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Clinical Evaluation of Therapy™ Cool Path™ Duo Cardiac Ablation System for the Treatment of Typical Atrial Flutter (AFL)

This study has been completed.
Information provided by (Responsible Party):
St. Jude Medical Identifier:
First received: September 22, 2009
Last updated: November 1, 2013
Last verified: November 2013
The purpose of this study is to demonstrate that ablation with the Therapy™ Cool Path™ Duo cardiac ablation system can eliminate typical atrial flutter and that its use does not result in an unacceptable risk of serious adverse events (SAE's).

Condition Intervention Phase
Typical Atrial Flutter
Device: Therapy Cool Path Duo
Phase 3

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Clinical Evaluation of Therapy™ Cool Path™ Duo Cardiac Ablation System for the Treatment of Typical Atrial Flutter (AFL)

Further study details as provided by St. Jude Medical:

Primary Outcome Measures:
  • Primary Safety- Incidence of Intra Procedural Serious Cardiac Adverse Events Occuring Within 7 Days of Post-procedure, Regardless of Whether a Determination Can be Made Regarding Device Relatedness. [ Time Frame: 7 days ]
  • Primary Efficacy- 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 Cool Path Duo Ablation Catheter System is Obtained. [ Time Frame: 30 mins ]

Secondary Outcome Measures:
  • Secondary Efficacy- Freedom From Recurrence of Typical Atrial Flutter up to 3 Months Post Procedure [ Time Frame: 3 months ]

Enrollment: 188
Study Start Date: October 2009
Study Completion Date: January 2012
Primary Completion Date: August 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Treatment arm Device: Therapy Cool Path Duo
All patients will be treated with Therapy Cool Path Duo Ablation System for the treatment of typical atrial flutter.

Detailed Description:

This is a prospective, multi-center, non-randomized study (historical data as control) for the evaluating the safety and efficacy of Therapy TM Cool PathTM

Duo Ablation System for the treatment of typical atrial flutter (Cavo-triscupid isthmus dependent)


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

Inclusion Criteria:

  • A signed written Informed Consent
  • Presence of typical atrial flutter (cavotricuspid isthmus dependent)
  • If subjects are receiving antiarrhythmic drug therapy (Class I or Class III AAD)for an arrhythmia other than typical atrial flutter, then the subject needs to be controlled on their medication for at least 3 months. If the 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
  • Tricuspid valvular disease requiring surgery and/or a prosthetic tricuspid heart valve (i.e. significant)
  • Evidence of intracardiac thrombus or a history of clotting disorders
  • Participation in another investigational study
  • Cardiac surgery within 1 month of the intended procedure date
  • Allergy or contraindication to Heparin
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00984204

  Show 22 Study Locations
Sponsors and Collaborators
St. Jude Medical
  More Information

Responsible Party: St. Jude Medical Identifier: NCT00984204     History of Changes
Other Study ID Numbers: 90030638
Study First Received: September 22, 2009
Results First Received: November 1, 2013
Last Updated: November 1, 2013

Keywords provided by St. Jude Medical:
cavo-tricuspid dependent

Additional relevant MeSH terms:
Atrial Flutter
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes processed this record on April 28, 2017