Conduction abnormalities
| Brugada syndrome | ST coved elevation septal leads | Partial RBBB morphology | History of sudden cardiac death in family especially in Asia |
| Bundle Branch Block (left or right) | ST/T changes opposite polarity to QRS vector (‘discordance) | QRS widening | Any abnormality of ventricular conduction results in abnormal repolarisation pattern |
| Paced rhythm | Similar to Bundle Branch Block | Pacing spikes seen QRS widening |
Check patient for pacemaker |
| Digoxin | Down-sloping ST in lateral leads | Atrial fibrillation | Review medications |