Left bundle branch block (LBBB) is a type heart block. It results from a problem with the electrical conduction system that enables the heart to beat. It may cause no symptoms, but an ...

In 1994, The Fibrinolytic Collaborative Group demonstrated that fibrinolytics reduced mortality in STEMIs. [7] Patients with bundle branch block patterns and clinical suspicion for an MI were included ...

This ECG is challenging. The rhythm starts as normal sinus rhythm with a right bundle branch block, then a wide-complex tachycardia develops in a left bundle branch block pattern. The important thing ...

Note: ECG = electrocardiography, LAD = left anterior descending artery, STEMI = ST-segment elevation myocardial infarction. These cases raise several questions: Are these true syndromes or simply ECG ...