Prospective, Multicenter, Un-Blinded, Single Arm, Clinical Study Using the Guidant Microwave Ablation System Comprised of the Flex 10 Ablation Probe and Microwave Generator for Patients With Symptomatic Paroxysmal Atrial Fibrillation
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Atrial Fibrillation
- Sponsor
- Maquet Cardiovascular
- Status
- Terminated
- Last Updated
- 16 years ago
Overview
Brief Summary
The purpose of this prospective, single-arm, un-blinded, multi-site clinical study is to assess the safety and efficacy of the Microwave Ablation System for the treatment of symptomatic paroxysmal atrial fibrillation (PAF) in the minimally invasive surgical (MIS) procedure in approximately 30 patients at 6 investigational sites in the United States.
Detailed Description
The study population for this study will be comprised of patients who have been diagnosed with symptomatic (PAF) for at least 6 months prior to study entry. Patients will be qualified for the study if they meet stringent inclusion/exclusion criteria, signing an informed consent and agreeing to return for followup visits at 1, 3, 6, 9 and 12 months. All study patients will receive microwave ablation to treat their symptomatic PAF. The Microwave Ablation System will be used during a MIS procedure on a beating heart in order to ablate a specified lesion pattern.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Patient is greater than or = 18 years of age
- •Patient has documented symptomatic paroxysmal atrial fibrillation (PAF) refractory to at least 1 antiarrhythmic (Class IA, IC, III) drug.
- •Patient has episodes of symptomatic AF including, but not limited to, palpitations, lightheadedness, fatigue, dyspnea, and/or chest pain.
- •A minimum of a 6-month history of symptomatic paroxysmal AF (documented by patient report in the medical record).
- •A minimum of 2 discrete symptomatic paroxysmal AF episodes in the month prior to study entry. Paroxysmal AF rhythm must be documented by objective evidence (12-lead electrocardiogram \[ECG\], Holter monitor, event monitor, or other telemetry rhythm strip) with the presence of sinus rhythm and/or underlying rhythm between episodes.
- •Patient has been informed of the nature of the study, agreed to its provisions, and provided written informed consent.
Exclusion Criteria
- •Patient had a cerebral vascular accident or transient ischemic attack within the previous 6 months.
- •Patient had a myocardial infarction within the previous 6 weeks.
- •Patient has underlying metabolic etiology related to AF (e.g., hyperthyroidism, metabolic disorder).
- •Patient has significant underlying structural heart disease (e.g., valvular disease, presence of aneurysm, left ventricular hypertrophy) requiring surgical or procedural intervention.
- •Patient with prior catheter ablation procedure for the treatment of AF within the previous 6 months.
- •Patient has evidence of, or history of, 50% or more stenosis in any pulmonary vein.
- •Patient had a previous thoracic procedure resulting in sternal opening and/or pericardial opening (e.g., surgical ablation, coronary artery bypass graft \[CABG\], or valve repair).
- •Patient has a left atrial size \> 6.0 cm measured on echocardiogram.
- •Patient has a left ventricular ejection fraction (LVEF) \< 35%.
- •Patient requires treatment for CAD (coronary artery disease) or has untreated unstable angina.
Outcomes
Primary Outcomes
Not specified