Atrial Fibrillation
Conditions
Brief summary
A prospective, non-randomized, multi-center clinical trial. The patient population includes patients with permanent or persistent AF requiring valve replacements or repairs, ASD repairs, PFO closure or coronary artery bypass grafts (CABG) procedures. Patients are not allowed to have had previous atrial ablation, AV-nodal ablation, or surgical Maze procedure.
Detailed description
The Cardioblate Surgical Ablation System is cleared in Canada and Europe for ablation of cardiac tissue for the treatment of cardiac arrhythmias. In the United States, the Cardioblate bipolar is approved for soft tissue ablation, while the Cardioblate Pen is approved for cardiac tissue ablation. The purpose of the clinical study is to obtain a labeling claim for the US market that the Cardioblate Surgical Ablation System can be used for ablation of cardiac tissue in the treatment of cardiac arrhythmias such as atrial fibrillation among permanent and persistent AF patients.
Interventions
This investigation is a prospective, non-randomized multicenter clinical trial evaluating the outcome of patients with AF requiring concomitant open heart surgery plus the Cardioblate Surgical Ablation System using the modified Maze III procedure. The trial population includes patients requiring valve replacements or repairs, atrial septal defect (ASD) repairs, patent foramen ovale (PFO) closure or coronary artery bypass grafts (CABG) procedures.
PROCEDURESurgical RF Ablation
This investigation is a prospective, nonrandomized multicenter clinical trial evaluating the outcome of patients with AF requiring concomitant open heart surgery plus the Cardioblate Surgical Ablation System using the modified Maze III procedure. The trial population includes patients requiring valve replacements or repairs, atrial septal defect (ASD) repairs, patent foramen ovale (PFO) closure or coronary artery bypass grafts (CABG) procedures.
Sponsors
Medtronic Cardiovascular
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients must meet all of the following criteria to be enrolled in the study: 1. Documented history of AF a For inclusion in permanent AF arm: Patients must have a documented history of permanent AF (cardioversion failure) as defined by the ACC/AHA/ESC Guidelines; Documentation of AF must include one or more chart references to AF and/or one or more ECG's with AF prior to the patient's surgery. Other supporting information could include references to cardioversion attempts using either drugs or electrical shock. b For inclusion in persistent AF arm: Patients must have a documented history of persistent AF as defined by the ACC/AHA/ESC Guidelines: characterized as episodes of non-self-terminating atrial fibrillation that usually lasts more than 7 days 2. Concomitant indication (other than AF) for open-heart surgery for one or more of the following: a Mitral valve repair or replacement, b Aortic valve repair or replacement, c Tricuspid valve repair or replacement, d ASD repair, e PFO closure, or f CABG procedures; 3 Able to take the anticoagulant warfarin or other ACC/AHA/ESC-recommended anticoagulant medication; 4 Greater than or equal to 18 years of age; 5 Able and willing to comply with study requirements by signing a Patient Informed Consent form.
Exclusion criteria
* Patients who meet any of the following criteria may not be enrolled in the study: 1 Wolff-Parkinson-White syndrome, 2 NYHA functional class = IV, 3 Left ventricular ejection fraction ≤ 30%, 4 Left atrial diameter \> 7.0 cm, 5. Need for emergent cardiac surgery (i.e. cardiogenic shock) or redo open heart surgery, 6 Preoperative need for an intra-aortic balloon pump or intravenous inotropes, 7 Previous atrial ablation, AV-nodal ablation, or surgical Maze procedure, 8 Contraindication for anticoagulation therapy, 9 Current diagnosis of active systemic infection, 10 Renal failure requiring dialysis or hepatic failure, 11 Documented myocardial infarction 6 weeks prior to study enrollment, 12 Life expectancy of less than one year, or 13 Pregnancy or desire to be pregnant within 12-months of the study treatment.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Permanent AF Arm | 24-hour Holter recording at 6 months follow-up | Primary efficacy endpoint- The percent of patients free of AF, off Class I or III antiarrhythmic drugs and not having received additional ablation therapy, as determined by a 24-hour Holter recording at 6 months follow-up. |
| Persistent AF Arm | 24-hour Holter recording at 9 months follow-up. | The percent of patients free of AF, off Class I or III antiarrhythmic drugs and not having received additional ablation therapy, as determined by a 24-hour Holter recording at 9 months follow-up. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Permanent AF Arm | 24 hours | Secondary efficacy endpoints - 24-hour Holter recording, b) improvement in left ventricular ejection fraction and c) left atrial transport function as evidenced by the presence of an A wave at 6 months follow-up. |
| Persistent AF Arm | 24-hour Holter recording at 9 months follow-up. | Secondary efficacy endpoints - a) The percent of patients free of AF, regardless of Class I or III antiarrhythmic drug use and not having received additional ablation therapy, as determined by a 24-hour Holter recording, b) improvement in left ventricular ejection fraction and c) left atrial transport function as evidenced by the presence of an A wave at 9 months follow-up. |
Countries
Germany, Norway, Poland
Outcome results
None listed