA2DS2-VASc stands for congestive heart failure, hypertension, age ≥75 (doubled), diabetes, stroke (doubled), vascular disease, age 65 to 74 and sex category (female).] 3. Treatment with oral anticoagulants (Vitamin K agonist or factor Xa inhibitor) for at least 90 days prior to enrollment, AND no documented plan to discontinue treatment with oral anticoagulants for the expected duration of the trial.

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.

Full Trial Details
View this trial on the source registry
Eligibility criteria, protocol, and results when available
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