Modified Ablation Guided by Ibutilide Use in Chronic Atrial Fibrillation

Exclusion Criteria

• •Any reversible cause of AF (post-surgery, thyroid disorder, etc.)
• •Patients with a myocardial infarction or unstable angina in the previous 2 months.
• •Patients with a history of rheumatic heart disease
• •Patients with congenital heart disease
• •Patients with a history of hypertrophic cardiomyopathy
• •Patients with LV ejection fraction \< 35%
• •Class IV congestive heart failure
• •Patients who have experienced any cerebral ischemic event, including any TIA in the preceding 1 month.
• •Women who are known to be pregnant or have had a positive β-HCG test 7 days prior to procedure.
• •Patients with any other significant uncontrolled or unstable medical condition (including uncontrolled clinically significant coagulation disorders).
• •Patients whose life expectancy is less than one year.
• •History of malignant ventricular arrhythmias or long QT interval (\>500msec)
• •Prior left-sided cardiac ablation procedure (catheter based or surgical)
• •Mental impairment precluding the patient from providing informed consent or completing the appropriate follow up