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NCT Number: NCT06935591

Artificial Intelligence Mapping and Ablation of Non-Pulmonary Vein Electrical Drivers of AF Study

The goal of this clinical trial is to compare the use of the Vektor Computational ECG Mapping System (vMap®) with pulmonary vein isolation (PVI), to using PVI alone, to treat Atrial Fibrillation (AF) in adults.

Participants will have a 50/50 or 1 out of 2 chance of being placed in the treatment or control arm. The control arm of the study involves PVI alone for ablation procedure(s). The treatment arm involves the use of vMap mapping in addition to PVI to plan ablation procedure(s).

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Key information

Age range

22 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

German Heart Center, Munich, Germany

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About this study

This is a post-market, prospective, multi-center, two-arm randomized-controlled clinical study. Subjects will be randomized in a 1:1 ratio into two arms: a treatment arm (use of vMap® system in addition to pulmonary vein isolation [vMap®+PVI]) and a control arm (PVI alone). The study is designed to compare clinical outcomes following use of an FDA-cleared/commercially available forward-solution computational 12-lead ECG mapping system (vMap®) for identifying/mapping for subjects who are indicated to undergo ablation procedures for persistent and recurrent AF in accordance with standard of care practices.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subjects diagnosed with persistent (not longstanding) AF or recurrent AF, as defined for this study.
  • Subject has a recent 12-lead electrogram data of AF (including baseline, pacing and clinical arrhythmia) recorded on the electrogram recording system (e.g., Bard, Boston-Scientific, St. Paul, MN or Prucka, GE Medical) or standalone ECG system (e.g., GE Muse, Minnesota, or CardioCard (Nasiff, NY) in digitized format.
  • The following data elements can be abstracted from the patient medical records or confirmed and documented prior to the scheduled procedure (to be inputted in vMap®):
  • Atrial fibrillation type
  • Atrial characteristics: geometry (normal, left and/or right atrial enlargement), Utah classification, prior ablation modality (e.g., radiofrequency, cryoablation, pulsed field ablation), prior ablation lesion location(s).
  • Subject is ≥ 22 years of age at time of enrollment/consent.
  • Subject is indicated to undergo an ablation procedure at the medical discretion of the Investigator.
  • Subject is able and willing to comply with the protocol requirements, has been informed of the nature of the study,

Exclusion criteria

  • Subjects with arrhythmias other than persistent or recurring AF as defined for this study, including long-standing persistent atrial fibrillation (persistent AF lasting ≥ 1 year from diagnosis).
  • Inability to obtain ECG prior to or during the clinical ablation procedure; or unacceptable ECG data quality such as low ECG signal-to-noise ratio or lack of ECG data in one or more leads.
  • Subjects who are participating in another clinical investigation with an investigational drug or device at the time of enrollment or planned participation at any time during this clinical investigation.
  • Subjects who have a known or suspected medical condition that, in the opinion of the Investigator, may put the subject at risk for participation in this clinical investigation.
  • Subjects who are pregnant as confirmed by the institution's standard pre-surgery practice.
  • Subject has had prior PVI and all four pulmonary veins are confirmed to be isolated based on voltage readings during the study index procedure.

Treatment and study plan

pulmonary vein isolation

Procedure

Subjects will receive treatment for Atrial Fibrillation with Pulmonary Vein Isolation per standard of care.

vMap® + Pulmonary Vein Isolation

Device

Subjects will receive treatment for Atrial Fibrillation with the use of the vMap® system and Pulmonary Vein Isolation.

Primary outcomes

  1. Freedom from AF

    Time frame: 12 months post procedure

    The achievement of freedom from AF for subjects on or off antiarrhythmic drug (AAD) therapy at 12 months.

Secondary outcomes

  1. Freedom from AF and AT

    Time frame: 12 months post procedure

    Freedom from both AF and AT for subjects on and off antiarrhythmic drug (AAD) therapy at 12 months.

  2. Total Procedure Time

    Time frame: Interventional Procedure

    Defined as the time from completing intravascular access (successful placement of all vascular sheaths) to initiating hemostasis (time at which the first vascular sheath is removed from the subject).

  3. Total vMap® Mapping Time

    Time frame: Interventional Procedure

    Defined as time from entering the ECG and patient characteristics into the vMap® and ending with display of the 3-dimensional mapping result, prior to delivery of the first ablation.

  4. AF Burden

    Time frame: 12 months post procedure

    AF burden as a proportion of time before versus after the ablation procedure, excluding the 'blanking period'.

  5. Spontaneous AF Termination

    Time frame: Interventional Procedure

    Proportion of subjects whose AF terminated spontaneously upon and after the first ablation lesion and before achieving hemostasis without cardioversion.

  6. Total Fluoroscopy Dose

    Time frame: Interventional Procedure

    Defined as the cumulative dose-area product (DAP) for the procedure.

Other outcomes

  1. Total Fluorscopy Time

    Time frame: 1Interventional Procedure

    Defined as the total time of fluoroscopy during procedure

Sponsors and collaborators

Lead sponsor

Vektor Medical

Industry

Collaborators

  • Veranex
  • Veranex Switzerland SA

Registry information

Acronym: IMPRoVED-AF

Important dates

Study start
2025
Primary completion
2027
Study completion
2027
First posted
Apr 20, 2025
Registry last updated
Mar 16, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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