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"UNMASKING Study" For Atrial Fibrillation Recurrences Typing in Early Postoperative Period

23. april 2012 oppdatert av: Meshalkin Research Institute of Pathology of Circulation

Typing of the Atrial Fibrillation Recurrences in Early Postoperative Period After Pulmonary Veins Isolation Through Continous Subcutaneous Monitoring.

The aim of this study is to identify the most appropriate method for managing patients with AF recurrences after the first ablation procedure, through the diagnostic data stored by a subcutaneous AF monitor.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

150

Fase

  • Fase 3

Kontakter og plasseringer

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

Studiesteder

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:

  • highly symptomatic patients refractory to at least two antiarrhythmic drugs
  • patients with sustained PAF episodes and/or history of PersAF interrupted with cardioversion.

Exclusion Criteria:

  • congestive heart failure
  • ejection fraction <35%
  • left atrial diameter >60 mm
  • previous ablation procedure

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: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: Group 1 (no early recurrence)
Patients without atrial fibrillation recurrences through the implantable cardiac monitors during the 3 months post-ablation period.
Fremgangsmåte: Circumferential PVI and subcutaneous cardiac monitor implantation

The left atrium (LA) and PVs were explored through a transeptal approach. Real-time 3D LA maps were reconstructed by using a nonfluoroscopic navigation system (CARTO, Biosense-Webster Inc.). The ipsilateral left and right PVs were encircled in one lesion line by circumferential PV isolation. Radiofrequency energy was delivered at 43°C, 35 W, 0.5 cm away from the PV ostia at the anterior wall, and was reduced to 43°C, 30 W, 1 cm away from the PV ostia at the posterior wall, with a saline irrigation speed of 17 mL/min. The endpoint of ablation was PV isolation; this was confirmed when Lasso mapping showed the disappearance of all PV potentials or the dissociation of PV potentials from LA activity.

The ICM (Reveal XT, Medtronic Inc) was implanted the day of the ablation procedure or 1 week before.The Reveal XT was implanted in the parasternal area of the chest. The requirement for defining the exact final position was an R-wave amplitude ≥0.4 mV assessed through the Vector Check.
Aktiv komparator: Group 2 (early AF recurrence)
Patients with AF recurrences documented by the ICM during the 3 months post-ablation period.
Fremgangsmåte: Circumferential PVI and subcutaneous cardiac monitor implantation

The left atrium (LA) and PVs were explored through a transeptal approach. Real-time 3D LA maps were reconstructed by using a nonfluoroscopic navigation system (CARTO, Biosense-Webster Inc.). The ipsilateral left and right PVs were encircled in one lesion line by circumferential PV isolation. Radiofrequency energy was delivered at 43°C, 35 W, 0.5 cm away from the PV ostia at the anterior wall, and was reduced to 43°C, 30 W, 1 cm away from the PV ostia at the posterior wall, with a saline irrigation speed of 17 mL/min. The endpoint of ablation was PV isolation; this was confirmed when Lasso mapping showed the disappearance of all PV potentials or the dissociation of PV potentials from LA activity.

The ICM (Reveal XT, Medtronic Inc) was implanted the day of the ablation procedure or 1 week before.The Reveal XT was implanted in the parasternal area of the chest. The requirement for defining the exact final position was an R-wave amplitude ≥0.4 mV assessed through the Vector Check.
Aktiv komparator: Group 3 (early recurrence-no reablation)
Patients with AF recurrences documented by the ICM during the 3 months post-ablation period from Group 2 would not receive reablation.
Fremgangsmåte: Circumferential PVI and subcutaneous cardiac monitor implantation

The left atrium (LA) and PVs were explored through a transeptal approach. Real-time 3D LA maps were reconstructed by using a nonfluoroscopic navigation system (CARTO, Biosense-Webster Inc.). The ipsilateral left and right PVs were encircled in one lesion line by circumferential PV isolation. Radiofrequency energy was delivered at 43°C, 35 W, 0.5 cm away from the PV ostia at the anterior wall, and was reduced to 43°C, 30 W, 1 cm away from the PV ostia at the posterior wall, with a saline irrigation speed of 17 mL/min. The endpoint of ablation was PV isolation; this was confirmed when Lasso mapping showed the disappearance of all PV potentials or the dissociation of PV potentials from LA activity.

The ICM (Reveal XT, Medtronic Inc) was implanted the day of the ablation procedure or 1 week before.The Reveal XT was implanted in the parasternal area of the chest. The requirement for defining the exact final position was an R-wave amplitude ≥0.4 mV assessed through the Vector Check.
Aktiv komparator: Group 4 (early recurrence-early reablation)
Patients with AF recurrences documented by the ICM during the 3 months post-ablation period from Group 2 will receive early reablation based on data stored by implanted monitor.
Fremgangsmåte: Circumferential PVI and subcutaneous cardiac monitor implantation

The left atrium (LA) and PVs were explored through a transeptal approach. Real-time 3D LA maps were reconstructed by using a nonfluoroscopic navigation system (CARTO, Biosense-Webster Inc.). The ipsilateral left and right PVs were encircled in one lesion line by circumferential PV isolation. Radiofrequency energy was delivered at 43°C, 35 W, 0.5 cm away from the PV ostia at the anterior wall, and was reduced to 43°C, 30 W, 1 cm away from the PV ostia at the posterior wall, with a saline irrigation speed of 17 mL/min. The endpoint of ablation was PV isolation; this was confirmed when Lasso mapping showed the disappearance of all PV potentials or the dissociation of PV potentials from LA activity.

The ICM (Reveal XT, Medtronic Inc) was implanted the day of the ablation procedure or 1 week before.The Reveal XT was implanted in the parasternal area of the chest. The requirement for defining the exact final position was an R-wave amplitude ≥0.4 mV assessed through the Vector Check.

Hva måler studien?

Primære resultatmål

Resultatmål
Tidsramme
Freedom from atrial fibrillation or atrial flutter/tachycardia in Group 4 vs Group 3
Tidsramme: 12 months
12 months

Sekundære resultatmål

Resultatmål
Tidsramme
Freedom from AF in each group and the comparison of any group to each other
Tidsramme: 12 months
12 months

Samarbeidspartnere og etterforskere

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

Sponsor

Meshalkin Research Institute of Pathology of Circulation

Publikasjoner og nyttige lenker

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Generelle publikasjoner

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. februar 2008

Primær fullføring (Faktiske)

1. februar 2010

Studiet fullført (Faktiske)

1. november 2010

Datoer for studieregistrering

Først innsendt

15. juli 2010

Først innsendt som oppfylte QC-kriteriene

15. juli 2010

Først lagt ut (Anslag)

16. juli 2010

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

24. april 2012

Siste oppdatering sendt inn som oppfylte QC-kriteriene

23. april 2012

Sist bekreftet

1. april 2012

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • AFERAWCLP-022
  • RU AF 002 (Annen identifikator: State Research Institute of Circulation Pathology)

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