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A Clinical Study of the Arctic Front Cryoablation Balloon for the Treatment of Paroxysmal Atrial Fibrillation (Stop-AF)
This study is ongoing, but not recruiting participants.
First Received: August 31, 2007   Last Updated: January 27, 2009   History of Changes
Sponsor: CryoCath Technologies Inc.
Information provided by: CryoCath Technologies Inc.
ClinicalTrials.gov Identifier: NCT00523978
  Purpose

PS-023 is a randomized controlled clinical study. The purpose of this study is to determine whether this new catheter system (Arctic Front CryoAblation Catheters, FlexCath Steerable Sheath) is safe and effective for the treatment of paroxysmal atrial fibrillation, as well as to see if this treatment is better compared to a medication. This catheter system uses freezing energy, cryoablation, to ablate (destroy) abnormal tissue in or near the pulmonary veins. A refrigerant (cooling material) is delivered within the catheter to cool the catheter tip. This freezes and destroys the cells at the entrance to the pulmonary veins. If the atrial fibrillation comes from somewhere else in the heart, another catheter, the Freezor MAX, will be used to freeze that area. This experimental catheter also uses freezing to ablate abnormal tissue. Many atrial fibrillation patients also have another arrhythmia called atrial flutter. In order to treat or to prevent atrial flutter after the procedure, the Freezor MAX catheter may be used to freeze the cells in the area of the heart where atrial flutter starts.


Condition Intervention Phase
Paroxysmal Atrial Fibrillation
Device: Arctic Front Cryoablation Catheter
Drug: Flecainide or Sotalol or Propafenone
Phase III

Study Type: Interventional
Study Design: Treatment, Randomized, Open Label, Active Control, Parallel Assignment, Safety/Efficacy Study
Official Title: A Randomized, Controlled Clinical Trial of Catheter Cryoablation in the Treatment of Paroxysmal Atrial Fibrillation.

Resource links provided by NLM:


Further study details as provided by CryoCath Technologies Inc.:

Primary Outcome Measures:
  • To evaluate the safety of treatment with the Arctic Front™ Cardiac CryoAblation Catheter System, including the FlexCath™ Steerable Sheath and Freezor® MAX Cardiac Cryoablation Catheter, compared to a randomized drug control group, by assessing the [ Time Frame: After the last patient is enrolled and the 12-month follow-up is terminated. ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • To evaluate the effectiveness of treatment with the Arctic Front™ Cardiac CryoAblation Catheter System, including the FlexCath™ Steerable Sheath and Freezor® MAX Cardiac Cryoablation Catheter, compared to a randomized drug control group, by assess [ Time Frame: After the last patient is enrolled and the 12-month follow-up is terminated. ] [ Designated as safety issue: No ]

Estimated Enrollment: 243
Study Start Date: October 2006
Estimated Study Completion Date: June 2009
Estimated Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Experimental
an experimental group receiving cryoablation and, optionally, a previously failed Atrial Fibrillation Drug.
Device: Arctic Front Cryoablation Catheter
an experimental group receiving cryoablation and, optionally, a previously failed Atrial Fibrillation Drug.
Control: Active Comparator
a control group receiving only an Atrial Fibrillation Drug
Drug: Flecainide or Sotalol or Propafenone
Flecainide 200 mg / day Propafenone 450 mg / day Propafenone-SR 650 mg / day Sotalol 240 mg / day

  Show Detailed Description

  Eligibility

Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Documented Paroxysmal Atrial Fibrillation (PAF): PAF diagnosis, 2 episodes of PAF within the last 2 months, at least 1 episode of PAF must be documented
  • Age 18-75
  • Documented Effectiveness Failure of one (1) AF drug
  • Willing to be randomized to either group and do full 12 month follow-up
  • Able to follow standardized AF drug protocol

Exclusion Criteria:

  • Any cardioversion within 3 months or more than 2 within 2 years
  • Amiodarone within 6 months
  • LA size > 5.0cm
  • Previous LA ablation/surgery, structural heart disease, heart failure class III or IV
  • Hypertrophic cardiomyopathy, Mitral prosthesis
  • Unstable angina, uncontrolled hyperthyroidism
  • Stroke or TIA within 6 months, MI within 2 months, cardiac surgery within 3 months
  • Thrombocytosis, thrombocytopenia
  • Any condition contraindicating chronic anticoagulation
  • EF <40%
  • Pregnancy
  • Life expectancy <1year
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00523978

  Hide Study Locations
Locations
United States, Alabama
University of Alabama
Birmingham, Alabama, United States, 35294-0007
United States, California
Cedar Sinai Medical Center
Los Angeles, California, United States, 90048
Stanford Hospital
Stanford, California, United States, 94305-5233
UC Davis Medical Center
Sacramento, California, United States, 98517
United States, Colorado
Colorado Cardiac Alliance -- Memorial Hospital
Colorado Springs, Colorado, United States, 80907
United States, Florida
BayHeart Group -- St-Joseph's Hospital
Tampa, Florida, United States, 33607
United States, Georgia
Piedmont Hospital
Atlanta, Georgia, United States, 30309
Emery Crawford Long Hospital
Atlanta, Georgia, United States, 30308
United States, Iowa
Iowa Heart Center
Des Moines, Iowa, United States, 50314
United States, Massachusetts
Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
United States, Minnesota
Mayo Clinic
Rochester, Minnesota, United States, 55902
United States, New Mexico
New Mexico Heart Institute
Albuquerque, New Mexico, United States, 87102
United States, Ohio
Ohio State University
Columbus, Ohio, United States, 43210
Cleveland Clinic Foundation
Cleveland, Ohio, United States, 44195
United States, Pennsylvania
University of Pennsylvania Health
Philadelphia, Pennsylvania, United States, 19104-4283
United States, Texas
Baylor Heart and Vascular Hospital
Dallas, Texas, United States, 75226
United States, Virginia
Inova Research Center
Falls Church, Virginia, United States, 22042
Medical College of Virginia
Richmond, Virginia, United States, 23219
United States, Wisconsin
Cardiology Associates of Green Bay
Green Bay, Wisconsin, United States, 54301-3596
Arrhythmia Center of Southern WI
Milwaukee, Wisconsin, United States, 53215
Canada, Quebec
Montreal Heart Institute
Montreal, Quebec, Canada, H1T 1C8
Sponsors and Collaborators
CryoCath Technologies Inc.
Investigators
Principal Investigator: Douglas L. Packer, MD Mayo Clinic
  More Information

No publications provided

Responsible Party: CryoCath Technologies Inc. ( Patrick Chauvet )
Study ID Numbers: PS-023
Study First Received: August 31, 2007
Last Updated: January 27, 2009
ClinicalTrials.gov Identifier: NCT00523978     History of Changes
Health Authority: United States: Food and Drug Administration

Keywords provided by CryoCath Technologies Inc.:
Atrial Fibrillation

Additional relevant MeSH terms:
Sympatholytics
Neurotransmitter Agents
Heart Diseases
Molecular Mechanisms of Pharmacological Action
Adrenergic Agents
Physiological Effects of Drugs
Cardiovascular Agents
Pharmacologic Actions
Sotalol
Pathologic Processes
Propafenone
Autonomic Agents
Therapeutic Uses
Flecainide
Adrenergic beta-Antagonists
Adrenergic Antagonists
Cardiovascular Diseases
Peripheral Nervous System Agents
Atrial Fibrillation
Anti-Arrhythmia Agents
Arrhythmias, Cardiac

ClinicalTrials.gov processed this record on November 25, 2009