(FIT)-Module 3 Workshop 5: Invasive and Non-Invasive Correlation-Marchlinski Case 7 Answer

Video Transcription

Video Summary

The video transcript discusses diagnosing a tachycardia mechanism, focusing on bundle branch reentry. Key indicators include pacing from the right ventricle during tachycardia, consistent QRS fusion during pacing, and the VHA response during RV entrainment, which correlate with bundle branch reentry rather than AV accessory pathway-mediated tachycardia. The evidence presented includes the post-pacing interval, QRS fusion, and activation sequences, all pointing towards a reentrant mechanism rather than focal arrhythmia or typical AV nodal reentry. The transcript underscores the importance of specific pacing responses as indicators of the reentrant arrhythmia.

Keywords

tachycardia mechanism

bundle branch reentry

right ventricle pacing

QRS fusion

post-pacing interval