Initial experience in ablation of typical atrial flutter using a novel three-dimensional catheter tracking system

Area of Science:

• Electrophysiology
• Medical Technology
• Cardiology

Background:

• Three-dimensional (3D) mapping is standard in interventional electrophysiology (EP).
• A novel sensor-based 3D catheter tracking system, MediGuide™ Technology (MG), integrates non-fluoroscopic navigation with pre-recorded 2D fluoroscopy.

Purpose of the Study:

• To evaluate the safety and feasibility of MG technology for typical atrial flutter ablation.
• To assess procedural effectiveness, duration, and fluoroscopy time using MG technology.

Main Methods:

• Ten patients underwent typical atrial flutter ablation using MG technology.
• Two sensor-equipped EP catheters were used for coronary sinus cannulation and cavo-tricuspidal isthmus (CTI) reconstruction.
• Ablation was performed with a conventional catheter; MG catheters were tracked non-fluoroscopically.

Main Results:

• MG technology enabled non-fluoroscopic tracking of catheters in all 10 patients.
• Successful anatomical CTI reconstruction and documented complete isthmus block were achieved.
• Procedure duration was comparable to conventional methods (55 ± 8 min), with significantly reduced fluoroscopy time (2.5 ± 2 min).
• No adverse events were reported.

Conclusions:

• MG technology provides a stable system for excellent 3D catheter orientation in EP.
• The system facilitates successful atrial flutter ablation with reduced fluoroscopy times.
• Further advancements are expected with sensor-equipped ablation catheters.