Initial multicenter experience with a new high-density coloring module: impact for complex atrial arrhythmias...

Area of Science:

• Cardiology
• Electrophysiology
• Medical Imaging

Background:

• Accurate assessment of activation maps is crucial for high-density automated mapping of complex atrial tachycardias (ATs).
• A novel local activation display module (HD coloring) offers enhanced map resolution and propagation visualization.
• This study evaluates the diagnostic accuracy of the HD coloring module against standard algorithms.

Purpose of the Study:

• To compare the diagnostic accuracy of a new HD coloring local activation display module with standard activation mapping for complex ATs.
• To assess the impact of the HD coloring module on the speed and confidence of diagnosis and ablation strategy identification.

Main Methods:

• High-density electrophysiological maps from 10 ATs were acquired using a multipolar catheter.
• Maps were displayed using either standard activation or the new HD coloring module.
• Six expert operators retrospectively analyzed the maps to determine tachycardia mechanism, ablation target, and interpretation difficulty.

Main Results:

• HD coloring led to a significantly higher correct diagnosis rate (93% vs. 63%) and reduced diagnosis time (1.9 min vs. 3.9 min).
• Operator confidence for ablation without further maneuvers increased (87% vs. 53%) with HD coloring.
• Ablation strategy was more accurately identified (97% vs. 67%) using the HD coloring module.

Conclusions:

• Activation mapping utilizing the HD coloring module enables more accurate and reliable interpretation of complex AT mechanisms.
• The HD coloring module facilitates faster and more confident diagnosis and ablation planning for ATs.
• This advanced visualization tool represents a significant improvement over standard activation maps for complex atrial tachycardia management.