(FIT)-Module 2 Workshop 2: Entrainment and SVT Maneuvers-Stevenson Case 2 Answer

Video Transcription

Video Summary

The transcript explains the rationale for selecting site A as the correct outer loop site near the exit in a reentry circuit. It describes a ventricular tachycardia (VT) activation sequence with a double loop pattern, characterized by earliest and latest activations meeting, typical of a reentry site. The local activation time spans approximately 560 milliseconds, consistent with the tachycardia cycle length. The QRS morphology changes slightly with pacing, indicating fusion and stability. The site allows wavefront propagation away from the pacing site, affirming site A as an outer loop near the reentry circuit's exit.

Keywords

ventricular tachycardia

reentry circuit

outer loop site

activation sequence

QRS morphology