Bundle branch block (BBB) is a condition that affects the electrical conduction system of the heart, leading to delays in the heart's electrical signals. This can be particularly significant in ...

This ECG shows atrial fibrillation with an uncontrolled ventricular rate. There are two QRS complexes that become wide in a right bundle branch block pattern. This can occur at fast heart rates ...

If the QRS complex is widened and downwardly deflected in lead V1, a left bundle branch block is present ... shows normal sinus rhythm, then atrial fibrillation with a rapid ventricular response ...

The use of pacing therapy for sinus node dysfunction, AV block, and bundle branch block are ... if the patient develops rapid atrial rates (atrial fibrillation, atrial flutter), sensed atrial ...