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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

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1 of 636 participants interested
0% interest

See if this study fits

A short prescreen based on this study's listed criteria. A coordinator confirms eligibility — this is not a medical assessment.

Preparing your pre-screening questions…

Study locations

Choose your preferred location, or select flexible during enrollment.

WITHDRAWN

Tucson

Arizona

Location available
RECRUITING

La Jolla

California

Location available
RECRUITING

Loma Linda

California

Location available
RECRUITING

San Francisco

California

Location available
RECRUITING

Santa Barbara

California

Location available
RECRUITING

Littleton

Colorado

Location available
RECRUITING

Loveland

Colorado

Location available
RECRUITING

New Haven

Connecticut

Location available
RECRUITING

Jacksonville

Florida

Location available

And 36 more locations available.

Express your interest

Share your contact details and a study coordinator can follow up about screening.

Secure & Confidential

Your information is protected and will only be shared with the research team.

What participation can include

  • Study-related care provided by the research team
  • Close monitoring by medical professionals
  • Possible compensation for time and travel*
  • The option to withdraw at any time
  • Contributing to medical research that may help future patients

*Compensation varies by study. Confirm details with coordinator.

Typical next steps

  1. 1.Submit this form
  2. 2.Phone screening
  3. 3.In-person assessment if eligible
  4. 4.Begin participation

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Looking for Stroke Treatment in Tucson?

Join others in Arizona exploring innovative treatment options through clinical research

Stroke Treatment Options in Tucson, Arizona

If you're searching for Stroke treatment in Tucson, participating in a clinical research study may provide access to innovative approaches under expert medical supervision. This study is actively recruiting participants in Tucson, La Jolla, Loma Linda and surrounding areas.

Clinical trials offer participants the opportunity to receive cutting-edge treatments while contributing to medical research that may help future patients with Stroke. All study-related care is provided at no cost to participants.

Local Sites
3 locations in Arizona
Now Enrolling
Up to 636 participants
Quick Start
Screening available now

Why Consider a Clinical Trial for Stroke?

Potential Benefits

  • Access to new treatment approaches before public availability
  • Close monitoring by experienced medical professionals
  • Study-related care provided at no cost
  • Contribute to medical research for Stroke

What to Expect

  • Initial screening to determine eligibility
  • Regular check-ups and monitoring visits
  • Possible compensation for time and travel
  • You can withdraw at any time

Frequently Asked Questions About This Stroke Study

Important Clinical Trial Information

This information is provided for educational purposes and does not constitute medical advice. Clinical trial participation involves potential risks and benefits. Eligibility requirements apply and will be assessed during the screening process.

Study identifier: NCT03821129. For complete study details, visit ClinicalTrials.gov. Always consult with your healthcare provider before making decisions about your medical care or participating in clinical research.