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Patent Foramen Ovale Closure or Medical Therapy After Stroke - RESPECT Trial

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ClinicalTrials.gov Identifier: NCT00465270
Recruitment Status : Completed
First Posted : April 24, 2007
Results First Posted : September 4, 2018
Last Update Posted : February 18, 2019
Information provided by (Responsible Party):
Abbott Medical Devices

Brief Summary:
The purpose of this study is to investigate whether percutaneous Patent Foramen Ovale (PFO) closure, using the AMPLATZER PFO Occluder, is superior to current standard of care medical treatment in the prevention of recurrent embolic stroke.

Condition or disease Intervention/treatment Phase
Cryptogenic Stroke Device: AMPLATZER PFO Occluder Other: Standard of Care - Medical Management Not Applicable

Expanded Access : An investigational treatment associated with this study is no longer available outside the clinical trial.   More info ...

Detailed Description:
The AMPLATZER PFO Occluder is a percutaneous, transcatheter occlusion device intended for the non-surgical closure of patent foramen ovale in subjects who have had a cryptogenic stroke due to presumed paradoxical embolism within the last 270 days.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 980 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: AMPLATZER PFO Occluder
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Randomized Evaluation of Recurrent Stroke Comparing PFO Closure to Established Current Standard of Care Treatment (RESPECT)
Actual Study Start Date : August 2003
Actual Primary Completion Date : May 2012
Actual Study Completion Date : May 2016

Arm Intervention/treatment
Experimental: Device
Device: AMPLATZER PFO Occluder
patent foramen ovale closure device

Active Comparator: Standard or Care - Medical Management
Medical treatment with Aspirin alone, Coumadin alone, Clopidogrel alone, or Aspirin combined with dipyridamole.
Other: Standard of Care - Medical Management
Medical management - aspirin alone, Coumadin alone, Clopidogrel alone, aspirin combined with dipyridamole

Primary Outcome Measures :
  1. Composite of Recurrent Nonfatal Ischemic Stroke, Fatal Ischemic Stroke, or Early Death After Randomization [ Time Frame: Trial enrollment was stopped once 25 unique subjects were mutually adjudicated by the CEC and DSMB as having experienced a primary endpoint event. This occurred on December 20, 2011. The mean follow-up time was 2.6 years. ]

    Nonfatal stroke is defined as: focal neurological deficit presumed to be due to focal ischemia, and either 1) symptoms persisting 24 hours or greater, or 2) symptoms persisting less than 24 hours but associated with MR or CT imaging findings of a new, neuroanatomically relevent, cergral infarct.

    Post-randomization death is defined as: in the MM group as all-cause mortality within 45 days after randomization, and in the device group as all-cause mortality 30 days after implant or 45 days after randomizaiton, whichever occurs last.

Secondary Outcome Measures :
  1. Rate of Complete PFO Closure (Assessed by TEE Bubble Study) at the 6-month Follow-up in the Device Group [ Time Frame: 6 months ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subjects who have had a cryptogenic stroke within the last 270 days
  • Subjects who have been diagnosed with a Patent Foramen Ovale (PFO)
  • Subjects willing to participate in follow-up visits

Exclusion Criteria:

  • Subjects with intracardiac thrombus or tumor
  • Subjects who have an acute or recent (within 6 months) myocardial infarction or unstable angina
  • Subjects with left ventricular aneurysm or akinesis
  • Subjects with atrial fibrillation/atrial flutter (chronic or intermittent)
  • Subjects with another source of right to left shunt identified at baseline, including an atrial septal defect and/or fenestrated septum
  • Subjects with contraindication to aspirin or Clopidogrel therapy
  • Pregnant or desire to become pregnant within the next year

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 ClinicalTrials.gov identifier (NCT number): NCT00465270

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Sponsors and Collaborators
Abbott Medical Devices
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Principal Investigator: Jeffrey Saver, MD UCLA Stroke Center
Principal Investigator: John D Carroll, MD University of Colorado, Denver
Principal Investigator: Richard Smalling, MD University of Texas Houston Health Science Center
Principal Investigator: David Thaler, MD Tufts Medical Center
Additional Information:
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Responsible Party: Abbott Medical Devices
ClinicalTrials.gov Identifier: NCT00465270    
Other Study ID Numbers: AGA-006
First Posted: April 24, 2007    Key Record Dates
Results First Posted: September 4, 2018
Last Update Posted: February 18, 2019
Last Verified: January 2019
Keywords provided by Abbott Medical Devices:
Patent foramen ovale
Additional relevant MeSH terms:
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Ischemic Stroke
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases