NCT03573869

Brief Summary

In this study 404 patients with heart failure and an ejection fraction of 0.40 or less, with paroxysmal atrial fibrillation, will be randomly assigned to standard treatment or standard treatment plus a session of cryoballoon ablation (left atrial balloon cryoablation for pulmonary vein isolation). All patients with either have an ICD or CRT-D/P device implanted or an implantable electrocardiographic monitoring device. The primary study endpoint will be the time to AF burden exceeding 1% over any 30-day period (calculated as the ratio of time spent in AF over total time).16 This AF burden corresponds to 7.2 hours per month. A powered secondary endpoint will be the time to the composite of all-cause mortality and unplanned hospitalization for heart failure.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
404

participants targeted

Target at P75+ for not_applicable atrial-fibrillation

Timeline
Completed

Started Jun 2018

Typical duration for not_applicable atrial-fibrillation

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

June 1, 2018

Completed
7 days until next milestone

First Submitted

Initial submission to the registry

June 8, 2018

Completed
21 days until next milestone

First Posted

Study publicly available on registry

June 29, 2018

Completed
3.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2021

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2022

Completed
Last Updated

July 9, 2018

Status Verified

July 1, 2018

Enrollment Period

3.6 years

First QC Date

June 8, 2018

Last Update Submit

July 6, 2018

Conditions

Outcome Measures

Primary Outcomes (1)

  • Time to exceed AG burden cut-off of 1%

    The time to AF burden exceeding 1% over any 30-day period (calculated as the ratio of time spent in AF over total time)

    Up to 2 years

Secondary Outcomes (1)

  • All-cause mortality or hospitalization for heart failure

    Up to 2 years

Study Arms (2)

Cryoballoon ablation

EXPERIMENTAL

A 28-mm cryoballoon (Arctic Front Advance™ Cardiac CryoAblation Catheter, Medtronic, Minneapolis, MN) will be employed. The cryoballoon catheter will be introduced into the left atrium, following a single transeptal puncture, through a 12F FlexCath steerable sheath (Medtronic), constantly flushed with heparinized saline. A circular mapping catheter (Achieve, Medtronic) will be advanced through the cryoballoon to the PV orifice and positioned as proximally as possible inside the vessel to record the PV potentials at baseline and monitor the isolation procedure in real time.

Procedure: Cryoballoon ablation

Standard treatment

NO INTERVENTION

Standard treatment, including at least one rhythm control medication, on top of optimized rate control and HF treatment

Interventions

Left atrial ablation using cryoballoon to achieve pulmonary vein isolation

Cryoballoon ablation

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • A minimum of at least two separate AF episodes recorded within the last 12 months, either on 12-lead rest ECG or on ambulatory ECG recordings (at least 5 minutes of AF on Holter recordings will be required),
  • LVEF \<40% on sinus rhythm,
  • symptoms consistent with heart failure (New York Heart Association II or higher) despite rate control treatment,
  • age \>21 years old.

You may not qualify if:

  • previous left atrial ablation,
  • left atrial diameter \>28 mm/m2 BSA on TTE (parasternal long axis view),
  • strong clinical suspicion that reduced LVEF is primarily due to tachycardiomyopathy,
  • pre-existing device (ICD or CRT) without AF detection algorithms and/or (for CRT devices) diagnostics of effective biventricular pacing,
  • known primary electrical heart disease (e.g. Brugada syndrome),
  • presence of thrombus in a heart chamber,
  • presence of prosthetic valve at any position,
  • moderate/severe valvular heart disease,
  • active infectious disease or malignancy,
  • moderate or severe hepatic impairment (Child-Pugh class B or C),
  • severe renal failure (estimated glomerular filtration rate \<20 ml/min/1.73 m2),
  • inability or unwillingness to adhere to standard treatment or to provide consent.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Athens General Hospital "G. Gennimatas"

Athens, 11527, Greece

RECRUITING

MeSH Terms

Conditions

Atrial FibrillationHeart Failure, Systolic

Condition Hierarchy (Ancestors)

Arrhythmias, CardiacHeart DiseasesCardiovascular DiseasesPathologic ProcessesPathological Conditions, Signs and SymptomsHeart Failure

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of Cardiology

Study Record Dates

First Submitted

June 8, 2018

First Posted

June 29, 2018

Study Start

June 1, 2018

Primary Completion

December 31, 2021

Study Completion

June 1, 2022

Last Updated

July 9, 2018

Record last verified: 2018-07

Locations