QRS morphology
(RBBB-like pattern)
V1 - R or qR
V6 - rS
V1 - rsR'
V6 - R(slurredS)
QRS morphology
(LBBB-like pattern)
V1 or V2 - Broad R wave (>40msec)
V6 - Any Q or QS
V1 - rS or QS
V6 - qRs
Rhythm diagnosis in regular wide complex tachycardia
Assume any wide-complex tachycardia is ventricular tachycardia until proven otherwise 
ECG Stampede
Regular
STEMI mimics
Monomorphic ventricular tachycardia
ECGs by Diagnosis
PSVT with aberrant conduction: