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Atrial FibrillationNCT02614521

Predictive Factors for Successful Outcome After Pulmonary Veins Ablation to Treat Paroxysmal Atrial Fibrillation

An observational study of Atrial Fibrillation, run by Elpen Pharmaceutical Co. Inc. at 1 site in Greece.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

Atrial fibrillation is the most common serious abnormal heart rhythm affecting about 2% to 3% of the population, being associated with a 1.5- to 1.9-fold higher risk of death. Patients with paroxysmal AF in whom antiarrhythmic drug therapy does not elicit a response are potential candidates for RF ablation of AF. Read more about this study

Who is it for?
Ages 18 to 90 years
Conditions the study is for
Atrial Fibrillation
What is being tested?
pulmonary veins ablation's successful outcome
How many people
0 participants
Where
1 siteGreece
Study dates
Jan 2017to Feb 2019
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 90 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Patients with paroxysmal atrial fibrillation

Who may be able to join

  • Males and Females
  • Age >18 years
  • Paroxysmal AF (PAF) scheduled to undergo pulmonary vein (PV) ablation
  • Singed written consent form
  • Patients who will comply with study procedures

Who cannot join

  • Age <18 years Permanent atrial fibrillation
  • Acute myocardial infraction, coronary artery bypass graft surgery or percutaneous transluminal coronary angioplasty within less than 2 months prior to ablation procedure
  • Life expectancy less than 12 months, according to investigator's judgment
  • Participation to other clinical trial
  • Patients who will not be compliant with study procedures

Trial locations and contacts

1 site in 1 country.

Greece1 site

  • Hippokrateion University Hospital

    Thessaloniki

Other trials in Greece

About this study

Official title: A Single-center, Observational, 12-months Study to Examine the Predictive Factors for Successful Outcome After Pulmonary Veins Ablation to Treat Patients With Paroxysmal Atrial Fibrillation.

Atrial fibrillation is the most common serious abnormal heart rhythm affecting about 2% to 3% of the population, being associated with a 1.5- to 1.9-fold higher risk of death. Patients with paroxysmal AF in whom antiarrhythmic drug therapy does not elicit a response are potential candidates for RF ablation of AF. The success rate of RF ablation in the treatment of AF varies depending on the type and duration of AF (ie, paroxysmal vs persistent), structural remodeling of the heart, co-morbidities and the technique of the cardiac electrophysiologist, but it usually ranges from 60-80% over 1-2 years of follow-up.

To study and predict the successful outcome of RF ablation is of great clinical importance. Moreover, the detection of predictive factors for successful outcome may alter the therapeutic strategy determining a subgroup of patients in the need of more invasive management.

Read the detailed description

The study will include 150 patients scheduled to undergo pulmonary vein (PV) ablation because of non-responsive to medical therapy PAF. ECG recordings will be obtained during sinus rhythm before and after PV ablation with a 3 - channel digital recorder for 10 minutes, and digitized with a 16-bit accuracy at a sampling rate of 1000 Hz. The P wave will be analyzed using the Morlet wavelet. Other parameters to be analyzed include 12 lead surface ECG, the burden of main and secondary morphologies and echocardiographic indexes of left atrial mechanical function. Follow-up visits will be held in 3, 6 and 12 months after the ablation procedure.

Being tested
pulmonary veins ablation's successful outcome
Keywords
Pulmonary veins ablation, Paroxysmal atrial fibrillation
Medical subject headings
Atrial Fibrillation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • pulmonary veins ablation's successful outcomeOther

    Assessment of predictive factors in patients with successful outcome of pulmonary veins ablations and suffer from paroxysmal atrial fibrillation.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Paroxysmal Atrial Fibrillation (PAF) relapse(s)

    Primary end point is one or more PAF relapse(s) during a period of 12 months after the ablation procedure.

    Measured: 12 months

Secondary outcomes (1)

  1. Number of Adverse Events

    Adverse Events occurred during study period

    Measured: 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted25 Nov 2015 (estimated)
  2. Study startJan 2017
  3. Primary completionFeb 2019 (estimated)
  4. Study completionFeb 2019 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Other
Time perspective
Prospective
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02614521
Sponsor's protocol ID
2015-IIS-GR-AF
Status last verified
Dec 2018
First submitted
23 Nov 2015
Last updated
13 May 2019
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Publications

  • Pappone C, Rosanio S, Oreto G, Tocchi M, Gugliotta F, Vicedomini G, Salvati A, Dicandia C, Mazzone P, Santinelli V, Gulletta S, Chierchia S. Circumferential radiofrequency ablation of pulmonary vein ostia: A new anatomic approach for curing atrial fibrillation. Circulation. 2000 Nov 21;102(21):2619-28. doi: 10.1161/01.cir.102.21.2619.

    PubMed 11085966

  • Liu X, Long D, Dong J, Hu F, Yu R, Tang R, Fang D, Hao P, Lu C, Liu X, He X, Liu X, Ma C. Is circumferential pulmonary vein isolation preferable to stepwise segmental pulmonary vein isolation for patients with paroxysmal atrial fibrillation? Circ J. 2006 Nov;70(11):1392-7. doi: 10.1253/circj.70.1392.

    PubMed 17062959

  • Ouyang F, Antz M, Ernst S, Hachiya H, Mavrakis H, Deger FT, Schaumann A, Chun J, Falk P, Hennig D, Liu X, Bansch D, Kuck KH. Recovered pulmonary vein conduction as a dominant factor for recurrent atrial tachyarrhythmias after complete circular isolation of the pulmonary veins: lessons from double Lasso technique. Circulation. 2005 Jan 18;111(2):127-35. doi: 10.1161/01.CIR.0000151289.73085.36. Epub 2004 Dec 27.

    PubMed 15623542

  • Oral H. Mechanisms of atrial fibrillation: lessons from studies in patients. Prog Cardiovasc Dis. 2005 Jul-Aug;48(1):29-40. doi: 10.1016/j.pcad.2005.06.003.

    PubMed 16194690

  • Pappone C, Santinelli V, Manguso F, Vicedomini G, Gugliotta F, Augello G, Mazzone P, Tortoriello V, Landoni G, Zangrillo A, Lang C, Tomita T, Mesas C, Mastella E, Alfieri O. Pulmonary vein denervation enhances long-term benefit after circumferential ablation for paroxysmal atrial fibrillation. Circulation. 2004 Jan 27;109(3):327-34. doi: 10.1161/01.CIR.0000112641.16340.C7. Epub 2004 Jan 5.

    PubMed 14707026

  • Xia Y, Hertervig E, Kongstad O, Ljungstrom E, Platonov P, Holm M, Olsson B, Yuan S. Deterioration of interatrial conduction in patients with paroxysmal atrial fibrillation: electroanatomic mapping of the right atrium and coronary sinus. Heart Rhythm. 2004 Nov;1(5):548-53. doi: 10.1016/j.hrthm.2004.07.016.

    PubMed 15851217

  • Byrd GD, Prasad SM, Ripplinger CM, Cassilly TR, Schuessler RB, Boineau JP, Damiano RJ Jr. Importance of geometry and refractory period in sustaining atrial fibrillation: testing the critical mass hypothesis. Circulation. 2005 Aug 30;112(9 Suppl):I7-13. doi: 10.1161/CIRCULATIONAHA.104.526210.

    PubMed 16159868

  • Van Beeumen K, Houben R, Tavernier R, Ketels S, Duytschaever M. Changes in P-wave area and P-wave duration after circumferential pulmonary vein isolation. Europace. 2010 Jun;12(6):798-804. doi: 10.1093/europace/eup410. Epub 2010 Jan 3.

    PubMed 20047928

  • Blanche C, Tran N, Rigamonti F, Burri H, Zimmermann M. Value of P-wave signal averaging to predict atrial fibrillation recurrences after pulmonary vein isolation. Europace. 2013 Feb;15(2):198-204. doi: 10.1093/europace/eus251. Epub 2012 Aug 31.

    PubMed 22941968

  • Morlet D, Peyrin F, Desseigne P, Touboul P, Rubel P. Wavelet analysis of high-resolution signal-averaged ECGs in postinfarction patients. J Electrocardiol. 1993 Oct;26(4):311-20. doi: 10.1016/0022-0736(93)90052-f.

    PubMed 8228720

  • Vassilikos V, Dakos G, Chatzizisis YS, Chouvarda I, Karvounis C, Maynard C, Maglaveras N, Paraskevaidis S, Stavropoulos G, Styliadis CI, Mochlas S, Styliadis I. Novel non-invasive P wave analysis for the prediction of paroxysmal atrial fibrillation recurrences in patients without structural heart disease: a prospective pilot study. Int J Cardiol. 2011 Dec 1;153(2):165-72. doi: 10.1016/j.ijcard.2010.08.029. Epub 2010 Sep 15.

    PubMed 20837368

  • Camm AJ, Lip GY, De Caterina R, Savelieva I, Atar D, Hohnloser SH, Hindricks G, Kirchhof P; ESC Committee for Practice Guidelines (CPG). 2012 focused update of the ESC Guidelines for the management of atrial fibrillation: an update of the 2010 ESC Guidelines for the management of atrial fibrillation. Developed with the special contribution of the European Heart Rhythm Association. Eur Heart J. 2012 Nov;33(21):2719-47. doi: 10.1093/eurheartj/ehs253. Epub 2012 Aug 24. No abstract available.

    PubMed 22922413

  • Martinez A, Alcaraz R, Rieta JJ. Application of the phasor transform for automatic delineation of single-lead ECG fiducial points. Physiol Meas. 2010 Nov;31(11):1467-85. doi: 10.1088/0967-3334/31/11/005. Epub 2010 Sep 24.

    PubMed 20871135

  • Packer DL, Kowal RC, Wheelan KR, Irwin JM, Champagne J, Guerra PG, Dubuc M, Reddy V, Nelson L, Holcomb RG, Lehmann JW, Ruskin JN; STOP AF Cryoablation Investigators. Cryoballoon ablation of pulmonary veins for paroxysmal atrial fibrillation: first results of the North American Arctic Front (STOP AF) pivotal trial. J Am Coll Cardiol. 2013 Apr 23;61(16):1713-23. doi: 10.1016/j.jacc.2012.11.064. Epub 2013 Mar 21.

    PubMed 23500312

  • Ketels S, Houben R, Van Beeumen K, Tavernier R, Duytschaever M. Incidence, timing, and characteristics of acute changes in heart rate during ongoing circumferential pulmonary vein isolation. Europace. 2008 Dec;10(12):1406-14. doi: 10.1093/europace/eun287. Epub 2008 Oct 19.

    PubMed 18936041

Questions about this trial

What is this clinical trial studying?

An observational study of Atrial Fibrillation, run by Elpen Pharmaceutical Co. Inc. at 1 site in Greece.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 13 May 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Greece. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Paroxysmal Atrial Fibrillation (PAF) relapse(s) (time frame: 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02614521, which also lists 15 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 May 2019.

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