(FIT)-Module 2 Special Workshop: 12 Lead ECG for PVC and VT Localization-Stevenson Case 2 Answer

Video Transcription

Video Summary

The answer is E, the inferoapical left ventricle. The patient exhibits sinus rhythm with ventricular bigeminy. The PVC QRS morphology resembles a right bundle branch block in V1, indicating left ventricle exit. The frontal plane axis is directed superiorly with QS complexes in inferior leads, suggesting an origin in the inferior left ventricle. Dominant S waves in V3 and V4 suggest a vector moving away from these leads, indicating early activation near the apex, confirming the inferoapical left ventricle as the source.

Keywords

inferoapical left ventricle

ventricular bigeminy

PVC QRS morphology

right bundle branch block

inferior left ventricle origin