(FIT)-Module 2 Workshop 3: SVT Mechanisms and Maneuvers-Workshop 3: SVT Mechanisms and Maneuvers (Michaud)

Video Transcription

Video Summary

In the presentation by Greg Michaud, various electrophysiology (EP) cases are analyzed to identify atrial and conduction pathologies. The first case discusses determining the source of atrial activation using pacing from the His bundle catheter, focusing on retrograde conduction over accessory pathways. Different strategies for capturing the His bundle vs. local ventricular capture are explored, highlighting their diagnostic value. <br /><br />The second case involves managing supraventricular tachycardia (SVT) by examining ventricular pacing influences, where decremental accessory pathway identification is crucial to avoid misdiagnosis and inappropriate ablation.<br /><br />In subsequent analysis, Michaud examines atrial flutter post-pulmonary vein isolation (PVI) and suggests considering alternative mechanisms when a singular gap exists. Finally, a case on atrial tachycardia illustrates differentiating sites for ablation, emphasizing careful electrogram readings and mapping across atrial planes to avoid injuring adjacent structures like the AV node and ensuring successful elimination of tachycardia.

Keywords

electrophysiology

His bundle pacing

accessory pathways

supraventricular tachycardia

pulmonary vein isolation

atrial tachycardia ablation