Any tachycardic rhythm with a left or right bundle branch block that is NOT ventricular tachycardia is considered "supraventricular tachycardia with aberrancy". This would even include sinus ...

and junctional ectopic tachycardia. [15] Supraventricular arrhythmias may occur in the pre- and post-MI setting. Causes of SVT include: irritation of atrial myocardium as a result of pericarditis ...

3. Premature supraventricular beat with aberrancy (left bundle branch block pattern). Multifocal atrial tachycardia (MAT) occurs when multiple areas (ectopic foci) within the atrium generate ...