A rate-dependent LBBB can occur at times of ... is helpful to make this distinction. The ECG strip below shows normal sinus rhythm, then atrial fibrillation with a rapid ventricular response ...

A STEMI is generally defined as an Electrocardiogram (EKG) with ST elevation of greater than 1 mm in 2 or more contiguous leads. It has also been defined as a "new" Left Bundle Branch Block (LBBB ...

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 left untreated, Afib can lead to stroke, heart failure and premature cardiac death. But fortunately, Afib is treatable and, in some cases, preventable.

In Friday’s Health headlines, February is heart month, and we’re talking about AFib, portable EKG devices, and how stress this season can be hard on the heart. Yale Medicine electrocardiologist Dr.