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Recruiting NCT03546374

NCT03546374 Medtronic Terminate AF Study

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Clinical Trial Summary
NCT ID NCT03546374
Status Recruiting
Phase
Sponsor Medtronic Cardiac Surgery
Condition Persistent Atrial Fibrillation
Study Type INTERVENTIONAL
Enrollment 160 participants
Start Date 2018-11-15
Primary Completion 2024-10-01

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
Surgical AblationCardioblate and Cryoflex hand held devices

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

This trial targets 160 participants in total. It began in 2018-11-15 with a primary completion date of 2024-10-01.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The purpose of this study is to demonstrate the safety and effectiveness of the Cardioblate iRF and CryoFlex hand held devices for the treatment of non-paroxysmal atrial fibrillation (AF).

Eligibility Criteria

Inclusion Criteria: * History of non-paroxysmal AF (persistent or longstanding persistent) * Concomitant indication for non-emergent open-heart surgery, eg, 1. Coronary artery bypass grafting 2. Valve repair or replacement * Able to take the anticoagulant warfarin or novel oral anticoagulants (NOAC) Exclusion Criteria: * Wolff-Parkinson-White syndrome * New York Heart Association (NYHA) Class = IV * Left Ventricular Ejection Fraction ≤ 30% * Need for emergent cardiac surgery (ie, cardiogenic shock) or redo open heart surgery * Previous AF ablation, atrioventricular (AV) -nodal ablation, or surgical Maze procedure * Contraindication for anticoagulation therapy * Left atrial diameter \> 6.0 cm * Preoperative need for an intra-aortic balloon pump or intravenous inotropes * Renal failure requiring dialysis or hepatic failure * Life expectancy of less than 1 year * Predicted risk of operative mortality \>10% as assessed by STS Risk Calculator * Pregnancy or desire to be pregnant within 12 months of the study treatment * Current diagnosis of active systemic infection * Active endocarditis * Documented MI 30 days prior to study enrollment * Current or planned participation in an investigational or observational drug or device trial related to the treatment of atrial arrhythmias

Contact & Investigator

Central Contact

Stephanie Yong

✉ stephanie.yong@medtronic.com

📞 763-526-2032

Principal Investigator

Ralph J Damiano, MD

PRINCIPAL INVESTIGATOR

Washington University School of Medicine

Frequently Asked Questions

Who can join the NCT03546374 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Persistent Atrial Fibrillation. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT03546374 currently recruiting?

Yes, NCT03546374 is actively recruiting participants. Contact the research team at stephanie.yong@medtronic.com for enrollment information.

Where is the NCT03546374 trial being conducted?

This trial is being conducted at Palo Alto, United States, St. Helena, United States, Hartford, United States, Indianapolis, United States and 11 additional locations.

Who is sponsoring the NCT03546374 clinical trial?

NCT03546374 is sponsored by Medtronic Cardiac Surgery. The principal investigator is Ralph J Damiano, MD at Washington University School of Medicine. The trial plans to enroll 160 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology