Radio Frequency Ablation for Atrial Flutter With Magnetic Resonance Guidance and Tracking

University of Leipzig

Status

Terminated

Conditions

Atrial Flutter

Treatments

Device: Vision Ablation Catheter

Procedure: ablation for typical atrial flutter

Study type

Interventional

Funder types

Other

Industry

Identifiers

NCT02380937

104/14-ff

Details and patient eligibility

About

The Radio Frequency Ablation for Atrial Flutter with Magnetic Resonance Guidance and Tracking Pilot Study (hereafter referred to as "pilot study") is a prospective, non- randomized, single-center, pilot study. The purpose of this clinical study is to evaluate the safety and performance of the Imricor Medical Systems, Inc. (Imricor) Vision Ablation Catheter when used with related accessories for the treatment of type I atrial flutter. The Vision Ablation Catheter and its accessories have been designed for use under fluoroscopic or magnetic resonance guidance.

Full description

An objective of the study is to perform the entire ablation procedure from subject preparation through confirmation of bidirectional conduction block entirely under magnetic resonance guidance. However, at the investigator's discretion, the preparation of the subject may occur in a conventional electrophysiology laboratory followed by transferring the patient to the magnetic resonance suite for the ablation procedure. Additionally, if bidirectional conduction block is not achieved within 90 minutes from the initial catheter placement, the subject may be transferred from the magnetic resonance suite to a conventional electrophysiology lab to complete the procedure. Clinical success is bidirectional conduction block regardless of the environment within which the ablation occurs.

The study will be conducted at a single center, Herzzentrum Leipzig University Hospital, in Germany, and a maximum of 30 subjects meeting inclusion/exclusion criteria will participate in the study. This study requires the use of investigational products from two independent manufacturers: Imricor and Philips. Imricor has developed the ablation catheter with related accessories, introducers, and recording system. Philips has developed an image guidance and mapping system that is compatible with the Imricor products. The Vision Ablation Catheter will be used in conjunction with the following investigational products: Vision Ablation Catheter Cable Set (accessory sterile cable), Vision Hemostasis Introducer, Vision Dual-Deflect Sheath, Horizon recording system, and the interventional MRI Suite (iSuite) image guidance and mapping system. With the exception of iSuite, which is manufactured by Philips, Imricor will provide all investigational devices used in the study. Each procedure will utilize the following two single-use products: two Vision Ablation Catheters and an accessory Catheter Cable set. At the discretion of the investigator, Vision Hemostasis Introducers may be used for femoral access and a Vision Dual- Deflect Sheath and may be used in conjunction with the Vision Ablation Catheter Cable Set. Ablation for the treatment of arrhythmia is an inherently complex procedure. Use of the investigational products listed above under magnetic resonance guidance is a new approach to performing the interventional electrophysiology procedure. The study population will consist of adult patients requiring ablation for type I atrial flutter.

Study subjects will require a follow-up visit or telephone call at 7 days post procedure.

Accordingly, the expected total study duration is approximately six months with study start planned for October 2014.

Enrollment

8 patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

First time indication for type I atrial flutter ablation
Age 18 or above
Patients willing and able (mentally and physically capable per physician's discretion) to understand the investigational nature, potential risks and benefits of the study and able to provide written informed consent to participate in the study and agree to comply with follow-up visits and evaluation
Patients able to receive anticoagulation therapy to achieve adequate anticoagulation

Exclusion criteria

Contraindication for MRI diagnostic exam
A cardiac ablation or cardiac surgery within 90 days prior to enrollment
Documented intracardiac thrombus, tumor, bleeding, clotting or other abnormality that precludes catheter introduction and placement
Myocardial infarction within 60 days prior to enrollment
Current unstable angina
History of cerebrovascular event (within 180 days prior to enrollment)
Patients with an ejection fraction less than or equal to 30% within 90 day prior to enrollment
Permanent leads in or through the right atrium
Clinically significant structural heart disease (including tricuspid valve regurgitation, tricuspid valve stenosis or other congenital heart disease) that would preclude catheter introduction and placement, as determined by the Investigator
Uncompensated congestive heart failure (NYHA Class III or IV)
Arrhythmia is secondary to electrolyte imbalance, thyroid disease, or other
reversible or non-cardiovascular cause
Known sensitivity to heparin or warfarin
Active or systemic infection
Any other significant uncontrolled or unstable medical condition (including but not limited to hypertension and diabetes)
Women who are pregnant or plan to become pregnant within the course of their participation in the investigation or who are breastfeeding
Life expectancy of less than 12 months
Patients with prosthetic valves
Contraindicated for transfemoral venous access
Older than 75 years
Current enrollment in any other clinical investigation