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Updated: May 23, 2026
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Unexpected Lattice-Tip Catheter Overheating During Pulsed Electric Field Ablation Near Metal Implants
Kazuto Hayasaka1, Predrag Stojadinović1, Petr Peichl1
1Institute for Clinical and Experimental Medicine (IKEM), Department of Cardiology, Prague, Czechia.
Abstract:
The energy dynamics of pulsed electric field (PEF) ablation near metallic cardiac implants during clinical procedures remains poorly understood. We report 3 cases in which focal PEF ablation using a lattice-tip catheter (Sphere-9) was performed adjacent to an Amplatzer septal occluder, an AtriClip, and a Sapien valve. All cases showed unexpected elevations in catheter temperature (up to 61 °C, 68 °C, and 53 °C), without impedance change or excessive bubble formation on intracardiac echocardiography. Careful real-time monitoring of catheter temperature is warranted, and intracardiac echocardiography may provide additional information when performing PEF energy delivery near metallic devices.
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