(FIT)-Module 4 Workshop 6: Electrocardiographic and Electrophysiological Correlations-Asirvatham Case 4 Answer

Video Transcription

Video Summary

This transcript describes the identification of retrograde conduction through an accessory pathway, distinguishing it from the AV node. It emphasizes the significance of observing the activation sequence and VA interval during extra stimulation testing and parahisian pacing. If the activation sequence remains unchanged despite varying conditions, it indicates an accessory pathway, not involving the AV node. Notably, changes in sequence suggest fusion, complicating mapping efforts. Understanding these distinctions is crucial for accurate diagnosis and treatment planning, particularly when mapping atrial activation in cases like orthodromic reciprocating tachycardia.

Keywords

retrograde conduction

accessory pathway

AV node

activation sequence

orthodromic reciprocating tachycardia