Effects of Catheter Ablation on Burden of Atrial Fibrillation (MRICEMAN)

NCT ID: NCT02639793

Last Updated: 2015-12-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE4

Total Enrollment

300 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-01-31

Study Completion Date

2020-01-31

Brief Summary

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The study will assess the atrial fibrillation burden recorded By implantable loop recorder at 12 and 24 months compared to baseline. The patients with clinical indication fo catheter ablation of paroxysmal atrial fibrillation will be randomized to three techniques: manual radiofrequency ablation, radiofrequency ablation using remote magnet monitoring, and cryoablation.

Detailed Description

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A total of 300 patients will be randomized to three different catheter ablation techniques (100 patients/group); radiofrequency ablation using remote magnet navigation, radiofrequency ablation using manual method, and cryoablation. A loop recorder (REVEAL) is implanted one month before the catheter ablation of paroxysmal atrial fibrillation and the effects of atrial fibrillation burden will be compared between the three methods at 12 and 24 months after ablation excluding the first three months´ blanking period.

The primary endpoints are:

1. the proportion of patients remaining free from atrial fibrillation, atrial flutter or atrial tachycardia (\> 2 minutes) recorded by the implantable cardiac monitor (Medtronic) at 24 months follow-up and
2. total atrial fibrillation burden recorded by the loop recorder.

Other endpoints:

1. Atrial fibrillation burden in 7 days Holter recording at 12 and 24 months compared to baseline,
2. the time to first documented symptomatic and asymptomatic recurrence of atrial fibrillation
3. prescription of antiarrhythmic drugs after the 3 months blanking period following the ablation
4. re-ablation after the index ablation procedure,
5. total procedural duration;
6. total time of fluoroscopy and radiation dose;
7. number and duration of cardiovascular hospitalization;
8. quality of life questionnaires at 12 months and 24 month compared with baseline,
9. cognitive function at 12 and 24 month compared with baseline,
10. cost-efficacy of the different ablation techniques.

Conditions

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Atrial Fibrillation

Keywords

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arrhythmias, quality of life

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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manual radiofrequency ablation

Radiofrequency catheter ablation using manual catheter manipulation will be used as an ablation technique.

Group Type ACTIVE_COMPARATOR

catheter ablation

Intervention Type PROCEDURE

Three different catheter ablation techniques will be used aimed at isolating the pulmonary veins from left atrium.The endpoint is defined as absence or dissociation of all pulmonary vein potentials as confirmed by the circular mapping catheter after a waiting period of 30 minutes after the last ablation. The use of adenosine or isoproterenol to detect concealed pulmonary vein conduction is voluntary.

magnet navigation ablation

Radiofrequency catheter ablation using remote magnet navigation will be used as an ablation technique.

Group Type ACTIVE_COMPARATOR

catheter ablation

Intervention Type PROCEDURE

Three different catheter ablation techniques will be used aimed at isolating the pulmonary veins from left atrium.The endpoint is defined as absence or dissociation of all pulmonary vein potentials as confirmed by the circular mapping catheter after a waiting period of 30 minutes after the last ablation. The use of adenosine or isoproterenol to detect concealed pulmonary vein conduction is voluntary.

cryoablation

Catheter ablation using cryoablation technique will be used as an ablation technique of atrial fibrillation.

Group Type ACTIVE_COMPARATOR

catheter ablation

Intervention Type PROCEDURE

Three different catheter ablation techniques will be used aimed at isolating the pulmonary veins from left atrium.The endpoint is defined as absence or dissociation of all pulmonary vein potentials as confirmed by the circular mapping catheter after a waiting period of 30 minutes after the last ablation. The use of adenosine or isoproterenol to detect concealed pulmonary vein conduction is voluntary.

Interventions

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catheter ablation

Three different catheter ablation techniques will be used aimed at isolating the pulmonary veins from left atrium.The endpoint is defined as absence or dissociation of all pulmonary vein potentials as confirmed by the circular mapping catheter after a waiting period of 30 minutes after the last ablation. The use of adenosine or isoproterenol to detect concealed pulmonary vein conduction is voluntary.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Patients with symptomatic paroxysmal atrial fibrillation fulfilling the contemporary guideline criteria for AF ablation

Exclusion Criteria

\- Any contraindication to catheter ablation
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Helsinki

OTHER

Sponsor Role collaborator

Heikki Huikuri

OTHER

Sponsor Role lead

Responsible Party

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Heikki Huikuri

Professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Heikki Huikuri, Prof

Role: PRINCIPAL_INVESTIGATOR

University of Oulu

Locations

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UOulu

Oulu, , Finland

Site Status

Heikki Huikuri

Oulu, , Finland

Site Status

Countries

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Finland

Central Contacts

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Heikki Huikuri, Prof

Role: CONTACT

Phone: +358400892330

Email: [email protected]

Pekka Raatikainen, Prof

Role: CONTACT

Phone: +35883154108

Email: [email protected]

Facility Contacts

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Heikki Huikuri, Prof

Role: primary

Pekka Raatikainen, prof

Role: backup

Heikki Huikuri, Prof

Role: primary

Related Links

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Other Identifiers

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AFOulu

Identifier Type: -

Identifier Source: org_study_id