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RecruitingNCT07883629COBRAUpdated Oct 20, 2026

Comparison of Two Pulse Field Ablation Systems for AF Ablation

An interventional study of Pulse Field Ablation in AF - Atrial Fibrillation, sponsored by Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute). Recruiting at 1 site in United States. Open to participants aged 18 Years to 89 Years. Per ClinicalTrials.gov, last updated 2026-10-20.

Sponsored by Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute) · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Jul 2026; still recruiting 3 months later.
Updated Oct 20, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years to 89 Years
Sex
All
01

Study summary

This study randomizes patients undergoing PFA for A Fib to one of two standard care PFA systems. The patient will have an ICM placed to continuously monitor their heart rhythm. Follow up visits will occur until Month 36, and will include 12-lead ECG, ICM interrogation, AE updates, and QOL surveys.

Read the detailed description

The purpose of this study is to compare the efficacy of de novo catheter ablation for persistent AF with System A versus System B pulse field ablation systems to reduce the incidence of AF/AFl/AT recurrence.

Single center, pilot, parallel group, two-arm, single-blind, randomized clinical trial 120 patients (60 per arm)

Subjects will be randomly assigned to one of two pulse field ablation (PFA) treatment procedures (A and B) that are commonly performed in patients with persistent, symptomatic atrial fibrillation The two procedures are performed the same way but using different cardiac catheters. Both of these procedures are performed routinely in the clinical setting.

A. Ablation of your heart using a System A PFA system through a cardiac catheter B. Ablation of your heart using an System B PFA system inserted through a cardiac catheter To monitor the heart after the ablation, an implantable cardiac monitor (ICM) will be implanted under the skin of the subject's chest during the ablation procedure. The risks associated with the ICM device are movement under the skin, erosion of the skin over the device or tissue trauma, infection at the implantation site, and an allergic reaction to or rejection of the device.

02

Conditions studied

  • AF - Atrial Fibrillation

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Keywords

  • Symptomatic AF
  • Persistent AF
03

In context

Atrial Fibrillation

3,957 studies on the registry are indexed under Atrial Fibrillation; 933 are open to participants now.

This study's planned enrollment of 120 is below the median of 145 across 2,437 interventional studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute) is the lead sponsor of 47 studies on the registry; 18 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 4 (44%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 89 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Symptomatic AF
  • Persistent AF
  • De novo AF ablation
  • Males and Females Age 18 to 89 years of age, inclusive
  • Willing and capable to provide informed consent
  • Able and willing to participate in all examinations and follow-up visits and tests associated with this clinical study

Exclusion criteria

Exclusion Criteria:

  • AF secondary to electrolyte imbalance, thyroid disease, alcohol abuse, or other reversible/non-cardiac causes
  • Contraindication to, or unwillingness to use, systematic anticoagulation
  • Left ventricular ejection fraction LVEF 30% as documented by TTE (within 3 months prior)
  • Left atrial volume index >60 ml/m2
  • LA anteroposterior dimension 5.5 cm
  • Presence of intramural thrombus, tumor or other abnormality that precludes safe catheter introduction or manipulation
  • BMI >35 kg/m2
  • Chronic renal insufficiency of \<15 mL/min/1.73 m2 or any history of renal dialysis, or history of renal transplant
  • Clinically significant systemic infection or sepsis
  • Any of the following within the 3-months prior to enrollment:

    • Myocardial infarction
    • Unstable angina
    • Percutaneous coronary intervention
    • Heart failure hospitalization
    • Stroke or TIA
    • Significant bleeding
    • Pericarditis/effusions
    • Left atrial thrombus
    • Coronary artery bypass grafting/atriotomy within 6 months prior
    • Contraindication for oral anticoagulation
    • Organ or hematologic transplant, or currently being evaluated for an organ transplant Women who are pregnant or breastfeeding
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
120 participants (estimated)

Study arms

  • Active comparator
    PFA System A

    Pulse Field System A through a standard ablation catheter

    Procedure: Pulse Field Ablation

  • Active comparator
    PFA System B

    Pulse Field System A through a standard ablation catheter

    Procedure: Pulse Field Ablation

Interventions

  • ProcedurePulse Field Ablation

    Pulse Field Ablation

06

What researchers measure

Primary outcomes

  1. Number of participants free of AF, AFl, or AT recurrence

    AF/AFl/AT Recurrence

    Time frame: 12 months

Secondary outcomes

  1. Number of participants free of AF, AFl, or AT recurrence

    AF/AFl/AT Recurrence

    Time frame: 36 months

  2. Number of participants free of repeat ablation

    Repeat AF ablation within 12 months of randomization

    Time frame: 12 months

07

Study locations

1 of 1 sites recruiting
  • Allegheny General Hospital
    Pittsburgh, Pennsylvania 15212, United States
    • Heather McDonald, MHA, CCRC · Contact · heather.mcdonald@ahn.org · 412-359-3660
    • Amit Thosani, MD · Principal investigator
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Registered
First appeared on the registry. No changes since
Oct 20, 2026
Show all 1 update
  1. Oct 20, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07883629
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Responsible party
Sponsor
First posted
Oct 20, 2026
Start date
Jul 10, 2026
Primary completion
Aug 30, 2028 (estimated)
Completion
May 30, 2031 (estimated)
Last update
Oct 20, 2026

Study contacts

Amit Thosani, MD
Contact
amit.thosani@ahn.org
412-359-3457
Caitlin Phalunas, Lead CRC
Contact
caitlin.phalunas@ahn.org
412-359-3747
Amit Thosani, MD
principal investigator · Allegheny Health Network

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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