(FIT)-Module 3 Workshop 4: SVT and VT Invasive and Non-Invasive Correlation-Miles Case 4 Answer

Video Transcription

Video Summary

The video explains that an unsuccessful ablation attempt indicates decremental conduction within the slow pathway and confirms AV node reentry. An atrial extrastimulus introduced during the procedure resulted in a delay indicative of interference with retrograde activation, confirming the need for further ablation. This suggests AV node reentrant tachycardia rather than non-reentrant or atrial tachycardia, as indicated by a fixed VA interval. Early introduction of a premature atrial complex can extinguish tachycardia by blocking the slow AV nodal pathway, demonstrating the need for additional ablation to achieve success.

Keywords

AV node reentry

decremental conduction

slow pathway ablation

atrial extrastimulus

AV node reentrant tachycardia