(FIT)-Module 1, Workshop 1: Electrocardiographic/Electrophysiologic Correlation-Miller Case 3 Answer

Video Transcription

Video Summary

The analysis reveals a lack of retrograde conduction, indicating a block in the His-Purkinje system. The ventricular pacing captures all six complexes, while independent sinus P waves suggest no influence of ventricular pacing on atrial activation. The consistent AH interval indicates no retrograde activation through the His-Purkinje system, as it blocks in the AV node without reaching it. This situation reflects a very sick His-Purkinje system with normal and unperturbed AH intervals despite ventricular pacing. This unusual condition reveals that the retrograde conduction block occurs in the His-Purkinje system.

Keywords

retrograde conduction block

His-Purkinje system

ventricular pacing

AH interval

AV node