(FIT)-Module 3 Workshop 4: SVT and VT Invasive and Non-Invasive Correlation-Miles Case 6 Question

Video Transcription

Video Summary

The video discusses the potential effects of adenosine on an epicardial post-receptal accessory pathway from the middle cardiac vein. The main focus is on understanding why the QRS complex widens during the procedure when the atria are paced at a constant cycle length of 800 milliseconds. The possible explanations include adenosine's influence on AV node conduction, dormant conduction over the accessory pathway, exposure of a bundle branch block, or accelerated automaticity in the pathway. The presenter invites viewers to consider each theory alongside the presented slide showing the same setup with adenosine administration.

Keywords

adenosine effects

epicardial accessory pathway

middle cardiac vein

QRS complex widening

AV node conduction