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

Special Workshop: 12 Lead ECG for PVC and VT Localization (Miller)

Video Transcription

Video Summary

In this video, Dr. John Miller and Dr. Bill Stevenson discuss the localization of ventricular ectopy on an ECG. They explain that knowing the source of ventricular ectopy is important for pre-procedural planning, counseling patients, and determining the prognosis. The ECG vectors can give a general indication of where the source of ectopy is located. The bundle branch block pattern in V1 can indicate if the source is from the left or right ventricle. The frontal plane axis indicates if the impulse is coming from the top or bottom of the heart. Lead 1 and AVL help determine left versus right direction of the ectopy. The precordial R-wave progression pattern in the horizontal plane can give an indication of basal versus apical location. Several algorithms have been proposed to help distinguish between left and right ventricular sources of PVCs, although none are foolproof. The video also discusses special cases and limitations of using the ECG for localization.

Keywords

ventricular ectopy

ECG localization

bundle branch block

frontal plane axis

R-wave progression

PVC algorithms