STOP AF First: Cryoballoon Catheter Ablation in an Antiarrhythmic Drug Naive Paroxysmal Atrial Fibrillation (STOP AF First)
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ClinicalTrials.gov Identifier: NCT03118518 |
Recruitment Status :
Completed
First Posted : April 18, 2017
Last Update Posted : August 27, 2020
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Atrial Fibrillation Atrial Fibrillation New Onset | Device: Cryoablation Drug: Antiarrhythmic drug | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 210 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | STOP AF First: Cryoballoon Catheter Ablation in an Antiarrhythmic Drug Naive Paroxysmal Atrial Fibrillation |
Actual Study Start Date : | June 16, 2017 |
Actual Primary Completion Date : | June 25, 2020 |
Actual Study Completion Date : | June 25, 2020 |

Arm | Intervention/treatment |
---|---|
Active Comparator: Anti-arrhythmic drug |
Drug: Antiarrhythmic drug
Antiarrhythmic drug initiation |
Experimental: Cryoablation |
Device: Cryoablation
Pulmonary vein isolation via ablation with cryoballoon catheter
Other Name: ArcticFront Advance Cardiac CryoAblation Catheter |
- Primary efficacy endpoint - Treatment success at 12 months after antiarrhythmic drug (AAD) initiation or ablation utilizing the Arctic Front Advance™ Cardiac CryoAblation Catheter. [ Time Frame: Randomization to 12 months ]Measured by success or failure.
- Primary safety endpoint - Rate of composite list of serious adverse events. [ Time Frame: Randomization to 12 months ]Measured by rate of composite list of serious adverse events.

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Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Gender Based Eligibility: | Yes |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- A diagnosis of symptomatic paroxysmal AF with the following documentation: (1) physician's note indicating recurrent self- terminating AF or paroxysmal AF; and (2) any ECG documented AF within 6 months prior to enrollment.
- Age 18-80
Exclusion Criteria:
- History of AF treatment with class I or III antiarrhythmic drug, including sotalol, with the intention to prevent an AF recurrence. However, patients pretreated with above AAD for less than 7 days with the intention to convert an AF episode are allowed.
- Prior persistent AF (cardioversion after 48 hours or continuous AF that is sustained >7 days)
- Left atrial diameter greater than 5.0 cm
- Prior left atrial ablation or left atrial surgical procedure
- Presence or likely implant of a permanent pacemaker, biventricular pacemaker, loop recorder, or any type of implantable cardiac defibrillator (with or without biventricular pacing function)
- Body mass index (BMI) >35 kg/m2
- Presence of any pulmonary vein stents
- Known presence of any pre-existing pulmonary vein stenosis
- Pre-existing hemidiaphragmatic paralysis
- Presence of any cardiac valve prosthesis
- Moderate or severe mitral valve regurgitation or stenosis
- Any cardiac surgery, myocardial infarction, percutaneous coronary intervention/ percutaneous transluminal coronary angioplasty or coronary artery stenting which occurred during the 90 day interval preceding the date the subject signed the Informed Consent Form
- Unstable angina
- New York Heart Association (NYHA) class III or IV congestive heart failure and/or known left ventricular ejection fraction (LVEF) less than 45%
- Diagnosis of primary pulmonary hypertension
- Rheumatic heart disease
- Thrombocytosis, thrombocytopenia
- Contraindication to anticoagulation therapy
- Active systemic infection
- Hypertrophic cardiomyopathy
- Cryoglobulinemia
- Known reversible causes of AF, including but not limited to uncontrolled hyperthyroidism, obstructive sleep apnea, and acute alcohol toxicity.
- Any cerebral ischemic event (strokes or transient ischemic attacks) which occurred during the 180 day interval preceding the date the subject signed the Informed Consent Form, or any known unresolved complications from previous stroke/transient ischemic attack
- Existing thrombus
- Pregnancy
- Patient with life expectancy that makes it unlikely 12 months of follow-up will be completed.
- Current or anticipated participation in any other clinical trial of a drug, device or biologic during the duration of this study not pre-approved by Medtronic
- Patients with contraindications to a Holter monitor
- Unwilling or unable to comply fully with study procedures and follow-up

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03118518

Principal Investigator: | Oussama Wazni, MD | The Cleveland Clinic | |
Principal Investigator: | Gopi Dandamudi, MD | Franciscan Heart & Vascular Associates at St. Joseph | |
Principal Investigator: | Steve Nissen, MD | The Cleveland Clinic |
Responsible Party: | Medtronic Cardiac Rhythm and Heart Failure |
ClinicalTrials.gov Identifier: | NCT03118518 |
Other Study ID Numbers: |
MDT16012AFS001 |
First Posted: | April 18, 2017 Key Record Dates |
Last Update Posted: | August 27, 2020 |
Last Verified: | August 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Atrial Fibrillation Arrhythmias, Cardiac Heart Diseases |
Cardiovascular Diseases Pathologic Processes Anti-Arrhythmia Agents |