1. Durable LAA isolation combining pulsed field ablation and radiofrequency linear lesions in a patient with a therapy refractory left atrial appendage tachycardia.
- Author
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Urbani, Andrea, Tohoku, Shota, Bordignon, Stefano, Schaack, David, Hirokami, Jun, Urbanek, Lukas, Kheir, Joseph Antoine, Schmidt, Boris, and Chun, K. R. Julian
- Abstract
Background: Treating atrial tachycardia (AT) originating from left atrial appendage (LAA) needs sometimes electrical isolation of LAA. We report a case of AT originating from LAA successfully treated with electrical isolation using the novel lattice-tip pulsed-field/radiofrequency ablation (PFA/RFA) catheter. Case summary: A 55-year-old female patient with a history of three focal ablative attempts for a highly symptomatic AT originating from the LAA in different centers was admitted to our department for the recurrence of the clinical tachycardia. Electrical isolation of the LAA (LAAEI) was successfully performed with a lattice-tip PFA/RFA ablation catheter. Six weeks after the procedure, an invasive re-mapping study indicated a durable electrical LAA isolation; therefore, a 24-mm-sized LAA occlusion device (WATCHMAN FLX device, Boston Scientific, Plymouth, MN, USA) was implanted. Discussion: In this case, we successfully treated an atrial tachycardia originating from LAA using the recently approved lattice-tip PFA/RFA ablation catheter. The combination between two energy sources during the same procedure could potentially improve lesions transmurality offering a new promising solution for the treatment of complex atrial tachycardias. Left atrial appendage electrical isolation using the novel lattice-tip PFA/RFA catheter. Purple signals were recorded using a spiral mapping catheter positioned in LAA. White signals were recorded from the 9-electrodes-Lattice-tip ablation catheter. Green signals are recorded from a deflectable multipolar catheter positioned in coronary sinus. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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