(FIT)-Module 2 Lectures: Invasive Diagnosis and Treatment Part 1-Physiology, Mapping and Catheter Ablation of Accessory Pathways (Miles)

Video Transcription

Video Summary

In this lecture, Professor Bill Miles from the University of Florida discusses the catheter ablation of various types of accessory pathways, focusing on their identification, mapping, and indications for ablation. Accessory pathways, including the common periannular AV connections, can conduct either bidirectionally or in a single direction, complicating supraventricular tachycardia (SVT) management. Key types discussed include atriofascicular, nodofascicular, and the rare appendage-ventricular connections. The lecture emphasizes the importance of proper identification and differentiation of these pathways to avoid complications like AV block. Successful ablation relies on accurate ECG localization and intracardiac mapping to pinpoint the pathway's insertion site. The lecture highlights the use of techniques such as anterograde and retrograde mapping, as well as electroanatomic mapping to ensure precise targeting during ablation. Factors like heart anatomy and catheter stability during energy delivery are critical for effective ablation. It concludes by stressing the importance of understanding the various accessory pathway variants to manage and treat patients effectively, minimizing risks and complications during ablation.

Keywords

catheter ablation

accessory pathways

supraventricular tachycardia

atrioventricular connections

atriofascicular pathway

nodofascicular pathway

electroanatomic mapping

intracardiac mapping

AV block prevention