NCT03821129 · W.L.Gore & Associates
GORE® CARDIOFORM Septal Occluder and Antiplatelet Medical Management for Reduction of Recurrent Stroke in Patients With Patent Foramen Ovale (PFO): the REDUCE Post Approval Study
(REDUCE PAS)
What this study is about
This study will assess the safety and effectiveness of GORE® CARDIOFORM Septal Occluder in a post approval setting and evaluate the quality of operator education and training and transferability of trial experience to a post-market setting.
View original scientific description
This study will assess the safety and effectiveness of GORE® CARDIOFORM Septal Occluder in a post approval setting and evaluate the quality of operator education and training and transferability of trial experience to a post-market setting.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Diagnosed with an ischemic stroke presumed to be an embolic stroke of undetermined source (ESUS) verified by a neurologist within the last 365 days prior to enrollment.
- Presence of Patent Foramen Ovale (PFO), as determined initially by positive bubble study utilizing transesophageal echocardiography (TEE) and/or transcranial Doppler (TCD), demonstrating spontaneous right-to-left shunting or right-to-left shunting during Valsalva maneuver.
- Patient is able to tolerate antiplatelet therapy
- Note: Additional Inclusion Criteria may apply
Exclusion criteria
- History of or ongoing atrial fibrillation/flutter
- Other co-morbidities including, but not limited to, mural thrombus, dilated cardiomyopathy, cardiac prosthetics (valves), severe native valve disease (including mitral valve stenosis), severe ventricular wall motion abnormalities, aortic dissection, significant atherosclerosis, vasculitis, pre-existing non-vascular neurologic disorders, pulmonary arteriovenous malformations, prior intracranial hemorrhage, severe disability related to prior stroke, autoimmune disorders that would increase the risk of stroke or thromboembolism, or associated with increased risk of infection or procedural complications, in the opinion of the investigator, left ventricular ejection fraction of \<40%, coexistent cause or intra-cardiac shunting (e.g. VSD or ASD)
- Previous Myocardial Infarction
- Rankin Scale sore greater than or equal to 3 at the time of procedure
- Active infection that cannot be treated successfully prior to enrollment
- Neurological deficits not due to stroke that may affect the patient's neurologic assessments
- Evidence of hypercoagulable state, Uncontrolled diabetes mellitus, uncontrolled systemic hypertension or pulmonary hypertension at the time of screening or procedure
- Sensitivity or contraindication to all proposed medical treatments or any device components
- Pregnant, lactating, or intent on becoming pregnant through 24 months after enrollment.
- Indications outside the parameters accepted for placement of GSO, including extensive congenital cardiac anomalies and defect diameters considered too large for closure with the device.
- Atrial septal anatomy that is expected to necessitate placement of more than one GORE® CARDIOFORM Septal Occluder
- Need for concomitant procedure(s) that may confound detection of adverse events related to device placement
- Note: Additional Exclusion Criteria may apply
Where
- Tucson, Arizona
- La Jolla, California
- Loma Linda, California
- San Francisco, California
- Santa Barbara, California
- Littleton, Colorado
- Loveland, Colorado
- New Haven, Connecticut
- Jacksonville, Florida
- Naples, Florida
- Tampa, Florida
- Weston, Florida
And 30 more locations — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 5, 2026 · Source of record for eligibility and locations