Three dimensional ultra-high-density electro-anatomical cardiac mapping in horses: methodology

Area of Science:

• Veterinary Cardiology
• Electrophysiology
• Medical Imaging

Background:

• Ultra-high-density cardiac mapping provides precise characterization of atrial and ventricular electrophysiology.
• Accurate assessment of activation timing is crucial for understanding cardiac function.

Purpose of the Study:

• To detail the technique for magnetic electro-anatomical mapping in equine hearts.
• To assess the feasibility of this advanced mapping method in horses.

Main Methods:

• An 8.5F catheter with a 64-electrode mini-basket was utilized for mapping.
• The system automatically acquired electrograms and catheter location data.
• Electro-anatomical maps were generated from four horses under general anesthesia.

Main Results:

• All cardiac chambers were accessible for mapping.
• Feasible mapping was achieved in all four horses, with optimization reducing manual beat correction to 0.4%.
• Access to the left atrium necessitated a deflectable sheath.

Conclusions:

• Ultra-high-density 3D electro-anatomical mapping is viable in adult horses.
• This technique shows promise for equine electrophysiological research.
• It is a valuable tool for characterizing complex arrhythmias in horses.