- QRS width >120 milliseconds
|
- Shift in QRS axis, particularly to a "northwest" axis (between –90 and –180 degrees)
|
- AV dissociation (including the presence of fusion complexes and/or capture beats)
|
- Negative concordance in leads V1 to V6
|
- RS >100 milliseconds in any of leads V1 to V6
|
|
- VT with RBBB-like morphology in V1: R/S <1 in V6
|
- VT with LBBB-like morphology in V1: Any Q wave in V6
|