1. Normal sinus rhythm 2. SVT with aberrancy and a rate-dependent left bundle branch block This ECG has a narrow QRS complex initally, then a fast heart rate, regular rhythm and no identifiable P ...

1. Normal sinus rhythm 2. SVT with aberrancy and a rate-dependent left bundle branch block This ECG has a narrow QRS complex initally, then a fast heart rate, regular rhythm and no identifiable P ...

Supraventricular tachycardia (SVT) is a heart rate that is faster than typical and begins in the atria. SVT with aberrancy is SVT with abnormal conduction, such as a bundle branch block.

Wide complex tachycardias are more likely to be ventricular tachycardia (VT) than supraventricular tachycardia with aberrancy, and in this case, Brugada's criteria favor VT (no RS complex in any ...