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Atrial Flutter Ablation With Contact Therapy Cool Path Ablation System Along With EnSite Velocity Contact System (CONTACT_AFL)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01401361
Recruitment Status : Completed
First Posted : July 25, 2011
Results First Posted : December 23, 2013
Last Update Posted : February 15, 2019
Information provided by (Responsible Party):
Abbott Medical Devices

Brief Summary:

To demonstrate that the use of Contact Therapy™ Cool Path™ ablation catheter in conjunction with the EnSite Velocity Contact Technology for the treatment of typical atrial flutter

  • Does not result into unacceptable risk of intra-procedural composite serious adverse events and,
  • Does not affect efficacy of the ablation procedure The study will also evaluate the

Condition or disease Intervention/treatment Phase
Typical Atrial Flutter Device: Treatment Arm Phase 3

Detailed Description:

This will be a prospective, multi-center and non-randomized study. All enrolled patients who meet the eligibility criteria will receive ablation therapy for typical atrial flutter using the Contact Therapy™ Cool Path™ Cardiac Ablation System. Historical data from published (PMA P060019 Cool Path) , reported (IDE G090109 Cool Path Duo) and published literature on Atrial Flutter RF ablation studies is used to determine performance goals for primary study endpoints and derive the sample size. In addition, the following analyses will be performed in the study

  1. Validation of ECI against conventional methods of assessing tip tissue contact and
  2. Ancillary analysis to assess the relationship between the ECI and study outcomes. Subjects will undergo two follow up visits at day 10 and month 3 post procedure. The following assessments will be performed during these visits:

    • ECG
    • Query regarding adverse events since the last visit
    • Assessment of anti-arrhythmic and anti-coagulation medication
    • Query regarding recurrence or repeat ablation for typical atrial flutter

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 150 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Clinical Evaluation of Contact™ Therapy™ Cool Path™ Cardiac Ablation System in Conjunction With EnSite Velocity Contact™ Technology for the Treatment of Typical Atrial Flutter
Study Start Date : October 2011
Actual Primary Completion Date : April 2012
Actual Study Completion Date : September 2012

Arm Intervention/treatment
Experimental: Treatment Arm
Atrial Flutter RF Ablation treatment with the Contact Therapy Cool Path ablation catheter, 1500 T9 V1.43 RF Generator, Model 1611 connection cable, EnSite Velocity Contact™ Kit, and EnSite Velocity Contact software controlled via entitlement.
Device: Treatment Arm
The investigational parts of the system consists of Contact Therapy Cool Path ablation catheter, 1500 T9 V1.43 RF Generator, Model 1611 connection cable, EnSite Velocity Contact™ Kit, and EnSite Velocity Contact software controlled via entitlement .
Other Name: Ablation with Contact Therapy Cool Path system

Primary Outcome Measures :
  1. Primary Safety:Incidence of Composite, Serious Adverse Events Within 7 Days Post Procedure [ Time Frame: 7 days ]
    Primary safety is defined as the incidence of composite, serious adverse events within 7 days post-procedure, regardless of whether a determination can be made regarding device relatedness.

  2. Primary Efficacy [ Time Frame: 30 minutes ]
    Primary efficacy or Acute success is defined as achievement of bidirectional block in the cavo-tricuspid isthmus and non-inducibility of typical atrial flutter at least 30 minutes following the last RF ablation with the investigational system.

Secondary Outcome Measures :
  1. Secondary Efficacy [ Time Frame: 3 months ]

    Secondary efficacy / Chronic success is defined as freedom from recurrence of typical atrial flutter 3 months post ablation. Flutter recurrence will be documented on an ECG (or similar such as Holter, telemetry, rhythm strips, etc.). Repeat ablations, new antiarrhythmia medication (Class Ia, Ic, or III) or increase in the dosage of existing anti-arrhythmic medication (Class 1a,

    1c, III) during the 3 months post ablation are considered chronic failures.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • A signed written Informed Consent
  • Presence of typical atrial flutter (cavo-tricuspid isthmus dependent)
  • If subjects are receiving antiarrhythmic drug therapy (Class I or Class III AAD) for an arrhythmia other than typical atrial flutter, then they need to be controlled on their medication for at least 3 months. If a subject had typical atrial flutter before starting the AAD(s) (Class I or Class III) and then subsequently had another arrhythmia (i.e. atrial fibrillation), then the 3 month AAD criteria will not apply.
  • One documented occurrence of the study arrhythmia documented by ECG, Holter, telemetry strip, or transtelephonic monitor within the past 6 months
  • In good physical health
  • 18 years of age or older
  • Agree to comply with follow-up visits and evaluation

Exclusion Criteria:

  • Prior typical atrial flutter ablation treatment
  • Pregnancy
  • Atypical flutter or scar flutter (non isthmus dependent)
  • Significant coronary heart disease or heart failure; that is unstable angina pectoris and/or uncontrolled congestive heart failure (NYHA Class III or IV) at the time of enrollment
  • A recent myocardial infarction within 3 months of the intended procedure date
  • Permanent coronary sinus pacing lead
  • Clinically significant tricuspid valvular disease requiring surgery and/or a prosthetic tricuspid heart valve.
  • Evidence of intracardiac thrombus or a history of clotting disorders
  • Participation in another investigational study
  • Cardiac surgery within 1 month prior to the intended procedure date
  • Allergy or contraindication to Heparin

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01401361

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Sponsors and Collaborators
Abbott Medical Devices
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Principal Investigator: Larry Chinitz, MD NYU Langone Health
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Responsible Party: Abbott Medical Devices Identifier: NCT01401361    
Other Study ID Numbers: 90064772
First Posted: July 25, 2011    Key Record Dates
Results First Posted: December 23, 2013
Last Update Posted: February 15, 2019
Last Verified: January 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Atrial Flutter
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes