Session I: Basic Science and Fundamentals of Electrophysiology-6153-Retrograde Conduction

Video Transcription

Video Summary

In this video, Dr. John Miller discusses retrograde conduction in electrophysiology. Retrograde conduction refers to the backward propagation of electrical signals from the ventricles to the atria. Dr. Miller explains that retrograde conduction can be present or absent and has important implications for rhythm disturbances. He discusses several learning objectives, including how to determine if retrograde conduction is present or absent and recognizing where the block is occurring in the conduction system. Dr. Miller emphasizes the importance of understanding different patterns of retrograde conduction, such as concentric and eccentric activation, and distinguishing between retrograde AV node conduction and accessory pathway conduction. He also discusses the distinction between hiss-dependent and hiss-independent conduction. Dr. Miller explains that assessing retrograde conduction can be done using tools such as ECG, his bundle recordings, and atrial recordings. He also highlights the importance of knowing where in the conduction system the block occurs and how different conduction structures behave under different conditions. Overall, understanding retrograde conduction is important in electrophysiology practice but is often poorly understood.

Keywords

retrograde conduction

electrophysiology

rhythm disturbances

conduction system

AV node conduction

accessory pathway conduction

ECG

block occurrence