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Tailored Treatment of Permanent Atrial Fibrillation (TTOP-AF)

17. september 2018 oppdatert av: Medtronic Cardiac Rhythm and Heart Failure

Tailored Treatment of Permanent Atrial Fibrillation - TTOP-AF

The purpose of this trial is to evaluate the safety and efficacy of the Medtronic Cardiac Ablation System compared to medical therapy in the persistent and long-standing persistent atrial fibrillation population.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

210

Fase

  • Fase 3

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Forente stater
    • Arizona
      • Scottsdale, Arizona, Forente stater, 85251
        • Arizona Arrhythmia Research Center
    • California
      • Los Angeles, California, Forente stater, 90095
        • UCLA Cardiac Arrhythmia Center
    • Florida
      • Jacksonville, Florida, Forente stater, 32224
        • Mayo Clinic Jacksonville
    • Georgia
      • Atlanta, Georgia, Forente stater, 30309
        • Piedmont Hospital
      • Atlanta, Georgia, Forente stater, 30308
        • Emory Crawford Long Hospital
    • Illinois
      • Chicago, Illinois, Forente stater, 60637
        • University of Chicago
    • Indiana
      • Indianapolis, Indiana, Forente stater, 46202
        • Krannert Institute of Cardiology
    • Iowa
      • Davenport, Iowa, Forente stater, 52803
        • Genesis Medical Center
      • Des Moines, Iowa, Forente stater, 50309
        • Iowa Heart Center
    • Maryland
      • Baltimore, Maryland, Forente stater, 21287
        • Johns Hopkins Hospital
      • Takoma Park, Maryland, Forente stater, 20912
        • Washington Adventist Hospital
    • Massachusetts
      • Boston, Massachusetts, Forente stater, 02115
        • Brigham and Women's Hospital
      • Boston, Massachusetts, Forente stater, 02114
        • Massachusetts General Hospital Cardiac Arrhythmia
      • Burlington, Massachusetts, Forente stater, 01805
        • Lahey Clinic
    • Michigan
      • Ann Arbor, Michigan, Forente stater, 48109
        • University of Michigan
      • Grand Rapids, Michigan, Forente stater, 49503
        • Spectrum Health Research Department
    • New York
      • Rochester, New York, Forente stater, 14642
        • University of Rochester
    • North Carolina
      • Winston-Salem, North Carolina, Forente stater, 27157
        • Wake Forest University
    • Ohio
      • Columbus, Ohio, Forente stater, 43210
        • The Ohio State University
    • Pennsylvania
      • Erie, Pennsylvania, Forente stater, 16502
        • Consultants in Cardiovascular Diseases
    • Texas
      • Austin, Texas, Forente stater, 78756
        • Austin Heart
      • Houston, Texas, Forente stater, 77030
        • Texas Heart Institute at St. Luke's Episcopal
    • Virginia
      • Norfolk, Virginia, Forente stater, 23507
        • Sentara Cardiovascular Research Institute
  • Nederland
      • Nieuwegein, Nederland
        • St. Antonius Ziekenhuis

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 70 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

INCLUSION CRITERIA:

  • History of symptomatic, continuous atrial fibrillation defined as: Continuous atrial fibrillation lasting greater than 1 year but less than 4 years or nonself-terminating atrial fibrillation, lasting greater than 7 days but no more than 1 year, with at least one failed direct current cardioversion. A failed cardioversion was defined as an unsuccessful cardioversion or one in which normal sinus rhythm was established but not maintained beyond 7 days.
  • Atrial fibrillation symptoms included the following: palpitations, fatigue,exertional dyspnea, exercise intolerance
  • Age between 18 and 70 years
  • Failure of at least one Class I or III rhythm control drug
  • Willingness, ability and commitment to participate in baseline and follow-up evaluations for the full length of the study.

EXCLUSION CRITERIA:

  • Structural heart disease of clinical significance including:

    • Previous cardiac surgery (excluding coronary artery bypass graft and mitral valve repair)
    • Symptoms of congestive heart failure including, but not limited to, New York Heart Association (NYHA) Class III or IV congestive heart failure and/or documented ejection fraction <40% measured by acceptable cardiac testing
    • Left atrial diameter >55 mm
    • Moderate to severe mitral or aortic valvular heart disease
    • Stable/unstable angina or ongoing myocardial ischemia
    • Myocardial infarction (MI) within 3 months of enrollment
    • Congenital heart disease (not including atrial septal defect or patent foramen ovale without a right to left shunt) where the underlying abnormality increases the risk of an ablative procedure
    • Prior atrial septal defect of patent foramen ovale closure with a device using a percutaneous approach
    • Hypertrophic cardiomyopathy (left ventricular septal wall thickness >1.5 cm)
    • Pulmonary hypertension (mean or systolic pulmonary artery pressure >50 mm Hg on Doppler echo)
  • Any prior ablation for atrial fibrillation
  • Enrollment in any other ongoing arrhythmia study
  • Any ventricular tachyarrhythmia currently being treated where the arrhythmia or the management may interfere with this study
  • Active infection or sepsis
  • Any history of cerebral vascular disease including stroke or transient ischemic attacks
  • Pregnancy or lactation
  • Left atrial thrombus at the time of ablation
  • Untreatable allergy to contrast media
  • Any diagnosis of atrial fibrillation secondary to electrolyte imbalance, thyroid disease, or any other reversible or non-cardiovascular causes
  • History of blood clotting (bleeding or thrombotic) abnormalities
  • Known sensitivities to heparin or warfarin
  • Severe chronic obstructive pulmonary disease (defined as forced expiratory volume 1 (FEV1) <1)
  • Severe co-morbidity or poor general physical/mental health that, in the opinion of the investigator, will not allow the subject to be a good study candidate

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: 1
Ablation Management
Fremgangsmåte: Medtronic Cardiac Ablation System
Arm 1 (Ablation Management): Ablation procedures using investigational catheters in left atrium. Cardioversion could be used to restore sinus rhythm if needed.
Aktiv komparator: 2
Medical Management
Legemiddel: Class I or III Antiarrhythmic Medications
Arm 2 (Medical Management): Class I or III antiarrhythmic drugs. Changes in dosing, antiarrhythmic drugs or combinations of antiarrhythmic drugs were allowed. Direct current cardioversions were also allowed at the discretion of the investigator.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Chronic Effectiveness
Tidsramme: 6 months

The chronic efficacy endpoint was a treatment success/failure measure for each subject computed at 6 months. Treatment success included:

  1. A 90% reduction in clinically significant atrial fibrillation from baseline to the 6 month time point based on a Holter recording. Clinically significant atrial fibrillation was defined as sustained atrial fibrillation lasting more than 10 minutes.
  2. The subject was off all antiarrhythmic drugs at 6 months (Ablation Management arm only)
  3. The Investigator judged all procedures to be acutely successful (Ablation Management arm only).
6 months
Acute Safety
Tidsramme: 7 days
The primary endpoint for acute safety was a success/failure variable calculated for each subject in Ablation Management at the 7 day post-procedure time point. Any subject with at least one adverse event adjudicated by the Data Safety Monitoring Board as both serious and either probably or definitely procedure and/or device-related occurring within 7 days of the ablation procedure was considered an acute safety failure, regardless of whether the event occurred following the index or retreatment ablation procedure.
7 days
Chronic Safety
Tidsramme: 6 months
The primary endpoint for chronic safety was a success/failure variable calculated for each subject at 6 months. Any subject that had at least one adverse event that met designated seriousness and relatedness criteria for the particular treatment group as adjudicated by the Data Safety Monitoring Board was considered a chronic safety failure. Adverse events in Ablation Management that were acute (≤7 days) were not included in the chronic safety primary endpoint. Given the disparity in the length of time at risk between treatment arms,the Chronic Safety endpoint was not statistically powered.
6 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Acute Efficacy
Tidsramme: Procedure conclusion

A treatment success/failure up to the conclusion of the procedure for each subject in Ablation Management. A subject was considered successfully treated if the following were true:

  • Medtronic ablation catheters were used to achieve procedure success.
  • All accessible pulmonary veins were isolated.
  • At least 50% reduction of complex fractionated atrial electrograms mapped and ablated with Medtronic ablation catheters.
  • Sinus rhythm was achieved upon leaving the electrophysiology lab (±cardioversion).
Procedure conclusion
Improvement of Left Atrial Size at 6 Months Compared to Baseline.
Tidsramme: 6 months
Left atrial diameter (LAD), as measured by transthoracic echocardiogram (TTE) looking at the longitudinal long axis at baseline and at the 6 month follow-up visit in both the Ablation and Medical Management arms.
6 months
Improvement of Left Ventricular Ejection Fraction at 6 Months Compared to Baseline.
Tidsramme: 6 months
Left ventricular ejection fraction (LVEF), as measured by transthoracic echocardiogram at baseline and 6 months in both the Ablation and Medical Management arms.
6 months
Improvement in Atrial Fibrillation (AF) Symptom Severity Scores Over 6 Months Compared to Baseline.
Tidsramme: 6 months
The severity of subject's atrial fibrillation related symptoms on a scale from 1 (no symptoms) to 5 (most severe). The symptoms included palpitations, fatigue, shortness of breath, lightheadedness or dizziness, and lack of energy during exertion or exercise. The scores were tabulated at the 1, 3 and 6 month follow-up visits. Scores could range from 5 to 25, indicating a spectrum of subject status from asymptomatic to severely symptomatic.
6 months
Improved Quality of Life Over 6 Months Compared to Baseline.
Tidsramme: 6 months
The SF-36 questionnaire was administered to subjects at baseline, 1, 3 and 6 month visits. The SF-36 is a multi-purpose, short-form health survey with only 36 questions. It yields an 8-scale profile of functional health and well-being scores as well as psychometrically-based Physical Component Score and Mental Component Score. The possible range for Physical Component Score and Mental Component Score is 0 to 100. The higher score, the better quality of life.
6 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Medtronic Cardiac Rhythm and Heart Failure

Publikasjoner og nyttige lenker

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Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. mai 2007

Primær fullføring (Faktiske)

1. november 2010

Studiet fullført (Faktiske)

1. november 2010

Datoer for studieregistrering

Først innsendt

8. august 2007

Først innsendt som oppfylte QC-kriteriene

8. august 2007

Først lagt ut (Anslag)

10. august 2007

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

16. oktober 2018

Siste oppdatering sendt inn som oppfylte QC-kriteriene

17. september 2018

Sist bekreftet

1. september 2018

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • AFI-30

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