QRS duration of > 120 milliseconds rsR' "bunny ear" pattern in precordial leads ... However, unlike in the presence of a left bundle branch block, myocardial ischemia and infarction can easily ...

Below is an ECG displaying a right bundle branch block with an anterior ST ... Lastly, VT itself can sometimes have a RBBB pattern if it arises from the left ventricle. If tachycardia is present ...