(FIT)-Module 2 Special Workshop: 12 Lead ECG for PVC and VT Localization-Stevenson Case 4 Answer

Video Transcription

Video Summary

The explanation highlights the origin of premature ventricular contractions (PVCs) from the inferior left ventricular papillary muscle. These PVCs display a right bundle branch block pattern, indicating a left ventricular origin with distinctive tall S waves in leads 2, 3, and AVF, suggesting they arise from the left ventricle's floor. The papillary muscles are complex structures with multiple heads, and PVCs can originate at various points, often at the tip, causing variations in the frontal plane axis. This complexity affects the EKG readings, particularly noted in V1 with a small Q wave.

Keywords

premature ventricular contractions

inferior left ventricular papillary muscle

right bundle branch block pattern

EKG variations

frontal plane axis