(FIT)-Module 3 Workshop 4: SVT and VT Invasive and Non-Invasive Correlation-Marchlinski Case 4 Answer

Video Transcription

Video Summary

The provided transcript reviews an analysis of ventricular tachycardia (VT) termination through ablation. It explains that pacing at the site known as 15-1 demonstrates an effective termination of VT due to a non-propagated stimulus, consistent with an isthmus site, which is not an entrance site. The pacing captures the QRS complexes, aligning with the pacing rate. The transcript also clarifies that VT termination is not due to bundle branch reentry but rather substrate-based VT, evident by the recorded electrogram intervals and QRS morphology, contradicting incorrect interpretations of the tracing related to automatic mechanisms or alternative pathways.

Keywords

ventricular tachycardia

VT termination

ablation

isthmus site

substrate-based VT