Comparative Evaluation of Optrell and Octaray Mapping Catheters for Conduction Block Confirmation and Voltage Assessment During Atrial Ablation

Summary

This prospective, single-center observational study aims to compare the clinical performance, workflow efficiency, and electrophysiological metrics of two commercially available, high-density multielectrode mapping catheters (Octaray and Optrell) in patients undergoing catheter ablation for complex atrial arrhythmias. The primary focus is to determine if the real-time vector propagation capabilities of the Optrell catheter combined with V8 software can accurately confirm conduction block across linear ablation lesions without the need for full-chamber activation remapping, which is the current standard of care. A secondary focus will pair-compare the bipolar voltage amplitude distributions recorded by both catheters, given their differing electrode sizes and spacing.

Eligibility

Inclusion Criteria:

* • Age ≥18 years.
* • Documented persistent atrial fibrillation and/or atrial flutter.
* • Undergoing a clinically indicated first-time (de novo) or redo catheter ablation where linear ablation lesion sets (e.g., posterior wall, roof line, lateral mitral line, CTI) are planned or anticipated.
* • Ability to provide written informed consent.

Exclusion Criteria:

* • Paroxysmal or persistent AF where only standard PVI is planned.
* • Mechanical mitral valve.
* • Presence of intracardiac thrombus or contraindication to systemic anticoagulation.
* • Any medical condition or anatomical contraindication that, in the investigator's judgment, precludes safe participation.
* • Pregnant women.

Conditions2

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