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Bifascicular Block: Right Bundle Branch Block and Left Anterior Fascicular Block (RBBB/LAFB). Sinus tach… | Bundle branch block, Sinus tachycardia, Heart electrical
![74 year old male with chest discomfort, right bundle branch block, and ST-segment elevation | EMS 12 Lead 74 year old male with chest discomfort, right bundle branch block, and ST-segment elevation | EMS 12 Lead](http://www.ems12lead.com/wp-content/uploads/sites/42/2014/02/ECG18-21.jpg)
74 year old male with chest discomfort, right bundle branch block, and ST-segment elevation | EMS 12 Lead
![Bundle Branch Block and Fascicular Block - Cardiovascular Disorders - Merck Manuals Professional Edition Bundle Branch Block and Fascicular Block - Cardiovascular Disorders - Merck Manuals Professional Edition](https://www.merckmanuals.com/-/media/manual/professional/images/cvs_hearts_electrical_pathway.gif?thn=0&sc_lang=en)