Catheter Ablation of Arrhythmias to Improve CRT Response

Catheter Ablation of Arrhythmias to Improve CRT Response

The purpose of this study is to test if catheter ablation is better than medication therapy at treating arrhythmias originating from the upper and/or lower chambers of the heart in order to allow the heart to beat properly.

Inclusion Criteria:

• Heart failure patients with CRT-D or CRT-P greater than 3 months
• Bi-ventricular pacing less than 94% of the time
• 3 months after CRT-D or CRT-P implantation an EF improvement less than 5%
• Presence of one of the following arrhythmias and eligible for catheter ablation:
• Atrial fibrillation
• Atrial flutter
• Supraventricular tachycardia
• Premature ventricular contraction burden greater than 30% in a 24-hour period
• Ventricular tachycardia

Exclusion Criteria:

• Estimated survival less than one year
• Patient unable to make scheduled follow up visits at treating center
• Participating in another investigational study