(FIT)-Module 3 Workshop 4: SVT and VT Invasive and Non-Invasive Correlation-Marchlinski Case 6 Answer

Video Transcription

Video Summary

The video discusses ventricular fibrillation (VF) triggers from the right ventricular (RV) moderator band, identifying key electrocardiogram (ECG) features. A ventricular premature depolarization (VPD) with a left bundle branch block pattern, a superior leftward axis, and positivity in specific leads is noted. This morphology is consistent with VF triggers originating from the RV moderator band and the papillary muscle. These features are significant in cases without structural heart disease. The mean QRS duration reflects the moderator band's involvement, demonstrating common patterns in non-sustained ventricular tachycardia (VT) triggers and guiding mapping/ablation procedures in an electrophysiology lab.

Keywords

ventricular fibrillation

right ventricular moderator band

ventricular premature depolarization

left bundle branch block

electrophysiology mapping